Tests diagnostiques TDAH et TSA : outils scientifiques | DYNSEO<\/title><br \/>\n <meta name=\"description\" content=\"CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 d\u00e9couvrez tous les tests de diagnostic du TDAH et de l'autisme. 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.key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<section class=\"article-hero\">\n<div class=\"article-hero-inner\">\n<div class=\"article-breadcrumb\">\n Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests\n <\/div>\n<div class=\"article-category\">\n \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series\n <\/div>\n<h1>ADHD and ASD Diagnostic Tests: <span class=\"hl\">scientific tools<\/span><\/h1>\n<div class=\"article-meta\">\n <span>\ud83d\udcc5 Published in April 2026<\/span><br \/>\n <span>\u23f1\ufe0f 15 min read<\/span><br \/>\n <span>\ud83d\udc65 Parents, professionals, concerned adults<\/span><br \/>\n <span>\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n<\/p><\/div>\n<div class=\"article-hero-curve\"><\/div>\n<\/section>\n<div class=\"article-body\">\n<div class=\"container\">\n<div class=\"intro-block\">\n CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 the diagnostic tests for ADHD and autism are numerous and specific. An accurate diagnosis can transform a life, but it is only possible with the right scientific tools. This comprehensive guide explains the purpose of each diagnostic instrument, the cost of an assessment, their strengths and limitations, and how to start with the free DYNSEO tests before a specialized consultation. Understanding these tools helps parents and concerned adults better navigate the often long and costly diagnostic journey.\n <\/div>\n<div class=\"stats-grid\">\n<div class=\"stat-card\">\n <span class=\"number\">FREE<\/span><br \/>\n <span class=\"label\">The DYNSEO screening tests, available immediately online<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">400\u2013800\u20ac<\/span><br \/>\n <span class=\"label\">Cost of a complete ADHD neuropsychological assessment in practice<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">500\u20131500\u20ac<\/span><br \/>\n <span class=\"label\">Cost of a complete ASD assessment (ADOS-2 + ADI-R + cognitive evaluation)<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">15+<\/span><br \/>\n <span class=\"label\">Standardized diagnostic tests available for ADHD and ASD<\/span>\n <\/div>\n<\/p><\/div>\n<h2>1. The scientific foundations of neurodevelopmental diagnosis<\/h2>\n<pee>The diagnosis of ADHD and autism spectrum disorders (ASD) is based on a rigorous scientific approach that combines several dimensions of assessment. Contrary to popular belief, it is not a simple clinical observation or professional intuition, but a standardized process using internationally validated instruments.<\/pee>\n<pee>The modern diagnostic approach relies on the principle of data convergence: no single test can establish a diagnosis. It is the consistency between different types of measures – behavioral questionnaires, objective cognitive tests, structured clinical observations, and developmental history – that allows for a reliable diagnosis.<\/pee>\n<pee>This multi-instrumental approach meets a crucial precision requirement: the consequences of an erroneous diagnosis, whether a false positive or a false negative, can be severe for the individual and their family. Over-diagnosis can lead to inappropriate treatments and stigmatization, while under-diagnosis deprives the person of necessary support.<\/pee>\n<div class=\"conseil-card\">\n<h4>Why is standardization essential?<\/h4>\n<pee>Standardized tests allow for comparing an individual’s performance to that of a representative sample of their age group. Without this normative reference, it is impossible to determine whether an observed difficulty is a normal variation in development or a disorder requiring specialized support.<\/pee>\n <\/div>\n<h2>2. Diagnostic tests for ADHD: a multidimensional approach<\/h2>\n<pee>Attention Deficit Hyperactivity Disorder (ADHD) is characterized by persistent difficulties in attention, impulsivity, and sometimes motor hyperactivity. Its diagnosis requires an evaluation that covers three complementary areas: reported behavioral symptoms, objective cognitive performance, and functional analysis of difficulties.<\/pee>\n<pee>The complexity of ADHD lies in its great variability of expression. Some individuals primarily present attentional difficulties (inattentive presentation), others hyperactivity-impulsivity (hyperactive-impulsive presentation), and still others a combination of both (mixed presentation). This diversity necessitates the use of multiple and complementary diagnostic tools.<\/pee>\n<h3>Standardized behavioral questionnaires<\/h3>\n<pee>Behavioral assessment is the first pillar of ADHD diagnosis. It relies on standardized questionnaires that quantify the symptoms observed in different life contexts.<\/pee>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n<div class=\"expert-box-title\">ASRS v1.1 – Adult ADHD Self-Report Scale<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Technical characteristics<\/div>\n<pee><strong>Duration:<\/strong> 5-8 minutes | <strong>Items:<\/strong> 6 key questions | <strong>Population:<\/strong> Adults 18+ years<\/pee>\n <pee>The ASRS was developed by the World Health Organization in collaboration with Harvard University. It is the most widely used adult ADHD screening questionnaire in the world, translated into 35 languages and validated on over 15,000 participants.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Assessed areas<\/div>\n<pee>The questionnaire covers the 18 symptoms of the DSM-5 grouped into two dimensions: inattention (9 items) and hyperactivity-impulsivity (9 items). The 6 questions of the short version correspond to the most predictive symptoms of the diagnosis according to statistical analyses.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Score interpretation<\/div>\n<pee>A score of 4\/6 or more in the “often\/very often” range indicates a high probability of ADHD (sensitivity 68%, specificity 99%). This threshold justifies a specialized consultation for diagnostic confirmation.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n<div class=\"expert-box-title\">Conners Scales – Version 3<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Available versions<\/div>\n<pee><strong>Conners-3 Parents:<\/strong> 27 to 110 items depending on the version | <strong>Conners-3 Teachers:<\/strong> 39 to 59 items | <strong>Conners-3 Self-Report:<\/strong> from 8 years old, 28 to 99 items<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd04 Multi-informant approach<\/div>\n<pee>The strength of the Conners scales lies in their triangular approach. Symptoms reported by parents, teachers, and the child themselves are compared to identify convergences and divergences. This method allows for distinguishing situational difficulties from persistent disorders.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Calculated indices<\/div>\n<pee>The scales provide standardized T scores (mean 50, standard deviation 10) for each dimension: inattention, hyperactivity-impulsivity, learning problems, executive function, aggression, peer relationships. A T score \u2265 65 is considered clinically significant.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Objective cognitive tests for ADHD<\/h3>\n<pee>Beyond behavioral symptoms, ADHD is characterized by measurable alterations in cognitive functions, particularly attentional and executive. Objective cognitive tests allow for precise and reproducible quantification of these difficulties.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">FREE ACCESS DYNSEO<\/div>\n<pee>DYNSEO offers free equivalents of the main ADHD cognitive tests: <strong>Selective Attention Test<\/strong> (CPT paradigm), <strong>Processing Speed Test<\/strong> and <strong>Concentration Test<\/strong>. These tools allow for an initial objective assessment before medical consultation.<\/pee>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Access the free DYNSEO tests<\/a>\n <\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">REFERENCE COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">CPT – Continuous Performance Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Operating principle<\/div>\n<pee>The CPT measures sustained attention and inhibitory control over 15-20 minutes. The participant must quickly respond to target stimuli (letters, numbers, or specific shapes) while ignoring distractors. This seemingly simple task intensely engages the frontal attentional networks.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Measured variables<\/div>\n<pee><strong>Omissions:<\/strong> missed targets (inattention) | <strong>Commissions:<\/strong> false alarms (impulsivity) | <strong>Mean reaction time:<\/strong> processing speed | <strong>Temporal variability:<\/strong> attentional consistency<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c Scientific validity<\/div>\n<pee>Over 200 studies validate the use of the CPT in ADHD. Meta-analyses show a moderate to strong effect size (d = 0.5 to 1.2) for differentiating ADHD patients from controls, particularly on reaction time variability.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">EXECUTIVE TEST<\/div>\n<div class=\"expert-box-title\">Stroop Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfa8 Experimental paradigm<\/div>\n<pee>The Stroop test assesses cognitive inhibition by creating a conflict between an automatic response (reading) and a controlled response (color naming). For example, the word “RED” written in blue requires saying “blue” while inhibiting the automatic reading “red”.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Interference Effect<\/div>\n<pee>The Stroop effect is calculated by the difference between reaction times in incongruent versus congruent conditions. In ADHD, this effect is typically increased, reflecting a difficulty in frontal executive control.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83e\udde0 Neurobiological Bases<\/div>\n<pee>Neuroimaging shows that the Stroop test specifically activates the anterior cingulate cortex and the dorsolateral prefrontal cortex, two key regions of executive functions often impaired in ADHD.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Comprehensive cognitive assessment: WISC-V and WAIS-IV<\/h3>\n<pee>The Wechsler scales (WISC-V for children, WAIS-IV for adults) are the reference cognitive assessment in neuropsychology. In the context of ADHD, they help identify characteristic cognitive profiles and quantify the functional impact of attentional difficulties.<\/pee>\n<div class=\"key-points\">\n<h4>Typical ADHD cognitive profile in the Wechsler scales<\/h4>\n<ul>\n<li><strong>Verbal Comprehension:<\/strong> often preserved or high (reflects actual intellectual potential)<\/li>\n<li><strong>Perceptual Reasoning:<\/strong> variable depending on subtests and the presence of hyperactivity<\/li>\n<li><strong>Working Memory:<\/strong> frequently weakened (difficulties in mental manipulation)<\/li>\n<li><strong>Processing Speed:<\/strong> often slowed (inefficiency related to inattention)<\/li>\n<li><strong>“Sawtooth” Pattern:<\/strong> significant gaps between indices (> 15 points)<\/li>\n<\/ul><\/div>\n<pee>This heterogeneous profile is particularly informative as it reveals the dissociation between preserved intellectual abilities and difficulties in cognitive efficiency. A child with a high Verbal IQ but low Processing Speed presents a typical profile requiring specific educational accommodations.<\/pee>\n<h2>3. Diagnostic tests for ASD: structured observation and history taking<\/h2>\n<pee>The diagnosis of Autism Spectrum Disorders relies on a qualitatively different approach than that of ADHD. While ADHD can be partially assessed through standardized cognitive tests, autism requires careful observation of social behaviors, communication, and restricted interests in semi-natural situations.<\/pee>\n<pee>The complexity of the autism spectrum – from Kanner’s autism to Asperger’s syndrome, now unified under the ASD terminology with severity specifiers – necessitates the use of direct observation tools and in-depth anamnesis interviews. These instruments, developed by specialized research teams, allow for standardized assessment of subtle behavioral phenomena.<\/pee>\n<h3>ADOS-2: the gold standard of autistic observation<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">GOLD STANDARD ASD<\/div>\n<div class=\"expert-box-title\">ADOS-2 – Autism Diagnostic Observation Schedule<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udf1f Evaluation Principle<\/div>\n<pee>The ADOS-2 is a semi-structured observation protocol that places the participant in standardized social situations to observe their spontaneous responses. The evaluator proposes specific activities (symbolic play, conversation, collaborative tasks) and codes the quality of social interactions in real-time.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcda Modular Structure<\/div>\n<pee><strong>Toddler Module:<\/strong> 12-30 months | <strong>Module 1:<\/strong> non-verbal or simple phrases | <strong>Module 2:<\/strong> phrastic language | <strong>Module 3:<\/strong> fluent child\/teen language | <strong>Module 4:<\/strong> fluent adult language<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd0d Observed Areas<\/div>\n<pee>The ADOS-2 systematically evaluates: reciprocal social communication, the use and understanding of non-verbal communication, repetitive behaviors and restricted interests, the quality of symbolic and imaginative play, atypical sensory responses.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Scoring and Interpretation<\/div>\n<pee>Each item is scored from 0 (typical behavior) to 3 (very atypical behavior). The scores are converted into two domains: Social Affect and Repetitive Behaviors. The total comparison score determines the classification: ASD, autistic spectrum or non-spectrum.<\/pee>\n <\/div>\n<\/p><\/div>\n<pee>The administration of the ADOS-2 requires specialized training of several days and certification by the test designers. This requirement ensures the standardization of observations but limits its availability to specialized centers with trained professionals.<\/pee>\n<h3>The ADI-R: Structured Developmental History<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC INTERVIEW<\/div>\n<div class=\"expert-box-title\">ADI-R – Autism Diagnostic Interview Revised<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcda Interview Structure<\/div>\n<pee>The ADI-R is a semi-structured interview lasting 2 to 3 hours conducted with parents or guardians. It systematically explores the developmental history from birth: first social smiles, language development, symbolic play, peer relationships, repetitive behaviors, reactions to changes.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd70\ufe0f Critical Periods Explored<\/div>\n<pee><strong>4-5 years:<\/strong> behaviors at their peak expression | <strong>Current Functioning:<\/strong> evolution and adaptation | <strong>Early Development:<\/strong> 0-36 months (critical period for diagnosis)<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Specific Advantages<\/div>\n<pee>The ADI-R is particularly valuable for the retrospective diagnosis of adults (who have no direct memory of their early development) and for cases where direct observation (ADOS) is difficult to perform or uninformative.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Complementary ASD Assessment Tools<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COMPLEMENTARY SCALE<\/div>\n<div class=\"expert-box-title\">CARS-2 – Childhood Autism Rating Scale<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccf Evaluation Principle<\/div>\n<pee>The CARS-2 rates 15 behavioral domains on a scale from 1 (normal) to 4 (severely atypical). Each domain corresponds to a key characteristic of autism: social relationships, imitation, emotional response, body use, adaptation to change, visual and auditory response.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Practical Advantages<\/div>\n<pee>Its relative speed (15-30 minutes) and simple structure make it a useful first-level tool. It can be administered from the age of 2 and does not require as extensive training as the ADOS-2.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a0\ufe0f Usage Limits<\/div>\n<pee>The CARS-2 is less sensitive to mild profiles (level 1 of the spectrum) and atypical presentations. It serves as a complement but cannot replace the ADOS-2\/ADI-R evaluation for a precise differential diagnosis.<\/pee>\n <\/div>\n<\/p><\/div>\n<h2>4. Detailed Comparison Table: ADHD Tests vs ASD Tests<\/h2>\n<pee>Understanding the differences between ADHD and ASD diagnostic tools helps to better grasp the specifics of each disorder and optimize the diagnostic pathway according to the suspected clinical profile.<\/pee>\n<table>\n<thead>\n<tr>\n<th>Test \/ Tool<\/th>\n<th>Targeted Disorder<\/th>\n<th>Duration<\/th>\n<th>Estimated Cost<\/th>\n<th>Required Training<\/th>\n<th>Who Administers It<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>DYNSEO Online Tests<\/strong><\/td>\n<td>ADHD (screening)<\/td>\n<td>10\u201315 min<\/td>\n<td>Free<\/td>\n<td>None<\/td>\n<td>Self-administration<\/td>\n<\/tr>\n<tr>\n<td><strong>ASRS v1.1<\/strong><\/td>\n<td>Adult ADHD<\/td>\n<td>5 min<\/td>\n<td>Free<\/td>\n<td>None<\/td>\n<td>Self-questionnaire<\/td>\n<\/tr>\n<tr>\n<td><strong>Conners-3<\/strong><\/td>\n<td>Child\/Teen ADHD<\/td>\n<td>15\u201320 min<\/td>\n<td>Includes assessment (50-80\u20ac)<\/td>\n<td>Psychometry Training<\/td>\n<td>Psychologist, Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>CPT \/ TOVA<\/strong><\/td>\n<td>ADHD (all populations)<\/td>\n<td>15\u201321 min<\/td>\n<td>Includes assessment (80-120\u20ac)<\/td>\n<td>Neuropsychology<\/td>\n<td>Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>Stroop Test<\/strong><\/td>\n<td>ADHD, executive functions<\/td>\n<td>5 min<\/td>\n<td>Includes assessment (30-50\u20ac)<\/td>\n<td>Neuropsychology<\/td>\n<td>Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>WISC-V \/ WAIS-IV<\/strong><\/td>\n<td>ADHD + ASD (cognitive profile)<\/td>\n<td>90\u2013120 min<\/td>\n<td>Includes assessment (200-300\u20ac)<\/td>\n<td>Advanced Psychometry<\/td>\n<td>Psychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>ADOS-2<\/strong><\/td>\n<td>ASD (gold standard)<\/td>\n<td>45 min<\/td>\n<td>Includes ASD assessment (150-250\u20ac)<\/td>\n<td>ADOS Certification<\/td>\n<td>Certified Clinician<\/td>\n<\/tr>\n<tr>\n<td><strong>ADI-R<\/strong><\/td>\n<td>ASD (anamnestic)<\/td>\n<td>2\u20133h<\/td>\n<td>Includes ASD assessment (200-350\u20ac)<\/td>\n<td>ADI-R Training<\/td>\n<td>Trained Clinician<\/td>\n<\/tr>\n<tr>\n<td><strong>CARS-2<\/strong><\/td>\n<td>ASD (screening)<\/td>\n<td>15\u201330 min<\/td>\n<td>Includes ASD assessment (50-100\u20ac)<\/td>\n<td>Clinical Training<\/td>\n<td>Psychologist, Child Psychiatrist<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>5. DYNSEO Screening Tests: An Accessible First Step<\/h2>\n<pee>Before engaging in a lengthy and costly institutional diagnostic pathway, DYNSEO online tests offer an initial objective and scientifically based approach. These tools, based on validated experimental paradigms, allow for obtaining an initial attentional profile and effectively preparing for a medical consultation.<\/pee>\n<pee>The value of this approach lies in its ability to objectify difficulties that are often hard to describe verbally. Many people experience attention or concentration problems without being able to quantify them precisely. DYNSEO tests provide numerical data comparable to age norms, facilitating communication with healthcare professionals.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">DYNSEO SCIENTIFIC APPROACH<\/div>\n<pee>All DYNSEO tests are built on experimental paradigms derived from research in cognitive neuropsychology. They measure the same dimensions as clinical tests (sustained attention, selective attention, processing speed, inhibition) with a methodology adapted for online administration.<\/pee>\n <\/div>\n<h3>DYNSEO ADHD Test – Behavioral Screening<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">FREE TEST<\/div>\n<div class=\"expert-box-title\">\ud83c\udfaf DYNSEO ADHD Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Test Content<\/div>\n<pee>Evaluation of ADHD symptoms according to DSM-5 criteria through 18 questions covering inattention, hyperactivity, and impulsivity. Each symptom is assessed for its frequency (never, sometimes, often, very often) and its functional impact in different contexts (work, home, social).<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Result Interpretation<\/div>\n<pee>The test generates an overall score and sub-scores by dimension. It indicates the level of probability of ADHD (low, moderate, high) and provides personalized recommendations based on the obtained profile.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Scientific Validity<\/div>\n<pee>Based on an adaptation of the ASRS and Conners scales, validated on a French sample of 2,500 participants. Sensitivity: 82%, Specificity: 76% for clinically confirmed ADHD diagnosis.<\/pee>\n <\/div>\n<pee><a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Take the DYNSEO ADHD test for free<\/a><\/pee>\n <\/div>\n<h3>Selective Attention Test – Online CPT Equivalent<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">\ud83c\udfaf DYNSEO Selective Attention Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Experimental Paradigm<\/div>\n<pee>Continuous vigilance task adapted from the classic CPT: identification of specific targets (shapes, colors, numbers) among distractors over 12 minutes. Measures sustained attention, impulsivity, and attentional variability.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Measured Variables<\/div>\n<pee><strong>Omission Rate:<\/strong> missed targets (inattention) | <strong>Commission Rate:<\/strong> false alarms (impulsivity) | <strong>Mean Reaction Time:<\/strong> processing speed | <strong>RT Variability:<\/strong> attentional consistency<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Attentional Profile<\/div>\n<pee>The test generates a multidimensional attentional profile with comparison to age norms (percentiles). It identifies specific strengths and weaknesses of the attentional system.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Processing Speed Test – Cognitive Efficiency<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">\u26a1 DYNSEO Processing Speed Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83e\udde0 Cognitive Principle<\/div>\n<pee>Measures the speed and efficiency of cognitive processing through simple decision tasks (shape matching, visual search, symbolic substitution). Equivalent to the “Processing Speed” subtests of the WAIS-IV.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Calculated indicators<\/div>\n<pee><strong>Processing speed:<\/strong> items\/minute | <strong>Accuracy:<\/strong> % of correct answers | <strong>Efficiency:<\/strong> speed\/accuracy ratio | <strong>Fatigability:<\/strong> performance evolution over time<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Diagnostic utility<\/div>\n<pee>Processing speed is one of the most sensitive indicators for ADHD. A score < 10th percentile suggests a neuropsychological consultation, especially if associated with other cognitive difficulties.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Concentration and Attention Test – Overall Assessment<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COMPREHENSIVE ASSESSMENT<\/div>\n<div class=\"expert-box-title\">\ud83d\udcca DYNSEO Concentration and Attention Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Multidimensional approach<\/div>\n<pee>Combination of several attentional paradigms (sustained, selective, divided, executive) for a complete attentional profile. Total duration: 25 minutes divided into 6 specialized modules.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Assessed modules<\/div>\n<pee><strong>Sustained attention:<\/strong> continuous vigilance | <strong>Selective attention:<\/strong> filtering distractors | <strong>Divided attention:<\/strong> dual task | <strong>Flexibility:<\/strong> attentional switching | <strong>Inhibition:<\/strong> impulse control | <strong>Working memory:<\/strong> maintenance and manipulation<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Synthetic profile<\/div>\n<pee>Generation of a detailed report with standardized scores, profile graphs, normative comparisons, and personalized training or consultation recommendations.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"cta-box\">\n<h3>\ud83c\udfaf Start your assessment with DYNSEO<\/h3>\n<pee>Four complementary tests for an initial objective attentional profile, scientifically validated and completely free. Effectively prepare your medical consultation with concrete data.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Free DYNSEO Tests<\/a><br \/>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n<\/p><\/div>\n<h2>6. Interpreting results and defining the next steps<\/h2>\n<pee>Interpreting screening test results requires a nuanced approach that takes into account the scores obtained, their consistency with daily difficulties, and contextual factors that may influence performance (fatigue, stress, testing conditions).<\/pee>\n<pee>It is crucial to understand that screening tests, even scientifically validated, do not constitute a diagnosis. They provide objective indicators that guide the necessity or not of a thorough clinical evaluation. This distinction is fundamental to avoid self-diagnosis and ensure appropriate support.<\/pee>\n<h3>DYNSEO Results Interpretation Grid<\/h3>\n<div class=\"key-points\">\n<h4>Score within the norm (> 25th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Attention performance compatible with typical functioning<\/li>\n<li><strong>Recommendations:<\/strong> If difficulties are felt despite good scores, explore other factors (anxiety, sleep, cognitive overload)<\/li>\n<li><strong>Follow-up:<\/strong> Preventive cognitive training, optimized lifestyle<\/li>\n<li><strong>Consultation:<\/strong> Necessary only if symptoms persist and impact functioning<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Slightly low score (10-25th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Mild to moderate attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Targeted cognitive training, environmental adjustments<\/li>\n<li><strong>Follow-up:<\/strong> Reassessment after 6-8 weeks of training<\/li>\n<li><strong>Consultation:<\/strong> Advised if difficulties disrupt professional\/school daily life<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Low score (5-10th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Significant attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Medical consultation recommended (general practitioner \u2192 specialist)<\/li>\n<li><strong>Follow-up:<\/strong> Comprehensive neuropsychological assessment potentially indicated<\/li>\n<li><strong>Documentation:<\/strong> Bring DYNSEO results to the consultation<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Very low score (< 5th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Severe attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Specialized consultation without delay (neuropsychologist, psychiatrist)<\/li>\n<li><strong>Urgency:<\/strong> Particularly if associated with significant functional impact<\/li>\n<li><strong>Support:<\/strong> Immediate adjustments to be made while awaiting diagnosis<\/li>\n<\/ul><\/div>\n<h3>Optimize your consultation with DYNSEO results<\/h3>\n<div class=\"conseil-card\">\n<h4>Effectively prepare for your medical consultation<\/h4>\n<pee>Bring your printed DYNSEO test results with profile graphs. Prepare a description of the contexts where difficulties manifest (work, home, social) and their duration. Note any family history and strategies already tried. This preparation optimizes the effectiveness of the consultation and reduces the risk of minimizing difficulties.<\/pee>\n <\/div>\n<h2>7. The institutional diagnostic pathway: steps and costs<\/h2>\n<pee>Once the decision to consult is made, the diagnostic pathway generally follows a logical progression: primary care consultation (general practitioner), specialized referral if necessary, then in-depth assessment. Understanding this progression helps navigate the healthcare system better and optimizes the chances of obtaining an accurate diagnosis.<\/pee>\n<pee>The costs of a diagnostic assessment vary significantly depending on the type of suspected disorder, the complexity of the case, and the type of facility consulted (public vs private). This variability requires financial planning and an understanding of care modalities.<\/pee>\n<h3>ADHD diagnostic pathway<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">ADHD PATHWAY<\/div>\n<div class=\"expert-box-title\">Steps of the ADHD diagnosis<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">1\ufe0f\u20e3 First-line consultation<\/div>\n<pee><strong>Primary care physician:<\/strong> medical history, elimination of differential diagnoses, specialized referral | <strong>Cost:<\/strong> 25\u20ac (reimbursed) | <strong>Duration:<\/strong> 30-45 min<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">2\ufe0f\u20e3 Specialized consultation<\/div>\n<pee><strong>Psychiatrist\/Child psychiatrist:<\/strong> in-depth clinical evaluation, standardized questionnaires | <strong>Cost:<\/strong> 50-120\u20ac (partially reimbursed) | <strong>Duration:<\/strong> 60-90 min<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">3\ufe0f\u20e3 Neuropsychological assessment<\/div>\n<pee><strong>Neuropsychologist:<\/strong> comprehensive cognitive tests (CPT, Stroop, WISC\/WAIS) | <strong>Cost:<\/strong> 300-600\u20ac (not reimbursed) | <strong>Duration:<\/strong> 3-4h + feedback<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">4\ufe0f\u20e3 Diagnostic summary<\/div>\n<pee><strong>Specialist physician:<\/strong> integration of data, differential diagnosis, care plan | <strong>Cost:<\/strong> 60-100\u20ac | <strong>Duration:<\/strong> 45 min<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Diagnostic pathway for autism<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-\n<script type=\"application\/ld+json\">\n{\n “@context”: “https:\/\/schema.org”,\n “@graph”: [\n {\n “@type”: “Article”,\n “@id”: “https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#article”,\n “headline”: “Tests diagnostiques TDAH et TSA : outils 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{\n “@type”: “ListItem”,\n “position”: 2,\n “name”: “Blog”,\n “item”: “https:\/\/www.dynseo.com\/blog”\n },\n {\n “@type”: “ListItem”,\n “position”: 3,\n “name”: “Tests diagnostiques TDAH et TSA : outils scientifiques | DYNSEO”\n }\n ]\n },\n {\n “@type”: “FAQPage”,\n “@id”: “https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#faq”,\n “mainEntity”: [\n {\n “@type”: “Question”,\n “name”: “Quels sont les outils de diagnostic pour le TDAH ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Les outils de diagnostic pour le TDAH incluent des \u00e9chelles d’\u00e9valuation standardis\u00e9es, des tests neuropsychologiques et des observations comportementales r\u00e9alis\u00e9s par des professionnels de sant\u00e9 qualifi\u00e9s.”\n }\n },\n {\n “@type”: “Question”,\n “name”: “Comment diagnostique-t-on les troubles du spectre autistique (TSA) ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Le diagnostic des TSA s’appuie sur des outils scientifiques comme l’ADOS-2, l’ADI-R et des \u00e9valuations multidisciplinaires incluant psychologues, psychiatres et orthophonistes sp\u00e9cialis\u00e9s.”\n }\n },\n {\n “@type”: “Question”,\n “name”: “\u00c0 quel \u00e2ge peut-on diagnostiquer le TDAH et les TSA ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Les TSA peuvent \u00eatre diagnostiqu\u00e9s d\u00e8s l’\u00e2ge de 18 mois, tandis que le TDAH est g\u00e9n\u00e9ralement diagnostiqu\u00e9 \u00e0 partir de 6 ans, bien que les premiers signes puissent appara\u00eetre plus t\u00f4t.”\n }\n }\n ]\n }\n ]\n}\n<\/script>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tests diagnostiques TDAH et TSA : outils scientifiques | DYNSEO Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series ADHD and ASD Diagnostic Tests: scientific tools \ud83d\udcc5 Published in April 2026 \u23f1\ufe0f 15 min read \ud83d\udc65 Parents, professionals, concerned adults \u2b50 4.8\/5 (127 reviews) CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 […]<\/p>\n","protected":false},"author":4,"featured_media":100456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"[et_pb_section fb_built=\"1\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_row _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" column_structure=\"4_4\" global_colors_info=\"{}\"][et_pb_column type=\"4_4\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_code _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"]<!DOCTYPE html>\n<html lang=\"fr\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n 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16px !important;\n }\n \n table, th, td {\n font-size: 0.9rem;\n }\n }\n \n @media (max-width: 400px) {\n .article-hero h1 {\n font-size: 1.4rem !important;\n }\n \n h2 {\n font-size: 1.3rem !important;\n }\n \n .stat-card .number {\n font-size: 1.8rem;\n }\n \n .btn-white, .btn-outline {\n padding: 12px 20px;\n font-size: 0.9rem;\n }\n }\n \n\n<style>\n\/* DAG-RESPONSIVE-FIX *\/\n@media (max-width: 768px) {\n p, li { text-align: left !important; word-spacing: normal !important; hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }\n .container { padding: 12px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<\/head>\n<body><section class=\"article-hero\">\n <div class=\"article-hero-inner\">\n <div class=\"article-breadcrumb\">\n Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests\n <\/div>\n \n <div class=\"article-category\">\n \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series\n <\/div>\n \n <h1>ADHD and ASD Diagnostic Tests: <span class=\"hl\">scientific tools<\/span><\/h1>\n \n <div class=\"article-meta\">\n <span>\ud83d\udcc5 Published in April 2026<\/span>\n <span>\u23f1\ufe0f 15 min read<\/span>\n <span>\ud83d\udc65 Parents, professionals, concerned adults<\/span>\n <span>\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n <\/div>\n <div class=\"article-hero-curve\"><\/div>\n <\/section>\n\n <div class=\"article-body\">\n <div class=\"container\">\n<div class=\"intro-block\">\n CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 the diagnostic tests for ADHD and autism are numerous and specific. An accurate diagnosis can transform a life, but it is only possible with the right scientific tools. This comprehensive guide explains the purpose of each diagnostic instrument, the cost of an assessment, their strengths and limitations, and how to start with the free DYNSEO tests before a specialized consultation. Understanding these tools helps parents and concerned adults better navigate the often long and costly diagnostic journey.\n <\/div>\n\n <div class=\"stats-grid\">\n <div class=\"stat-card\">\n <span class=\"number\">FREE<\/span>\n <span class=\"label\">The DYNSEO screening tests, available immediately online<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">400\u2013800\u20ac<\/span>\n <span class=\"label\">Cost of a complete ADHD neuropsychological assessment in practice<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">500\u20131500\u20ac<\/span>\n <span class=\"label\">Cost of a complete ASD assessment (ADOS-2 + ADI-R + cognitive evaluation)<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">15+<\/span>\n <span class=\"label\">Standardized diagnostic tests available for ADHD and ASD<\/span>\n <\/div>\n <\/div>\n\n <h2>1. The scientific foundations of neurodevelopmental diagnosis<\/h2>\n \n <p>The diagnosis of ADHD and autism spectrum disorders (ASD) is based on a rigorous scientific approach that combines several dimensions of assessment. Contrary to popular belief, it is not a simple clinical observation or professional intuition, but a standardized process using internationally validated instruments.<\/p>\n\n <p>The modern diagnostic approach relies on the principle of data convergence: no single test can establish a diagnosis. It is the consistency between different types of measures - behavioral questionnaires, objective cognitive tests, structured clinical observations, and developmental history - that allows for a reliable diagnosis.<\/p>\n\n <p>This multi-instrumental approach meets a crucial precision requirement: the consequences of an erroneous diagnosis, whether a false positive or a false negative, can be severe for the individual and their family. Over-diagnosis can lead to inappropriate treatments and stigmatization, while under-diagnosis deprives the person of necessary support.<\/p>\n<div class=\"conseil-card\">\n <h4>Why is standardization essential?<\/h4>\n <p>Standardized tests allow for comparing an individual's performance to that of a representative sample of their age group. Without this normative reference, it is impossible to determine whether an observed difficulty is a normal variation in development or a disorder requiring specialized support.<\/p>\n <\/div>\n\n <h2>2. Diagnostic tests for ADHD: a multidimensional approach<\/h2>\n\n <p>Attention Deficit Hyperactivity Disorder (ADHD) is characterized by persistent difficulties in attention, impulsivity, and sometimes motor hyperactivity. Its diagnosis requires an evaluation that covers three complementary areas: reported behavioral symptoms, objective cognitive performance, and functional analysis of difficulties.<\/p>\n\n <p>The complexity of ADHD lies in its great variability of expression. Some individuals primarily present attentional difficulties (inattentive presentation), others hyperactivity-impulsivity (hyperactive-impulsive presentation), and still others a combination of both (mixed presentation). This diversity necessitates the use of multiple and complementary diagnostic tools.<\/p>\n\n <h3>Standardized behavioral questionnaires<\/h3>\n\n <p>Behavioral assessment is the first pillar of ADHD diagnosis. It relies on standardized questionnaires that quantify the symptoms observed in different life contexts.<\/p>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n <div class=\"expert-box-title\">ASRS v1.1 - Adult ADHD Self-Report Scale<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Technical characteristics<\/div>\n <p><strong>Duration:<\/strong> 5-8 minutes | <strong>Items:<\/strong> 6 key questions | <strong>Population:<\/strong> Adults 18+ years<\/p>\n <p>The ASRS was developed by the World Health Organization in collaboration with Harvard University. It is the most widely used adult ADHD screening questionnaire in the world, translated into 35 languages and validated on over 15,000 participants.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Assessed areas<\/div>\n <p>The questionnaire covers the 18 symptoms of the DSM-5 grouped into two dimensions: inattention (9 items) and hyperactivity-impulsivity (9 items). The 6 questions of the short version correspond to the most predictive symptoms of the diagnosis according to statistical analyses.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Score interpretation<\/div>\n <p>A score of 4\/6 or more in the \"often\/very often\" range indicates a high probability of ADHD (sensitivity 68%, specificity 99%). This threshold justifies a specialized consultation for diagnostic confirmation.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n <div class=\"expert-box-title\">Conners Scales - Version 3<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Available versions<\/div>\n <p><strong>Conners-3 Parents:<\/strong> 27 to 110 items depending on the version | <strong>Conners-3 Teachers:<\/strong> 39 to 59 items | <strong>Conners-3 Self-Report:<\/strong> from 8 years old, 28 to 99 items<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd04 Multi-informant approach<\/div>\n <p>The strength of the Conners scales lies in their triangular approach. Symptoms reported by parents, teachers, and the child themselves are compared to identify convergences and divergences. This method allows for distinguishing situational difficulties from persistent disorders.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Calculated indices<\/div>\n <p>The scales provide standardized T scores (mean 50, standard deviation 10) for each dimension: inattention, hyperactivity-impulsivity, learning problems, executive function, aggression, peer relationships. A T score \u2265 65 is considered clinically significant.<\/p>\n <\/div>\n <\/div>\n\n <h3>Objective cognitive tests for ADHD<\/h3>\n\n <p>Beyond behavioral symptoms, ADHD is characterized by measurable alterations in cognitive functions, particularly attentional and executive. Objective cognitive tests allow for precise and reproducible quantification of these difficulties.<\/p>\n\n <div class=\"tip-box\">\n <div class=\"tip-box-label\">FREE ACCESS DYNSEO<\/div>\n <p>DYNSEO offers free equivalents of the main ADHD cognitive tests: <strong>Selective Attention Test<\/strong> (CPT paradigm), <strong>Processing Speed Test<\/strong> and <strong>Concentration Test<\/strong>. These tools allow for an initial objective assessment before medical consultation.<\/p>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Access the free DYNSEO tests<\/a>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">REFERENCE COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">CPT - Continuous Performance Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Operating principle<\/div>\n <p>The CPT measures sustained attention and inhibitory control over 15-20 minutes. The participant must quickly respond to target stimuli (letters, numbers, or specific shapes) while ignoring distractors. This seemingly simple task intensely engages the frontal attentional networks.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Measured variables<\/div>\n <p><strong>Omissions:<\/strong> missed targets (inattention) | <strong>Commissions:<\/strong> false alarms (impulsivity) | <strong>Mean reaction time:<\/strong> processing speed | <strong>Temporal variability:<\/strong> attentional consistency<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd2c Scientific validity<\/div>\n <p>Over 200 studies validate the use of the CPT in ADHD. Meta-analyses show a moderate to strong effect size (d = 0.5 to 1.2) for differentiating ADHD patients from controls, particularly on reaction time variability.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">EXECUTIVE TEST<\/div>\n <div class=\"expert-box-title\">Stroop Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfa8 Experimental paradigm<\/div>\n <p>The Stroop test assesses cognitive inhibition by creating a conflict between an automatic response (reading) and a controlled response (color naming). For example, the word \"RED\" written in blue requires saying \"blue\" while inhibiting the automatic reading \"red\".<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Interference Effect<\/div>\n <p>The Stroop effect is calculated by the difference between reaction times in incongruent versus congruent conditions. In ADHD, this effect is typically increased, reflecting a difficulty in frontal executive control.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83e\udde0 Neurobiological Bases<\/div>\n <p>Neuroimaging shows that the Stroop test specifically activates the anterior cingulate cortex and the dorsolateral prefrontal cortex, two key regions of executive functions often impaired in ADHD.<\/p>\n <\/div>\n <\/div>\n\n <h3>Comprehensive cognitive assessment: WISC-V and WAIS-IV<\/h3>\n\n <p>The Wechsler scales (WISC-V for children, WAIS-IV for adults) are the reference cognitive assessment in neuropsychology. In the context of ADHD, they help identify characteristic cognitive profiles and quantify the functional impact of attentional difficulties.<\/p>\n\n <div class=\"key-points\">\n <h4>Typical ADHD cognitive profile in the Wechsler scales<\/h4>\n <ul>\n <li><strong>Verbal Comprehension:<\/strong> often preserved or high (reflects actual intellectual potential)<\/li>\n <li><strong>Perceptual Reasoning:<\/strong> variable depending on subtests and the presence of hyperactivity<\/li>\n <li><strong>Working Memory:<\/strong> frequently weakened (difficulties in mental manipulation)<\/li>\n <li><strong>Processing Speed:<\/strong> often slowed (inefficiency related to inattention)<\/li>\n <li><strong>\"Sawtooth\" Pattern:<\/strong> significant gaps between indices (> 15 points)<\/li>\n <\/ul>\n <\/div>\n\n <p>This heterogeneous profile is particularly informative as it reveals the dissociation between preserved intellectual abilities and difficulties in cognitive efficiency. A child with a high Verbal IQ but low Processing Speed presents a typical profile requiring specific educational accommodations.<\/p>\n\n <h2>3. Diagnostic tests for ASD: structured observation and history taking<\/h2>\n\n <p>The diagnosis of Autism Spectrum Disorders relies on a qualitatively different approach than that of ADHD. While ADHD can be partially assessed through standardized cognitive tests, autism requires careful observation of social behaviors, communication, and restricted interests in semi-natural situations.<\/p>\n\n <p>The complexity of the autism spectrum - from Kanner's autism to Asperger's syndrome, now unified under the ASD terminology with severity specifiers - necessitates the use of direct observation tools and in-depth anamnesis interviews. These instruments, developed by specialized research teams, allow for standardized assessment of subtle behavioral phenomena.<\/p>\n\n <h3>ADOS-2: the gold standard of autistic observation<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">GOLD STANDARD ASD<\/div>\n <div class=\"expert-box-title\">ADOS-2 - Autism Diagnostic Observation Schedule<\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udf1f Evaluation Principle<\/div>\n <p>The ADOS-2 is a semi-structured observation protocol that places the participant in standardized social situations to observe their spontaneous responses. The evaluator proposes specific activities (symbolic play, conversation, collaborative tasks) and codes the quality of social interactions in real-time.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcda Modular Structure<\/div>\n <p><strong>Toddler Module:<\/strong> 12-30 months | <strong>Module 1:<\/strong> non-verbal or simple phrases | <strong>Module 2:<\/strong> phrastic language | <strong>Module 3:<\/strong> fluent child\/teen language | <strong>Module 4:<\/strong> fluent adult language<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd0d Observed Areas<\/div>\n <p>The ADOS-2 systematically evaluates: reciprocal social communication, the use and understanding of non-verbal communication, repetitive behaviors and restricted interests, the quality of symbolic and imaginative play, atypical sensory responses.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Scoring and Interpretation<\/div>\n <p>Each item is scored from 0 (typical behavior) to 3 (very atypical behavior). The scores are converted into two domains: Social Affect and Repetitive Behaviors. The total comparison score determines the classification: ASD, autistic spectrum or non-spectrum.<\/p>\n <\/div>\n <\/div>\n\n <p>The administration of the ADOS-2 requires specialized training of several days and certification by the test designers. This requirement ensures the standardization of observations but limits its availability to specialized centers with trained professionals.<\/p>\n\n <h3>The ADI-R: Structured Developmental History<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC INTERVIEW<\/div>\n <div class=\"expert-box-title\">ADI-R - Autism Diagnostic Interview Revised<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcda Interview Structure<\/div>\n <p>The ADI-R is a semi-structured interview lasting 2 to 3 hours conducted with parents or guardians. It systematically explores the developmental history from birth: first social smiles, language development, symbolic play, peer relationships, repetitive behaviors, reactions to changes.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd70\ufe0f Critical Periods Explored<\/div>\n <p><strong>4-5 years:<\/strong> behaviors at their peak expression | <strong>Current Functioning:<\/strong> evolution and adaptation | <strong>Early Development:<\/strong> 0-36 months (critical period for diagnosis)<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Specific Advantages<\/div>\n <p>The ADI-R is particularly valuable for the retrospective diagnosis of adults (who have no direct memory of their early development) and for cases where direct observation (ADOS) is difficult to perform or uninformative.<\/p>\n <\/div>\n <\/div>\n\n <h3>Complementary ASD Assessment Tools<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COMPLEMENTARY SCALE<\/div>\n <div class=\"expert-box-title\">CARS-2 - Childhood Autism Rating Scale<\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccf Evaluation Principle<\/div>\n <p>The CARS-2 rates 15 behavioral domains on a scale from 1 (normal) to 4 (severely atypical). Each domain corresponds to a key characteristic of autism: social relationships, imitation, emotional response, body use, adaptation to change, visual and auditory response.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Practical Advantages<\/div>\n <p>Its relative speed (15-30 minutes) and simple structure make it a useful first-level tool. It can be administered from the age of 2 and does not require as extensive training as the ADOS-2.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a0\ufe0f Usage Limits<\/div>\n <p>The CARS-2 is less sensitive to mild profiles (level 1 of the spectrum) and atypical presentations. It serves as a complement but cannot replace the ADOS-2\/ADI-R evaluation for a precise differential diagnosis.<\/p>\n <\/div>\n <\/div>\n\n <h2>4. Detailed Comparison Table: ADHD Tests vs ASD Tests<\/h2>\n\n <p>Understanding the differences between ADHD and ASD diagnostic tools helps to better grasp the specifics of each disorder and optimize the diagnostic pathway according to the suspected clinical profile.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Test \/ Tool<\/th>\n <th>Targeted Disorder<\/th>\n <th>Duration<\/th>\n <th>Estimated Cost<\/th>\n <th>Required Training<\/th>\n <th>Who Administers It<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>DYNSEO Online Tests<\/strong><\/td>\n <td>ADHD (screening)<\/td>\n <td>10\u201315 min<\/td>\n <td>Free<\/td>\n <td>None<\/td>\n <td>Self-administration<\/td>\n <\/tr>\n <tr>\n <td><strong>ASRS v1.1<\/strong><\/td>\n <td>Adult ADHD<\/td>\n <td>5 min<\/td>\n <td>Free<\/td>\n <td>None<\/td>\n <td>Self-questionnaire<\/td>\n <\/tr>\n <tr>\n <td><strong>Conners-3<\/strong><\/td>\n <td>Child\/Teen ADHD<\/td>\n <td>15\u201320 min<\/td>\n <td>Includes assessment (50-80\u20ac)<\/td>\n <td>Psychometry Training<\/td>\n <td>Psychologist, Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>CPT \/ TOVA<\/strong><\/td>\n <td>ADHD (all populations)<\/td>\n <td>15\u201321 min<\/td>\n <td>Includes assessment (80-120\u20ac)<\/td>\n <td>Neuropsychology<\/td>\n <td>Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>Stroop Test<\/strong><\/td>\n <td>ADHD, executive functions<\/td>\n <td>5 min<\/td>\n <td>Includes assessment (30-50\u20ac)<\/td>\n <td>Neuropsychology<\/td>\n <td>Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>WISC-V \/ WAIS-IV<\/strong><\/td>\n <td>ADHD + ASD (cognitive profile)<\/td>\n <td>90\u2013120 min<\/td>\n <td>Includes assessment (200-300\u20ac)<\/td>\n <td>Advanced Psychometry<\/td>\n <td>Psychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>ADOS-2<\/strong><\/td>\n <td>ASD (gold standard)<\/td>\n <td>45 min<\/td>\n <td>Includes ASD assessment (150-250\u20ac)<\/td>\n <td>ADOS Certification<\/td>\n <td>Certified Clinician<\/td>\n <\/tr>\n <tr>\n <td><strong>ADI-R<\/strong><\/td>\n <td>ASD (anamnestic)<\/td>\n <td>2\u20133h<\/td>\n <td>Includes ASD assessment (200-350\u20ac)<\/td>\n <td>ADI-R Training<\/td>\n <td>Trained Clinician<\/td>\n <\/tr>\n <tr>\n <td><strong>CARS-2<\/strong><\/td>\n <td>ASD (screening)<\/td>\n <td>15\u201330 min<\/td>\n <td>Includes ASD assessment (50-100\u20ac)<\/td>\n <td>Clinical Training<\/td>\n <td>Psychologist, Child Psychiatrist<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>5. DYNSEO Screening Tests: An Accessible First Step<\/h2>\n\n <p>Before engaging in a lengthy and costly institutional diagnostic pathway, DYNSEO online tests offer an initial objective and scientifically based approach. These tools, based on validated experimental paradigms, allow for obtaining an initial attentional profile and effectively preparing for a medical consultation.<\/p>\n\n <p>The value of this approach lies in its ability to objectify difficulties that are often hard to describe verbally. Many people experience attention or concentration problems without being able to quantify them precisely. DYNSEO tests provide numerical data comparable to age norms, facilitating communication with healthcare professionals.<\/p>\n<div class=\"tip-box\">\n <div class=\"tip-box-label\">DYNSEO SCIENTIFIC APPROACH<\/div>\n <p>All DYNSEO tests are built on experimental paradigms derived from research in cognitive neuropsychology. They measure the same dimensions as clinical tests (sustained attention, selective attention, processing speed, inhibition) with a methodology adapted for online administration.<\/p>\n <\/div>\n\n <h3>DYNSEO ADHD Test - Behavioral Screening<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">FREE TEST<\/div>\n <div class=\"expert-box-title\">\ud83c\udfaf DYNSEO ADHD Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Test Content<\/div>\n <p>Evaluation of ADHD symptoms according to DSM-5 criteria through 18 questions covering inattention, hyperactivity, and impulsivity. Each symptom is assessed for its frequency (never, sometimes, often, very often) and its functional impact in different contexts (work, home, social).<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Result Interpretation<\/div>\n <p>The test generates an overall score and sub-scores by dimension. It indicates the level of probability of ADHD (low, moderate, high) and provides personalized recommendations based on the obtained profile.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Scientific Validity<\/div>\n <p>Based on an adaptation of the ASRS and Conners scales, validated on a French sample of 2,500 participants. Sensitivity: 82%, Specificity: 76% for clinically confirmed ADHD diagnosis.<\/p>\n <\/div>\n <p><a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Take the DYNSEO ADHD test for free<\/a><\/p>\n <\/div>\n\n <h3>Selective Attention Test - Online CPT Equivalent<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">\ud83c\udfaf DYNSEO Selective Attention Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Experimental Paradigm<\/div>\n <p>Continuous vigilance task adapted from the classic CPT: identification of specific targets (shapes, colors, numbers) among distractors over 12 minutes. Measures sustained attention, impulsivity, and attentional variability.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Measured Variables<\/div>\n <p><strong>Omission Rate:<\/strong> missed targets (inattention) | <strong>Commission Rate:<\/strong> false alarms (impulsivity) | <strong>Mean Reaction Time:<\/strong> processing speed | <strong>RT Variability:<\/strong> attentional consistency<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Attentional Profile<\/div>\n <p>The test generates a multidimensional attentional profile with comparison to age norms (percentiles). It identifies specific strengths and weaknesses of the attentional system.<\/p>\n <\/div>\n <\/div>\n\n <h3>Processing Speed Test - Cognitive Efficiency<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">\u26a1 DYNSEO Processing Speed Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83e\udde0 Cognitive Principle<\/div>\n <p>Measures the speed and efficiency of cognitive processing through simple decision tasks (shape matching, visual search, symbolic substitution). Equivalent to the \"Processing Speed\" subtests of the WAIS-IV.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Calculated indicators<\/div>\n <p><strong>Processing speed:<\/strong> items\/minute | <strong>Accuracy:<\/strong> % of correct answers | <strong>Efficiency:<\/strong> speed\/accuracy ratio | <strong>Fatigability:<\/strong> performance evolution over time<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Diagnostic utility<\/div>\n <p>Processing speed is one of the most sensitive indicators for ADHD. A score < 10th percentile suggests a neuropsychological consultation, especially if associated with other cognitive difficulties.<\/p>\n <\/div>\n <\/div>\n\n <h3>Concentration and Attention Test - Overall Assessment<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COMPREHENSIVE ASSESSMENT<\/div>\n <div class=\"expert-box-title\">\ud83d\udcca DYNSEO Concentration and Attention Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Multidimensional approach<\/div>\n <p>Combination of several attentional paradigms (sustained, selective, divided, executive) for a complete attentional profile. Total duration: 25 minutes divided into 6 specialized modules.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Assessed modules<\/div>\n <p><strong>Sustained attention:<\/strong> continuous vigilance | <strong>Selective attention:<\/strong> filtering distractors | <strong>Divided attention:<\/strong> dual task | <strong>Flexibility:<\/strong> attentional switching | <strong>Inhibition:<\/strong> impulse control | <strong>Working memory:<\/strong> maintenance and manipulation<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Synthetic profile<\/div>\n <p>Generation of a detailed report with standardized scores, profile graphs, normative comparisons, and personalized training or consultation recommendations.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"cta-box\">\n <h3>\ud83c\udfaf Start your assessment with DYNSEO<\/h3>\n <p>Four complementary tests for an initial objective attentional profile, scientifically validated and completely free. Effectively prepare your medical consultation with concrete data.<\/p>\n <div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Free DYNSEO Tests<\/a>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n <\/div>\n\n <h2>6. Interpreting results and defining the next steps<\/h2>\n\n <p>Interpreting screening test results requires a nuanced approach that takes into account the scores obtained, their consistency with daily difficulties, and contextual factors that may influence performance (fatigue, stress, testing conditions).<\/p>\n\n <p>It is crucial to understand that screening tests, even scientifically validated, do not constitute a diagnosis. They provide objective indicators that guide the necessity or not of a thorough clinical evaluation. This distinction is fundamental to avoid self-diagnosis and ensure appropriate support.<\/p>\n\n <h3>DYNSEO Results Interpretation Grid<\/h3>\n<div class=\"key-points\">\n <h4>Score within the norm (> 25th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Attention performance compatible with typical functioning<\/li>\n <li><strong>Recommendations:<\/strong> If difficulties are felt despite good scores, explore other factors (anxiety, sleep, cognitive overload)<\/li>\n <li><strong>Follow-up:<\/strong> Preventive cognitive training, optimized lifestyle<\/li>\n <li><strong>Consultation:<\/strong> Necessary only if symptoms persist and impact functioning<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Slightly low score (10-25th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Mild to moderate attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Targeted cognitive training, environmental adjustments<\/li>\n <li><strong>Follow-up:<\/strong> Reassessment after 6-8 weeks of training<\/li>\n <li><strong>Consultation:<\/strong> Advised if difficulties disrupt professional\/school daily life<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Low score (5-10th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Significant attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Medical consultation recommended (general practitioner \u2192 specialist)<\/li>\n <li><strong>Follow-up:<\/strong> Comprehensive neuropsychological assessment potentially indicated<\/li>\n <li><strong>Documentation:<\/strong> Bring DYNSEO results to the consultation<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Very low score (< 5th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Severe attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Specialized consultation without delay (neuropsychologist, psychiatrist)<\/li>\n <li><strong>Urgency:<\/strong> Particularly if associated with significant functional impact<\/li>\n <li><strong>Support:<\/strong> Immediate adjustments to be made while awaiting diagnosis<\/li>\n <\/ul>\n <\/div>\n\n <h3>Optimize your consultation with DYNSEO results<\/h3>\n\n <div class=\"conseil-card\">\n <h4>Effectively prepare for your medical consultation<\/h4>\n <p>Bring your printed DYNSEO test results with profile graphs. Prepare a description of the contexts where difficulties manifest (work, home, social) and their duration. Note any family history and strategies already tried. This preparation optimizes the effectiveness of the consultation and reduces the risk of minimizing difficulties.<\/p>\n <\/div>\n\n <h2>7. The institutional diagnostic pathway: steps and costs<\/h2>\n\n <p>Once the decision to consult is made, the diagnostic pathway generally follows a logical progression: primary care consultation (general practitioner), specialized referral if necessary, then in-depth assessment. Understanding this progression helps navigate the healthcare system better and optimizes the chances of obtaining an accurate diagnosis.<\/p>\n\n <p>The costs of a diagnostic assessment vary significantly depending on the type of suspected disorder, the complexity of the case, and the type of facility consulted (public vs private). This variability requires financial planning and an understanding of care modalities.<\/p>\n\n <h3>ADHD diagnostic pathway<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">ADHD PATHWAY<\/div>\n<div class=\"expert-box-title\">Steps of the ADHD diagnosis<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">1\ufe0f\u20e3 First-line consultation<\/div>\n <p><strong>Primary care physician:<\/strong> medical history, elimination of differential diagnoses, specialized referral | <strong>Cost:<\/strong> 25\u20ac (reimbursed) | <strong>Duration:<\/strong> 30-45 min<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">2\ufe0f\u20e3 Specialized consultation<\/div>\n <p><strong>Psychiatrist\/Child psychiatrist:<\/strong> in-depth clinical evaluation, standardized questionnaires | <strong>Cost:<\/strong> 50-120\u20ac (partially reimbursed) | <strong>Duration:<\/strong> 60-90 min<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">3\ufe0f\u20e3 Neuropsychological assessment<\/div>\n <p><strong>Neuropsychologist:<\/strong> comprehensive cognitive tests (CPT, Stroop, WISC\/WAIS) | <strong>Cost:<\/strong> 300-600\u20ac (not reimbursed) | <strong>Duration:<\/strong> 3-4h + feedback<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">4\ufe0f\u20e3 Diagnostic summary<\/div>\n <p><strong>Specialist physician:<\/strong> integration of data, differential diagnosis, care plan | <strong>Cost:<\/strong> 60-100\u20ac | <strong>Duration:<\/strong> 45 min<\/p>\n <\/div>\n <\/div>\n\n <h3>Diagnostic pathway for autism<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-\n<script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@graph\": [\n {\n \"@type\": \"Article\",\n \"@id\": \"https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#article\",\n \"headline\": \"Tests diagnostiques TDAH et 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.key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<p><\/head><br \/>\n<body><\/p>\n<section class=\"article-hero\">\n<div class=\"article-hero-inner\">\n<div class=\"article-breadcrumb\">\n Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests\n <\/div>\n<div class=\"article-category\">\n \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series\n <\/div>\n<h1>ADHD and ASD Diagnostic Tests: <span class=\"hl\">scientific tools<\/span><\/h1>\n<div class=\"article-meta\">\n <span>\ud83d\udcc5 Published in April 2026<\/span><br \/>\n <span>\u23f1\ufe0f 15 min read<\/span><br \/>\n <span>\ud83d\udc65 Parents, professionals, concerned adults<\/span><br \/>\n <span>\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n<\/p><\/div>\n<div class=\"article-hero-curve\"><\/div>\n<\/section>\n<div class=\"article-body\">\n<div class=\"container\">\n<div class=\"intro-block\">\n CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 the diagnostic tests for ADHD and autism are numerous and specific. An accurate diagnosis can transform a life, but it is only possible with the right scientific tools. This comprehensive guide explains the purpose of each diagnostic instrument, the cost of an assessment, their strengths and limitations, and how to start with the free DYNSEO tests before a specialized consultation. Understanding these tools helps parents and concerned adults better navigate the often long and costly diagnostic journey.\n <\/div>\n<div class=\"stats-grid\">\n<div class=\"stat-card\">\n <span class=\"number\">FREE<\/span><br \/>\n <span class=\"label\">The DYNSEO screening tests, available immediately online<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">400\u2013800\u20ac<\/span><br \/>\n <span class=\"label\">Cost of a complete ADHD neuropsychological assessment in practice<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">500\u20131500\u20ac<\/span><br \/>\n <span class=\"label\">Cost of a complete ASD assessment (ADOS-2 + ADI-R + cognitive evaluation)<\/span>\n <\/div>\n<div class=\"stat-card\">\n <span class=\"number\">15+<\/span><br \/>\n <span class=\"label\">Standardized diagnostic tests available for ADHD and ASD<\/span>\n <\/div>\n<\/p><\/div>\n<h2>1. The scientific foundations of neurodevelopmental diagnosis<\/h2>\n<pee>The diagnosis of ADHD and autism spectrum disorders (ASD) is based on a rigorous scientific approach that combines several dimensions of assessment. Contrary to popular belief, it is not a simple clinical observation or professional intuition, but a standardized process using internationally validated instruments.<\/pee>\n<pee>The modern diagnostic approach relies on the principle of data convergence: no single test can establish a diagnosis. It is the consistency between different types of measures – behavioral questionnaires, objective cognitive tests, structured clinical observations, and developmental history – that allows for a reliable diagnosis.<\/pee>\n<pee>This multi-instrumental approach meets a crucial precision requirement: the consequences of an erroneous diagnosis, whether a false positive or a false negative, can be severe for the individual and their family. Over-diagnosis can lead to inappropriate treatments and stigmatization, while under-diagnosis deprives the person of necessary support.<\/pee>\n<div class=\"conseil-card\">\n<h4>Why is standardization essential?<\/h4>\n<pee>Standardized tests allow for comparing an individual’s performance to that of a representative sample of their age group. Without this normative reference, it is impossible to determine whether an observed difficulty is a normal variation in development or a disorder requiring specialized support.<\/pee>\n <\/div>\n<h2>2. Diagnostic tests for ADHD: a multidimensional approach<\/h2>\n<pee>Attention Deficit Hyperactivity Disorder (ADHD) is characterized by persistent difficulties in attention, impulsivity, and sometimes motor hyperactivity. Its diagnosis requires an evaluation that covers three complementary areas: reported behavioral symptoms, objective cognitive performance, and functional analysis of difficulties.<\/pee>\n<pee>The complexity of ADHD lies in its great variability of expression. Some individuals primarily present attentional difficulties (inattentive presentation), others hyperactivity-impulsivity (hyperactive-impulsive presentation), and still others a combination of both (mixed presentation). This diversity necessitates the use of multiple and complementary diagnostic tools.<\/pee>\n<h3>Standardized behavioral questionnaires<\/h3>\n<pee>Behavioral assessment is the first pillar of ADHD diagnosis. It relies on standardized questionnaires that quantify the symptoms observed in different life contexts.<\/pee>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n<div class=\"expert-box-title\">ASRS v1.1 – Adult ADHD Self-Report Scale<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Technical characteristics<\/div>\n<pee><strong>Duration:<\/strong> 5-8 minutes | <strong>Items:<\/strong> 6 key questions | <strong>Population:<\/strong> Adults 18+ years<\/pee>\n <pee>The ASRS was developed by the World Health Organization in collaboration with Harvard University. It is the most widely used adult ADHD screening questionnaire in the world, translated into 35 languages and validated on over 15,000 participants.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Assessed areas<\/div>\n<pee>The questionnaire covers the 18 symptoms of the DSM-5 grouped into two dimensions: inattention (9 items) and hyperactivity-impulsivity (9 items). The 6 questions of the short version correspond to the most predictive symptoms of the diagnosis according to statistical analyses.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Score interpretation<\/div>\n<pee>A score of 4\/6 or more in the “often\/very often” range indicates a high probability of ADHD (sensitivity 68%, specificity 99%). This threshold justifies a specialized consultation for diagnostic confirmation.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n<div class=\"expert-box-title\">Conners Scales – Version 3<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Available versions<\/div>\n<pee><strong>Conners-3 Parents:<\/strong> 27 to 110 items depending on the version | <strong>Conners-3 Teachers:<\/strong> 39 to 59 items | <strong>Conners-3 Self-Report:<\/strong> from 8 years old, 28 to 99 items<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd04 Multi-informant approach<\/div>\n<pee>The strength of the Conners scales lies in their triangular approach. Symptoms reported by parents, teachers, and the child themselves are compared to identify convergences and divergences. This method allows for distinguishing situational difficulties from persistent disorders.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Calculated indices<\/div>\n<pee>The scales provide standardized T scores (mean 50, standard deviation 10) for each dimension: inattention, hyperactivity-impulsivity, learning problems, executive function, aggression, peer relationships. A T score \u2265 65 is considered clinically significant.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Objective cognitive tests for ADHD<\/h3>\n<pee>Beyond behavioral symptoms, ADHD is characterized by measurable alterations in cognitive functions, particularly attentional and executive. Objective cognitive tests allow for precise and reproducible quantification of these difficulties.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">FREE ACCESS DYNSEO<\/div>\n<pee>DYNSEO offers free equivalents of the main ADHD cognitive tests: <strong>Selective Attention Test<\/strong> (CPT paradigm), <strong>Processing Speed Test<\/strong> and <strong>Concentration Test<\/strong>. These tools allow for an initial objective assessment before medical consultation.<\/pee>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Access the free DYNSEO tests<\/a>\n <\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">REFERENCE COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">CPT – Continuous Performance Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Operating principle<\/div>\n<pee>The CPT measures sustained attention and inhibitory control over 15-20 minutes. The participant must quickly respond to target stimuli (letters, numbers, or specific shapes) while ignoring distractors. This seemingly simple task intensely engages the frontal attentional networks.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Measured variables<\/div>\n<pee><strong>Omissions:<\/strong> missed targets (inattention) | <strong>Commissions:<\/strong> false alarms (impulsivity) | <strong>Mean reaction time:<\/strong> processing speed | <strong>Temporal variability:<\/strong> attentional consistency<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd2c Scientific validity<\/div>\n<pee>Over 200 studies validate the use of the CPT in ADHD. Meta-analyses show a moderate to strong effect size (d = 0.5 to 1.2) for differentiating ADHD patients from controls, particularly on reaction time variability.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">EXECUTIVE TEST<\/div>\n<div class=\"expert-box-title\">Stroop Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfa8 Experimental paradigm<\/div>\n<pee>The Stroop test assesses cognitive inhibition by creating a conflict between an automatic response (reading) and a controlled response (color naming). For example, the word “RED” written in blue requires saying “blue” while inhibiting the automatic reading “red”.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Interference Effect<\/div>\n<pee>The Stroop effect is calculated by the difference between reaction times in incongruent versus congruent conditions. In ADHD, this effect is typically increased, reflecting a difficulty in frontal executive control.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83e\udde0 Neurobiological Bases<\/div>\n<pee>Neuroimaging shows that the Stroop test specifically activates the anterior cingulate cortex and the dorsolateral prefrontal cortex, two key regions of executive functions often impaired in ADHD.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Comprehensive cognitive assessment: WISC-V and WAIS-IV<\/h3>\n<pee>The Wechsler scales (WISC-V for children, WAIS-IV for adults) are the reference cognitive assessment in neuropsychology. In the context of ADHD, they help identify characteristic cognitive profiles and quantify the functional impact of attentional difficulties.<\/pee>\n<div class=\"key-points\">\n<h4>Typical ADHD cognitive profile in the Wechsler scales<\/h4>\n<ul>\n<li><strong>Verbal Comprehension:<\/strong> often preserved or high (reflects actual intellectual potential)<\/li>\n<li><strong>Perceptual Reasoning:<\/strong> variable depending on subtests and the presence of hyperactivity<\/li>\n<li><strong>Working Memory:<\/strong> frequently weakened (difficulties in mental manipulation)<\/li>\n<li><strong>Processing Speed:<\/strong> often slowed (inefficiency related to inattention)<\/li>\n<li><strong>“Sawtooth” Pattern:<\/strong> significant gaps between indices (> 15 points)<\/li>\n<\/ul><\/div>\n<pee>This heterogeneous profile is particularly informative as it reveals the dissociation between preserved intellectual abilities and difficulties in cognitive efficiency. A child with a high Verbal IQ but low Processing Speed presents a typical profile requiring specific educational accommodations.<\/pee>\n<h2>3. Diagnostic tests for ASD: structured observation and history taking<\/h2>\n<pee>The diagnosis of Autism Spectrum Disorders relies on a qualitatively different approach than that of ADHD. While ADHD can be partially assessed through standardized cognitive tests, autism requires careful observation of social behaviors, communication, and restricted interests in semi-natural situations.<\/pee>\n<pee>The complexity of the autism spectrum – from Kanner’s autism to Asperger’s syndrome, now unified under the ASD terminology with severity specifiers – necessitates the use of direct observation tools and in-depth anamnesis interviews. These instruments, developed by specialized research teams, allow for standardized assessment of subtle behavioral phenomena.<\/pee>\n<h3>ADOS-2: the gold standard of autistic observation<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">GOLD STANDARD ASD<\/div>\n<div class=\"expert-box-title\">ADOS-2 – Autism Diagnostic Observation Schedule<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udf1f Evaluation Principle<\/div>\n<pee>The ADOS-2 is a semi-structured observation protocol that places the participant in standardized social situations to observe their spontaneous responses. The evaluator proposes specific activities (symbolic play, conversation, collaborative tasks) and codes the quality of social interactions in real-time.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcda Modular Structure<\/div>\n<pee><strong>Toddler Module:<\/strong> 12-30 months | <strong>Module 1:<\/strong> non-verbal or simple phrases | <strong>Module 2:<\/strong> phrastic language | <strong>Module 3:<\/strong> fluent child\/teen language | <strong>Module 4:<\/strong> fluent adult language<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd0d Observed Areas<\/div>\n<pee>The ADOS-2 systematically evaluates: reciprocal social communication, the use and understanding of non-verbal communication, repetitive behaviors and restricted interests, the quality of symbolic and imaginative play, atypical sensory responses.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Scoring and Interpretation<\/div>\n<pee>Each item is scored from 0 (typical behavior) to 3 (very atypical behavior). The scores are converted into two domains: Social Affect and Repetitive Behaviors. The total comparison score determines the classification: ASD, autistic spectrum or non-spectrum.<\/pee>\n <\/div>\n<\/p><\/div>\n<pee>The administration of the ADOS-2 requires specialized training of several days and certification by the test designers. This requirement ensures the standardization of observations but limits its availability to specialized centers with trained professionals.<\/pee>\n<h3>The ADI-R: Structured Developmental History<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">DIAGNOSTIC INTERVIEW<\/div>\n<div class=\"expert-box-title\">ADI-R – Autism Diagnostic Interview Revised<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcda Interview Structure<\/div>\n<pee>The ADI-R is a semi-structured interview lasting 2 to 3 hours conducted with parents or guardians. It systematically explores the developmental history from birth: first social smiles, language development, symbolic play, peer relationships, repetitive behaviors, reactions to changes.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd70\ufe0f Critical Periods Explored<\/div>\n<pee><strong>4-5 years:<\/strong> behaviors at their peak expression | <strong>Current Functioning:<\/strong> evolution and adaptation | <strong>Early Development:<\/strong> 0-36 months (critical period for diagnosis)<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Specific Advantages<\/div>\n<pee>The ADI-R is particularly valuable for the retrospective diagnosis of adults (who have no direct memory of their early development) and for cases where direct observation (ADOS) is difficult to perform or uninformative.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Complementary ASD Assessment Tools<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COMPLEMENTARY SCALE<\/div>\n<div class=\"expert-box-title\">CARS-2 – Childhood Autism Rating Scale<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccf Evaluation Principle<\/div>\n<pee>The CARS-2 rates 15 behavioral domains on a scale from 1 (normal) to 4 (severely atypical). Each domain corresponds to a key characteristic of autism: social relationships, imitation, emotional response, body use, adaptation to change, visual and auditory response.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Practical Advantages<\/div>\n<pee>Its relative speed (15-30 minutes) and simple structure make it a useful first-level tool. It can be administered from the age of 2 and does not require as extensive training as the ADOS-2.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a0\ufe0f Usage Limits<\/div>\n<pee>The CARS-2 is less sensitive to mild profiles (level 1 of the spectrum) and atypical presentations. It serves as a complement but cannot replace the ADOS-2\/ADI-R evaluation for a precise differential diagnosis.<\/pee>\n <\/div>\n<\/p><\/div>\n<h2>4. Detailed Comparison Table: ADHD Tests vs ASD Tests<\/h2>\n<pee>Understanding the differences between ADHD and ASD diagnostic tools helps to better grasp the specifics of each disorder and optimize the diagnostic pathway according to the suspected clinical profile.<\/pee>\n<table>\n<thead>\n<tr>\n<th>Test \/ Tool<\/th>\n<th>Targeted Disorder<\/th>\n<th>Duration<\/th>\n<th>Estimated Cost<\/th>\n<th>Required Training<\/th>\n<th>Who Administers It<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>DYNSEO Online Tests<\/strong><\/td>\n<td>ADHD (screening)<\/td>\n<td>10\u201315 min<\/td>\n<td>Free<\/td>\n<td>None<\/td>\n<td>Self-administration<\/td>\n<\/tr>\n<tr>\n<td><strong>ASRS v1.1<\/strong><\/td>\n<td>Adult ADHD<\/td>\n<td>5 min<\/td>\n<td>Free<\/td>\n<td>None<\/td>\n<td>Self-questionnaire<\/td>\n<\/tr>\n<tr>\n<td><strong>Conners-3<\/strong><\/td>\n<td>Child\/Teen ADHD<\/td>\n<td>15\u201320 min<\/td>\n<td>Includes assessment (50-80\u20ac)<\/td>\n<td>Psychometry Training<\/td>\n<td>Psychologist, Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>CPT \/ TOVA<\/strong><\/td>\n<td>ADHD (all populations)<\/td>\n<td>15\u201321 min<\/td>\n<td>Includes assessment (80-120\u20ac)<\/td>\n<td>Neuropsychology<\/td>\n<td>Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>Stroop Test<\/strong><\/td>\n<td>ADHD, executive functions<\/td>\n<td>5 min<\/td>\n<td>Includes assessment (30-50\u20ac)<\/td>\n<td>Neuropsychology<\/td>\n<td>Neuropsychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>WISC-V \/ WAIS-IV<\/strong><\/td>\n<td>ADHD + ASD (cognitive profile)<\/td>\n<td>90\u2013120 min<\/td>\n<td>Includes assessment (200-300\u20ac)<\/td>\n<td>Advanced Psychometry<\/td>\n<td>Psychologist<\/td>\n<\/tr>\n<tr>\n<td><strong>ADOS-2<\/strong><\/td>\n<td>ASD (gold standard)<\/td>\n<td>45 min<\/td>\n<td>Includes ASD assessment (150-250\u20ac)<\/td>\n<td>ADOS Certification<\/td>\n<td>Certified Clinician<\/td>\n<\/tr>\n<tr>\n<td><strong>ADI-R<\/strong><\/td>\n<td>ASD (anamnestic)<\/td>\n<td>2\u20133h<\/td>\n<td>Includes ASD assessment (200-350\u20ac)<\/td>\n<td>ADI-R Training<\/td>\n<td>Trained Clinician<\/td>\n<\/tr>\n<tr>\n<td><strong>CARS-2<\/strong><\/td>\n<td>ASD (screening)<\/td>\n<td>15\u201330 min<\/td>\n<td>Includes ASD assessment (50-100\u20ac)<\/td>\n<td>Clinical Training<\/td>\n<td>Psychologist, Child Psychiatrist<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>5. DYNSEO Screening Tests: An Accessible First Step<\/h2>\n<pee>Before engaging in a lengthy and costly institutional diagnostic pathway, DYNSEO online tests offer an initial objective and scientifically based approach. These tools, based on validated experimental paradigms, allow for obtaining an initial attentional profile and effectively preparing for a medical consultation.<\/pee>\n<pee>The value of this approach lies in its ability to objectify difficulties that are often hard to describe verbally. Many people experience attention or concentration problems without being able to quantify them precisely. DYNSEO tests provide numerical data comparable to age norms, facilitating communication with healthcare professionals.<\/pee>\n<div class=\"tip-box\">\n<div class=\"tip-box-label\">DYNSEO SCIENTIFIC APPROACH<\/div>\n<pee>All DYNSEO tests are built on experimental paradigms derived from research in cognitive neuropsychology. They measure the same dimensions as clinical tests (sustained attention, selective attention, processing speed, inhibition) with a methodology adapted for online administration.<\/pee>\n <\/div>\n<h3>DYNSEO ADHD Test – Behavioral Screening<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">FREE TEST<\/div>\n<div class=\"expert-box-title\">\ud83c\udfaf DYNSEO ADHD Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccb Test Content<\/div>\n<pee>Evaluation of ADHD symptoms according to DSM-5 criteria through 18 questions covering inattention, hyperactivity, and impulsivity. Each symptom is assessed for its frequency (never, sometimes, often, very often) and its functional impact in different contexts (work, home, social).<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Result Interpretation<\/div>\n<pee>The test generates an overall score and sub-scores by dimension. It indicates the level of probability of ADHD (low, moderate, high) and provides personalized recommendations based on the obtained profile.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Scientific Validity<\/div>\n<pee>Based on an adaptation of the ASRS and Conners scales, validated on a French sample of 2,500 participants. Sensitivity: 82%, Specificity: 76% for clinically confirmed ADHD diagnosis.<\/pee>\n <\/div>\n<pee><a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Take the DYNSEO ADHD test for free<\/a><\/pee>\n <\/div>\n<h3>Selective Attention Test – Online CPT Equivalent<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">\ud83c\udfaf DYNSEO Selective Attention Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a1 Experimental Paradigm<\/div>\n<pee>Continuous vigilance task adapted from the classic CPT: identification of specific targets (shapes, colors, numbers) among distractors over 12 minutes. Measures sustained attention, impulsivity, and attentional variability.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Measured Variables<\/div>\n<pee><strong>Omission Rate:<\/strong> missed targets (inattention) | <strong>Commission Rate:<\/strong> false alarms (impulsivity) | <strong>Mean Reaction Time:<\/strong> processing speed | <strong>RT Variability:<\/strong> attentional consistency<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Attentional Profile<\/div>\n<pee>The test generates a multidimensional attentional profile with comparison to age norms (percentiles). It identifies specific strengths and weaknesses of the attentional system.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Processing Speed Test – Cognitive Efficiency<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n<div class=\"expert-box-title\">\u26a1 DYNSEO Processing Speed Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83e\udde0 Cognitive Principle<\/div>\n<pee>Measures the speed and efficiency of cognitive processing through simple decision tasks (shape matching, visual search, symbolic substitution). Equivalent to the “Processing Speed” subtests of the WAIS-IV.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Calculated indicators<\/div>\n<pee><strong>Processing speed:<\/strong> items\/minute | <strong>Accuracy:<\/strong> % of correct answers | <strong>Efficiency:<\/strong> speed\/accuracy ratio | <strong>Fatigability:<\/strong> performance evolution over time<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Diagnostic utility<\/div>\n<pee>Processing speed is one of the most sensitive indicators for ADHD. A score < 10th percentile suggests a neuropsychological consultation, especially if associated with other cognitive difficulties.<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Concentration and Attention Test – Overall Assessment<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">COMPREHENSIVE ASSESSMENT<\/div>\n<div class=\"expert-box-title\">\ud83d\udcca DYNSEO Concentration and Attention Test<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Multidimensional approach<\/div>\n<pee>Combination of several attentional paradigms (sustained, selective, divided, executive) for a complete attentional profile. Total duration: 25 minutes divided into 6 specialized modules.<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Assessed modules<\/div>\n<pee><strong>Sustained attention:<\/strong> continuous vigilance | <strong>Selective attention:<\/strong> filtering distractors | <strong>Divided attention:<\/strong> dual task | <strong>Flexibility:<\/strong> attentional switching | <strong>Inhibition:<\/strong> impulse control | <strong>Working memory:<\/strong> maintenance and manipulation<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udfaf Synthetic profile<\/div>\n<pee>Generation of a detailed report with standardized scores, profile graphs, normative comparisons, and personalized training or consultation recommendations.<\/pee>\n <\/div>\n<\/p><\/div>\n<div class=\"cta-box\">\n<h3>\ud83c\udfaf Start your assessment with DYNSEO<\/h3>\n<pee>Four complementary tests for an initial objective attentional profile, scientifically validated and completely free. Effectively prepare your medical consultation with concrete data.<\/pee>\n<div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Free DYNSEO Tests<\/a><br \/>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n<\/p><\/div>\n<h2>6. Interpreting results and defining the next steps<\/h2>\n<pee>Interpreting screening test results requires a nuanced approach that takes into account the scores obtained, their consistency with daily difficulties, and contextual factors that may influence performance (fatigue, stress, testing conditions).<\/pee>\n<pee>It is crucial to understand that screening tests, even scientifically validated, do not constitute a diagnosis. They provide objective indicators that guide the necessity or not of a thorough clinical evaluation. This distinction is fundamental to avoid self-diagnosis and ensure appropriate support.<\/pee>\n<h3>DYNSEO Results Interpretation Grid<\/h3>\n<div class=\"key-points\">\n<h4>Score within the norm (> 25th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Attention performance compatible with typical functioning<\/li>\n<li><strong>Recommendations:<\/strong> If difficulties are felt despite good scores, explore other factors (anxiety, sleep, cognitive overload)<\/li>\n<li><strong>Follow-up:<\/strong> Preventive cognitive training, optimized lifestyle<\/li>\n<li><strong>Consultation:<\/strong> Necessary only if symptoms persist and impact functioning<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Slightly low score (10-25th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Mild to moderate attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Targeted cognitive training, environmental adjustments<\/li>\n<li><strong>Follow-up:<\/strong> Reassessment after 6-8 weeks of training<\/li>\n<li><strong>Consultation:<\/strong> Advised if difficulties disrupt professional\/school daily life<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Low score (5-10th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Significant attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Medical consultation recommended (general practitioner \u2192 specialist)<\/li>\n<li><strong>Follow-up:<\/strong> Comprehensive neuropsychological assessment potentially indicated<\/li>\n<li><strong>Documentation:<\/strong> Bring DYNSEO results to the consultation<\/li>\n<\/ul><\/div>\n<div class=\"key-points\">\n<h4>Very low score (< 5th percentile)<\/h4>\n<ul>\n<li><strong>Meaning:<\/strong> Severe attention difficulties<\/li>\n<li><strong>Recommendations:<\/strong> Specialized consultation without delay (neuropsychologist, psychiatrist)<\/li>\n<li><strong>Urgency:<\/strong> Particularly if associated with significant functional impact<\/li>\n<li><strong>Support:<\/strong> Immediate adjustments to be made while awaiting diagnosis<\/li>\n<\/ul><\/div>\n<h3>Optimize your consultation with DYNSEO results<\/h3>\n<div class=\"conseil-card\">\n<h4>Effectively prepare for your medical consultation<\/h4>\n<pee>Bring your printed DYNSEO test results with profile graphs. Prepare a description of the contexts where difficulties manifest (work, home, social) and their duration. Note any family history and strategies already tried. This preparation optimizes the effectiveness of the consultation and reduces the risk of minimizing difficulties.<\/pee>\n <\/div>\n<h2>7. The institutional diagnostic pathway: steps and costs<\/h2>\n<pee>Once the decision to consult is made, the diagnostic pathway generally follows a logical progression: primary care consultation (general practitioner), specialized referral if necessary, then in-depth assessment. Understanding this progression helps navigate the healthcare system better and optimizes the chances of obtaining an accurate diagnosis.<\/pee>\n<pee>The costs of a diagnostic assessment vary significantly depending on the type of suspected disorder, the complexity of the case, and the type of facility consulted (public vs private). This variability requires financial planning and an understanding of care modalities.<\/pee>\n<h3>ADHD diagnostic pathway<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-label\">ADHD PATHWAY<\/div>\n<div class=\"expert-box-title\">Steps of the ADHD diagnosis<\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">1\ufe0f\u20e3 First-line consultation<\/div>\n<pee><strong>Primary care physician:<\/strong> medical history, elimination of differential diagnoses, specialized referral | <strong>Cost:<\/strong> 25\u20ac (reimbursed) | <strong>Duration:<\/strong> 30-45 min<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">2\ufe0f\u20e3 Specialized consultation<\/div>\n<pee><strong>Psychiatrist\/Child psychiatrist:<\/strong> in-depth clinical evaluation, standardized questionnaires | <strong>Cost:<\/strong> 50-120\u20ac (partially reimbursed) | <strong>Duration:<\/strong> 60-90 min<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">3\ufe0f\u20e3 Neuropsychological assessment<\/div>\n<pee><strong>Neuropsychologist:<\/strong> comprehensive cognitive tests (CPT, Stroop, WISC\/WAIS) | <strong>Cost:<\/strong> 300-600\u20ac (not reimbursed) | <strong>Duration:<\/strong> 3-4h + feedback<\/pee>\n <\/div>\n<div class=\"expert-inner\">\n<div class=\"expert-inner-title\">4\ufe0f\u20e3 Diagnostic summary<\/div>\n<pee><strong>Specialist physician:<\/strong> integration of data, differential diagnosis, care plan | <strong>Cost:<\/strong> 60-100\u20ac | <strong>Duration:<\/strong> 45 min<\/pee>\n <\/div>\n<\/p><\/div>\n<h3>Diagnostic pathway for autism<\/h3>\n<div class=\"expert-box\">\n<div class=\"expert-box-\n<script type=\"application\/ld+json\">\n{\n “@context”: “https:\/\/schema.org”,\n “@graph”: [\n {\n “@type”: “Article”,\n “@id”: “https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#article”,\n “headline”: “Tests diagnostiques TDAH et TSA : outils 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{\n “@type”: “ListItem”,\n “position”: 2,\n “name”: “Blog”,\n “item”: “https:\/\/www.dynseo.com\/blog”\n },\n {\n “@type”: “ListItem”,\n “position”: 3,\n “name”: “Tests diagnostiques TDAH et TSA : outils scientifiques | DYNSEO”\n }\n ]\n },\n {\n “@type”: “FAQPage”,\n “@id”: “https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#faq”,\n “mainEntity”: [\n {\n “@type”: “Question”,\n “name”: “Quels sont les outils de diagnostic pour le TDAH ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Les outils de diagnostic pour le TDAH incluent des \u00e9chelles d’\u00e9valuation standardis\u00e9es, des tests neuropsychologiques et des observations comportementales r\u00e9alis\u00e9s par des professionnels de sant\u00e9 qualifi\u00e9s.”\n }\n },\n {\n “@type”: “Question”,\n “name”: “Comment diagnostique-t-on les troubles du spectre autistique (TSA) ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Le diagnostic des TSA s’appuie sur des outils scientifiques comme l’ADOS-2, l’ADI-R et des \u00e9valuations multidisciplinaires incluant psychologues, psychiatres et orthophonistes sp\u00e9cialis\u00e9s.”\n }\n },\n {\n “@type”: “Question”,\n “name”: “\u00c0 quel \u00e2ge peut-on diagnostiquer le TDAH et les TSA ?”,\n “acceptedAnswer”: {\n “@type”: “Answer”,\n “text”: “Les TSA peuvent \u00eatre diagnostiqu\u00e9s d\u00e8s l’\u00e2ge de 18 mois, tandis que le TDAH est g\u00e9n\u00e9ralement diagnostiqu\u00e9 \u00e0 partir de 6 ans, bien que les premiers signes puissent appara\u00eetre plus t\u00f4t.”\n }\n }\n ]\n }\n ]\n}\n<\/script>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tests diagnostiques TDAH et TSA : outils scientifiques | DYNSEO Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series ADHD and ASD Diagnostic Tests: scientific tools \ud83d\udcc5 Published in April 2026 \u23f1\ufe0f 15 min read \ud83d\udc65 Parents, professionals, concerned adults \u2b50 4.8\/5 (127 reviews) CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 […]<\/p>\n","protected":false},"author":4,"featured_media":100456,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"[et_pb_section fb_built=\"1\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_row _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" column_structure=\"4_4\" global_colors_info=\"{}\"][et_pb_column type=\"4_4\" _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"][et_pb_code _builder_version=\"4.16\" custom_padding=\"0px|0px|0px|0px|false|false\" global_colors_info=\"{}\"]<!DOCTYPE html>\n<html lang=\"fr\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n 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16px !important;\n }\n \n table, th, td {\n font-size: 0.9rem;\n }\n }\n \n @media (max-width: 400px) {\n .article-hero h1 {\n font-size: 1.4rem !important;\n }\n \n h2 {\n font-size: 1.3rem !important;\n }\n \n .stat-card .number {\n font-size: 1.8rem;\n }\n \n .btn-white, .btn-outline {\n padding: 12px 20px;\n font-size: 0.9rem;\n }\n }\n \n\n<style>\n\/* DAG-RESPONSIVE-FIX *\/\n@media (max-width: 768px) {\n p, li { text-align: left !important; word-spacing: normal !important; hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }\n .container { padding: 12px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 18px 16px !important;\n margin-left: 0 !important;\n margin-right: 0 !important;\n }\n .stats-grid { grid-template-columns: 1fr !important; }\n .article-hero h1 { font-size: 1.6rem !important; line-height: 1.3 !important; }\n h2 { font-size: 1.5rem !important; }\n .cta-buttons { flex-direction: column !important; }\n .article-hero-inner { padding: 30px 16px !important; }\n}\n@media (max-width: 400px) {\n p, li { font-size: 15px !important; line-height: 1.6 !important; }\n .container { padding: 8px !important; }\n .intro-block, .conseil-card, .tip-box, .expert-box,\n .key-points, .faq-item, .stat-card, .cta-box {\n padding: 14px 12px !important;\n }\n .article-hero h1 { font-size: 1.4rem !important; }\n h2 { font-size: 1.3rem !important; }\n .stat-card .number { font-size: 28px !important; }\n}\n<\/style>\n<\/style>\n<\/head>\n<body><section class=\"article-hero\">\n <div class=\"article-hero-inner\">\n <div class=\"article-breadcrumb\">\n Home \u203a Neurodevelopmental disorders \u203a Diagnostic tests\n <\/div>\n \n <div class=\"article-category\">\n \ud83e\udde9 Neurodevelopment \u2014 ADHD & ASD Series\n <\/div>\n \n <h1>ADHD and ASD Diagnostic Tests: <span class=\"hl\">scientific tools<\/span><\/h1>\n \n <div class=\"article-meta\">\n <span>\ud83d\udcc5 Published in April 2026<\/span>\n <span>\u23f1\ufe0f 15 min read<\/span>\n <span>\ud83d\udc65 Parents, professionals, concerned adults<\/span>\n <span>\u2b50 4.8\/5 (127 reviews)<\/span>\n <\/div>\n <\/div>\n <div class=\"article-hero-curve\"><\/div>\n <\/section>\n\n <div class=\"article-body\">\n <div class=\"container\">\n<div class=\"intro-block\">\n CPT, Stroop, Conners, ADOS-2, ADI-R \u2014 the diagnostic tests for ADHD and autism are numerous and specific. An accurate diagnosis can transform a life, but it is only possible with the right scientific tools. This comprehensive guide explains the purpose of each diagnostic instrument, the cost of an assessment, their strengths and limitations, and how to start with the free DYNSEO tests before a specialized consultation. Understanding these tools helps parents and concerned adults better navigate the often long and costly diagnostic journey.\n <\/div>\n\n <div class=\"stats-grid\">\n <div class=\"stat-card\">\n <span class=\"number\">FREE<\/span>\n <span class=\"label\">The DYNSEO screening tests, available immediately online<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">400\u2013800\u20ac<\/span>\n <span class=\"label\">Cost of a complete ADHD neuropsychological assessment in practice<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">500\u20131500\u20ac<\/span>\n <span class=\"label\">Cost of a complete ASD assessment (ADOS-2 + ADI-R + cognitive evaluation)<\/span>\n <\/div>\n <div class=\"stat-card\">\n <span class=\"number\">15+<\/span>\n <span class=\"label\">Standardized diagnostic tests available for ADHD and ASD<\/span>\n <\/div>\n <\/div>\n\n <h2>1. The scientific foundations of neurodevelopmental diagnosis<\/h2>\n \n <p>The diagnosis of ADHD and autism spectrum disorders (ASD) is based on a rigorous scientific approach that combines several dimensions of assessment. Contrary to popular belief, it is not a simple clinical observation or professional intuition, but a standardized process using internationally validated instruments.<\/p>\n\n <p>The modern diagnostic approach relies on the principle of data convergence: no single test can establish a diagnosis. It is the consistency between different types of measures - behavioral questionnaires, objective cognitive tests, structured clinical observations, and developmental history - that allows for a reliable diagnosis.<\/p>\n\n <p>This multi-instrumental approach meets a crucial precision requirement: the consequences of an erroneous diagnosis, whether a false positive or a false negative, can be severe for the individual and their family. Over-diagnosis can lead to inappropriate treatments and stigmatization, while under-diagnosis deprives the person of necessary support.<\/p>\n<div class=\"conseil-card\">\n <h4>Why is standardization essential?<\/h4>\n <p>Standardized tests allow for comparing an individual's performance to that of a representative sample of their age group. Without this normative reference, it is impossible to determine whether an observed difficulty is a normal variation in development or a disorder requiring specialized support.<\/p>\n <\/div>\n\n <h2>2. Diagnostic tests for ADHD: a multidimensional approach<\/h2>\n\n <p>Attention Deficit Hyperactivity Disorder (ADHD) is characterized by persistent difficulties in attention, impulsivity, and sometimes motor hyperactivity. Its diagnosis requires an evaluation that covers three complementary areas: reported behavioral symptoms, objective cognitive performance, and functional analysis of difficulties.<\/p>\n\n <p>The complexity of ADHD lies in its great variability of expression. Some individuals primarily present attentional difficulties (inattentive presentation), others hyperactivity-impulsivity (hyperactive-impulsive presentation), and still others a combination of both (mixed presentation). This diversity necessitates the use of multiple and complementary diagnostic tools.<\/p>\n\n <h3>Standardized behavioral questionnaires<\/h3>\n\n <p>Behavioral assessment is the first pillar of ADHD diagnosis. It relies on standardized questionnaires that quantify the symptoms observed in different life contexts.<\/p>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n <div class=\"expert-box-title\">ASRS v1.1 - Adult ADHD Self-Report Scale<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Technical characteristics<\/div>\n <p><strong>Duration:<\/strong> 5-8 minutes | <strong>Items:<\/strong> 6 key questions | <strong>Population:<\/strong> Adults 18+ years<\/p>\n <p>The ASRS was developed by the World Health Organization in collaboration with Harvard University. It is the most widely used adult ADHD screening questionnaire in the world, translated into 35 languages and validated on over 15,000 participants.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Assessed areas<\/div>\n <p>The questionnaire covers the 18 symptoms of the DSM-5 grouped into two dimensions: inattention (9 items) and hyperactivity-impulsivity (9 items). The 6 questions of the short version correspond to the most predictive symptoms of the diagnosis according to statistical analyses.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Score interpretation<\/div>\n <p>A score of 4\/6 or more in the \"often\/very often\" range indicates a high probability of ADHD (sensitivity 68%, specificity 99%). This threshold justifies a specialized consultation for diagnostic confirmation.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC TOOL<\/div>\n <div class=\"expert-box-title\">Conners Scales - Version 3<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Available versions<\/div>\n <p><strong>Conners-3 Parents:<\/strong> 27 to 110 items depending on the version | <strong>Conners-3 Teachers:<\/strong> 39 to 59 items | <strong>Conners-3 Self-Report:<\/strong> from 8 years old, 28 to 99 items<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udd04 Multi-informant approach<\/div>\n <p>The strength of the Conners scales lies in their triangular approach. Symptoms reported by parents, teachers, and the child themselves are compared to identify convergences and divergences. This method allows for distinguishing situational difficulties from persistent disorders.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Calculated indices<\/div>\n <p>The scales provide standardized T scores (mean 50, standard deviation 10) for each dimension: inattention, hyperactivity-impulsivity, learning problems, executive function, aggression, peer relationships. A T score \u2265 65 is considered clinically significant.<\/p>\n <\/div>\n <\/div>\n\n <h3>Objective cognitive tests for ADHD<\/h3>\n\n <p>Beyond behavioral symptoms, ADHD is characterized by measurable alterations in cognitive functions, particularly attentional and executive. Objective cognitive tests allow for precise and reproducible quantification of these difficulties.<\/p>\n\n <div class=\"tip-box\">\n <div class=\"tip-box-label\">FREE ACCESS DYNSEO<\/div>\n <p>DYNSEO offers free equivalents of the main ADHD cognitive tests: <strong>Selective Attention Test<\/strong> (CPT paradigm), <strong>Processing Speed Test<\/strong> and <strong>Concentration Test<\/strong>. These tools allow for an initial objective assessment before medical consultation.<\/p>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Access the free DYNSEO tests<\/a>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">REFERENCE COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">CPT - Continuous Performance Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Operating principle<\/div>\n <p>The CPT measures sustained attention and inhibitory control over 15-20 minutes. The participant must quickly respond to target stimuli (letters, numbers, or specific shapes) while ignoring distractors. This seemingly simple task intensely engages the frontal attentional networks.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Measured variables<\/div>\n <p><strong>Omissions:<\/strong> missed targets (inattention) | <strong>Commissions:<\/strong> false alarms (impulsivity) | <strong>Mean reaction time:<\/strong> processing speed | <strong>Temporal variability:<\/strong> attentional consistency<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd2c Scientific validity<\/div>\n <p>Over 200 studies validate the use of the CPT in ADHD. Meta-analyses show a moderate to strong effect size (d = 0.5 to 1.2) for differentiating ADHD patients from controls, particularly on reaction time variability.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">EXECUTIVE TEST<\/div>\n <div class=\"expert-box-title\">Stroop Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfa8 Experimental paradigm<\/div>\n <p>The Stroop test assesses cognitive inhibition by creating a conflict between an automatic response (reading) and a controlled response (color naming). For example, the word \"RED\" written in blue requires saying \"blue\" while inhibiting the automatic reading \"red\".<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcc8 Interference Effect<\/div>\n <p>The Stroop effect is calculated by the difference between reaction times in incongruent versus congruent conditions. In ADHD, this effect is typically increased, reflecting a difficulty in frontal executive control.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83e\udde0 Neurobiological Bases<\/div>\n <p>Neuroimaging shows that the Stroop test specifically activates the anterior cingulate cortex and the dorsolateral prefrontal cortex, two key regions of executive functions often impaired in ADHD.<\/p>\n <\/div>\n <\/div>\n\n <h3>Comprehensive cognitive assessment: WISC-V and WAIS-IV<\/h3>\n\n <p>The Wechsler scales (WISC-V for children, WAIS-IV for adults) are the reference cognitive assessment in neuropsychology. In the context of ADHD, they help identify characteristic cognitive profiles and quantify the functional impact of attentional difficulties.<\/p>\n\n <div class=\"key-points\">\n <h4>Typical ADHD cognitive profile in the Wechsler scales<\/h4>\n <ul>\n <li><strong>Verbal Comprehension:<\/strong> often preserved or high (reflects actual intellectual potential)<\/li>\n <li><strong>Perceptual Reasoning:<\/strong> variable depending on subtests and the presence of hyperactivity<\/li>\n <li><strong>Working Memory:<\/strong> frequently weakened (difficulties in mental manipulation)<\/li>\n <li><strong>Processing Speed:<\/strong> often slowed (inefficiency related to inattention)<\/li>\n <li><strong>\"Sawtooth\" Pattern:<\/strong> significant gaps between indices (> 15 points)<\/li>\n <\/ul>\n <\/div>\n\n <p>This heterogeneous profile is particularly informative as it reveals the dissociation between preserved intellectual abilities and difficulties in cognitive efficiency. A child with a high Verbal IQ but low Processing Speed presents a typical profile requiring specific educational accommodations.<\/p>\n\n <h2>3. Diagnostic tests for ASD: structured observation and history taking<\/h2>\n\n <p>The diagnosis of Autism Spectrum Disorders relies on a qualitatively different approach than that of ADHD. While ADHD can be partially assessed through standardized cognitive tests, autism requires careful observation of social behaviors, communication, and restricted interests in semi-natural situations.<\/p>\n\n <p>The complexity of the autism spectrum - from Kanner's autism to Asperger's syndrome, now unified under the ASD terminology with severity specifiers - necessitates the use of direct observation tools and in-depth anamnesis interviews. These instruments, developed by specialized research teams, allow for standardized assessment of subtle behavioral phenomena.<\/p>\n\n <h3>ADOS-2: the gold standard of autistic observation<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">GOLD STANDARD ASD<\/div>\n <div class=\"expert-box-title\">ADOS-2 - Autism Diagnostic Observation Schedule<\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83c\udf1f Evaluation Principle<\/div>\n <p>The ADOS-2 is a semi-structured observation protocol that places the participant in standardized social situations to observe their spontaneous responses. The evaluator proposes specific activities (symbolic play, conversation, collaborative tasks) and codes the quality of social interactions in real-time.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcda Modular Structure<\/div>\n <p><strong>Toddler Module:<\/strong> 12-30 months | <strong>Module 1:<\/strong> non-verbal or simple phrases | <strong>Module 2:<\/strong> phrastic language | <strong>Module 3:<\/strong> fluent child\/teen language | <strong>Module 4:<\/strong> fluent adult language<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd0d Observed Areas<\/div>\n <p>The ADOS-2 systematically evaluates: reciprocal social communication, the use and understanding of non-verbal communication, repetitive behaviors and restricted interests, the quality of symbolic and imaginative play, atypical sensory responses.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Scoring and Interpretation<\/div>\n <p>Each item is scored from 0 (typical behavior) to 3 (very atypical behavior). The scores are converted into two domains: Social Affect and Repetitive Behaviors. The total comparison score determines the classification: ASD, autistic spectrum or non-spectrum.<\/p>\n <\/div>\n <\/div>\n\n <p>The administration of the ADOS-2 requires specialized training of several days and certification by the test designers. This requirement ensures the standardization of observations but limits its availability to specialized centers with trained professionals.<\/p>\n\n <h3>The ADI-R: Structured Developmental History<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">DIAGNOSTIC INTERVIEW<\/div>\n <div class=\"expert-box-title\">ADI-R - Autism Diagnostic Interview Revised<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcda Interview Structure<\/div>\n <p>The ADI-R is a semi-structured interview lasting 2 to 3 hours conducted with parents or guardians. It systematically explores the developmental history from birth: first social smiles, language development, symbolic play, peer relationships, repetitive behaviors, reactions to changes.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udd70\ufe0f Critical Periods Explored<\/div>\n <p><strong>4-5 years:<\/strong> behaviors at their peak expression | <strong>Current Functioning:<\/strong> evolution and adaptation | <strong>Early Development:<\/strong> 0-36 months (critical period for diagnosis)<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Specific Advantages<\/div>\n <p>The ADI-R is particularly valuable for the retrospective diagnosis of adults (who have no direct memory of their early development) and for cases where direct observation (ADOS) is difficult to perform or uninformative.<\/p>\n <\/div>\n <\/div>\n\n <h3>Complementary ASD Assessment Tools<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COMPLEMENTARY SCALE<\/div>\n <div class=\"expert-box-title\">CARS-2 - Childhood Autism Rating Scale<\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udccf Evaluation Principle<\/div>\n <p>The CARS-2 rates 15 behavioral domains on a scale from 1 (normal) to 4 (severely atypical). Each domain corresponds to a key characteristic of autism: social relationships, imitation, emotional response, body use, adaptation to change, visual and auditory response.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Practical Advantages<\/div>\n <p>Its relative speed (15-30 minutes) and simple structure make it a useful first-level tool. It can be administered from the age of 2 and does not require as extensive training as the ADOS-2.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\u26a0\ufe0f Usage Limits<\/div>\n <p>The CARS-2 is less sensitive to mild profiles (level 1 of the spectrum) and atypical presentations. It serves as a complement but cannot replace the ADOS-2\/ADI-R evaluation for a precise differential diagnosis.<\/p>\n <\/div>\n <\/div>\n\n <h2>4. Detailed Comparison Table: ADHD Tests vs ASD Tests<\/h2>\n\n <p>Understanding the differences between ADHD and ASD diagnostic tools helps to better grasp the specifics of each disorder and optimize the diagnostic pathway according to the suspected clinical profile.<\/p>\n\n <table>\n <thead>\n <tr>\n <th>Test \/ Tool<\/th>\n <th>Targeted Disorder<\/th>\n <th>Duration<\/th>\n <th>Estimated Cost<\/th>\n <th>Required Training<\/th>\n <th>Who Administers It<\/th>\n <\/tr>\n <\/thead>\n <tbody>\n <tr>\n <td><strong>DYNSEO Online Tests<\/strong><\/td>\n <td>ADHD (screening)<\/td>\n <td>10\u201315 min<\/td>\n <td>Free<\/td>\n <td>None<\/td>\n <td>Self-administration<\/td>\n <\/tr>\n <tr>\n <td><strong>ASRS v1.1<\/strong><\/td>\n <td>Adult ADHD<\/td>\n <td>5 min<\/td>\n <td>Free<\/td>\n <td>None<\/td>\n <td>Self-questionnaire<\/td>\n <\/tr>\n <tr>\n <td><strong>Conners-3<\/strong><\/td>\n <td>Child\/Teen ADHD<\/td>\n <td>15\u201320 min<\/td>\n <td>Includes assessment (50-80\u20ac)<\/td>\n <td>Psychometry Training<\/td>\n <td>Psychologist, Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>CPT \/ TOVA<\/strong><\/td>\n <td>ADHD (all populations)<\/td>\n <td>15\u201321 min<\/td>\n <td>Includes assessment (80-120\u20ac)<\/td>\n <td>Neuropsychology<\/td>\n <td>Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>Stroop Test<\/strong><\/td>\n <td>ADHD, executive functions<\/td>\n <td>5 min<\/td>\n <td>Includes assessment (30-50\u20ac)<\/td>\n <td>Neuropsychology<\/td>\n <td>Neuropsychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>WISC-V \/ WAIS-IV<\/strong><\/td>\n <td>ADHD + ASD (cognitive profile)<\/td>\n <td>90\u2013120 min<\/td>\n <td>Includes assessment (200-300\u20ac)<\/td>\n <td>Advanced Psychometry<\/td>\n <td>Psychologist<\/td>\n <\/tr>\n <tr>\n <td><strong>ADOS-2<\/strong><\/td>\n <td>ASD (gold standard)<\/td>\n <td>45 min<\/td>\n <td>Includes ASD assessment (150-250\u20ac)<\/td>\n <td>ADOS Certification<\/td>\n <td>Certified Clinician<\/td>\n <\/tr>\n <tr>\n <td><strong>ADI-R<\/strong><\/td>\n <td>ASD (anamnestic)<\/td>\n <td>2\u20133h<\/td>\n <td>Includes ASD assessment (200-350\u20ac)<\/td>\n <td>ADI-R Training<\/td>\n <td>Trained Clinician<\/td>\n <\/tr>\n <tr>\n <td><strong>CARS-2<\/strong><\/td>\n <td>ASD (screening)<\/td>\n <td>15\u201330 min<\/td>\n <td>Includes ASD assessment (50-100\u20ac)<\/td>\n <td>Clinical Training<\/td>\n <td>Psychologist, Child Psychiatrist<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n\n <h2>5. DYNSEO Screening Tests: An Accessible First Step<\/h2>\n\n <p>Before engaging in a lengthy and costly institutional diagnostic pathway, DYNSEO online tests offer an initial objective and scientifically based approach. These tools, based on validated experimental paradigms, allow for obtaining an initial attentional profile and effectively preparing for a medical consultation.<\/p>\n\n <p>The value of this approach lies in its ability to objectify difficulties that are often hard to describe verbally. Many people experience attention or concentration problems without being able to quantify them precisely. DYNSEO tests provide numerical data comparable to age norms, facilitating communication with healthcare professionals.<\/p>\n<div class=\"tip-box\">\n <div class=\"tip-box-label\">DYNSEO SCIENTIFIC APPROACH<\/div>\n <p>All DYNSEO tests are built on experimental paradigms derived from research in cognitive neuropsychology. They measure the same dimensions as clinical tests (sustained attention, selective attention, processing speed, inhibition) with a methodology adapted for online administration.<\/p>\n <\/div>\n\n <h3>DYNSEO ADHD Test - Behavioral Screening<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">FREE TEST<\/div>\n <div class=\"expert-box-title\">\ud83c\udfaf DYNSEO ADHD Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udccb Test Content<\/div>\n <p>Evaluation of ADHD symptoms according to DSM-5 criteria through 18 questions covering inattention, hyperactivity, and impulsivity. Each symptom is assessed for its frequency (never, sometimes, often, very often) and its functional impact in different contexts (work, home, social).<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Result Interpretation<\/div>\n <p>The test generates an overall score and sub-scores by dimension. It indicates the level of probability of ADHD (low, moderate, high) and provides personalized recommendations based on the obtained profile.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcca Scientific Validity<\/div>\n <p>Based on an adaptation of the ASRS and Conners scales, validated on a French sample of 2,500 participants. Sensitivity: 82%, Specificity: 76% for clinically confirmed ADHD diagnosis.<\/p>\n <\/div>\n <p><a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" style=\"color: #5e5ed7; font-weight: 600;\">\u2192 Take the DYNSEO ADHD test for free<\/a><\/p>\n <\/div>\n\n <h3>Selective Attention Test - Online CPT Equivalent<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">\ud83c\udfaf DYNSEO Selective Attention Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\u26a1 Experimental Paradigm<\/div>\n <p>Continuous vigilance task adapted from the classic CPT: identification of specific targets (shapes, colors, numbers) among distractors over 12 minutes. Measures sustained attention, impulsivity, and attentional variability.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Measured Variables<\/div>\n <p><strong>Omission Rate:<\/strong> missed targets (inattention) | <strong>Commission Rate:<\/strong> false alarms (impulsivity) | <strong>Mean Reaction Time:<\/strong> processing speed | <strong>RT Variability:<\/strong> attentional consistency<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Attentional Profile<\/div>\n <p>The test generates a multidimensional attentional profile with comparison to age norms (percentiles). It identifies specific strengths and weaknesses of the attentional system.<\/p>\n <\/div>\n <\/div>\n\n <h3>Processing Speed Test - Cognitive Efficiency<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COGNITIVE TEST<\/div>\n <div class=\"expert-box-title\">\u26a1 DYNSEO Processing Speed Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83e\udde0 Cognitive Principle<\/div>\n <p>Measures the speed and efficiency of cognitive processing through simple decision tasks (shape matching, visual search, symbolic substitution). Equivalent to the \"Processing Speed\" subtests of the WAIS-IV.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n<div class=\"expert-inner-title\">\ud83d\udcca Calculated indicators<\/div>\n <p><strong>Processing speed:<\/strong> items\/minute | <strong>Accuracy:<\/strong> % of correct answers | <strong>Efficiency:<\/strong> speed\/accuracy ratio | <strong>Fatigability:<\/strong> performance evolution over time<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Diagnostic utility<\/div>\n <p>Processing speed is one of the most sensitive indicators for ADHD. A score < 10th percentile suggests a neuropsychological consultation, especially if associated with other cognitive difficulties.<\/p>\n <\/div>\n <\/div>\n\n <h3>Concentration and Attention Test - Overall Assessment<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">COMPREHENSIVE ASSESSMENT<\/div>\n <div class=\"expert-box-title\">\ud83d\udcca DYNSEO Concentration and Attention Test<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Multidimensional approach<\/div>\n <p>Combination of several attentional paradigms (sustained, selective, divided, executive) for a complete attentional profile. Total duration: 25 minutes divided into 6 specialized modules.<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83d\udcc8 Assessed modules<\/div>\n <p><strong>Sustained attention:<\/strong> continuous vigilance | <strong>Selective attention:<\/strong> filtering distractors | <strong>Divided attention:<\/strong> dual task | <strong>Flexibility:<\/strong> attentional switching | <strong>Inhibition:<\/strong> impulse control | <strong>Working memory:<\/strong> maintenance and manipulation<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">\ud83c\udfaf Synthetic profile<\/div>\n <p>Generation of a detailed report with standardized scores, profile graphs, normative comparisons, and personalized training or consultation recommendations.<\/p>\n <\/div>\n <\/div>\n\n <div class=\"cta-box\">\n <h3>\ud83c\udfaf Start your assessment with DYNSEO<\/h3>\n <p>Four complementary tests for an initial objective attentional profile, scientifically validated and completely free. Effectively prepare your medical consultation with concrete data.<\/p>\n <div class=\"cta-buttons\">\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-white\">Free DYNSEO Tests<\/a>\n <a href=\"https:\/\/www.dynseo.com\/en\/brain-games-apps\/coco-educational-games\/\" class=\"btn-outline\">Learn more<\/a>\n <\/div>\n <\/div>\n\n <h2>6. Interpreting results and defining the next steps<\/h2>\n\n <p>Interpreting screening test results requires a nuanced approach that takes into account the scores obtained, their consistency with daily difficulties, and contextual factors that may influence performance (fatigue, stress, testing conditions).<\/p>\n\n <p>It is crucial to understand that screening tests, even scientifically validated, do not constitute a diagnosis. They provide objective indicators that guide the necessity or not of a thorough clinical evaluation. This distinction is fundamental to avoid self-diagnosis and ensure appropriate support.<\/p>\n\n <h3>DYNSEO Results Interpretation Grid<\/h3>\n<div class=\"key-points\">\n <h4>Score within the norm (> 25th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Attention performance compatible with typical functioning<\/li>\n <li><strong>Recommendations:<\/strong> If difficulties are felt despite good scores, explore other factors (anxiety, sleep, cognitive overload)<\/li>\n <li><strong>Follow-up:<\/strong> Preventive cognitive training, optimized lifestyle<\/li>\n <li><strong>Consultation:<\/strong> Necessary only if symptoms persist and impact functioning<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Slightly low score (10-25th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Mild to moderate attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Targeted cognitive training, environmental adjustments<\/li>\n <li><strong>Follow-up:<\/strong> Reassessment after 6-8 weeks of training<\/li>\n <li><strong>Consultation:<\/strong> Advised if difficulties disrupt professional\/school daily life<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Low score (5-10th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Significant attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Medical consultation recommended (general practitioner \u2192 specialist)<\/li>\n <li><strong>Follow-up:<\/strong> Comprehensive neuropsychological assessment potentially indicated<\/li>\n <li><strong>Documentation:<\/strong> Bring DYNSEO results to the consultation<\/li>\n <\/ul>\n <\/div>\n\n <div class=\"key-points\">\n <h4>Very low score (< 5th percentile)<\/h4>\n <ul>\n <li><strong>Meaning:<\/strong> Severe attention difficulties<\/li>\n <li><strong>Recommendations:<\/strong> Specialized consultation without delay (neuropsychologist, psychiatrist)<\/li>\n <li><strong>Urgency:<\/strong> Particularly if associated with significant functional impact<\/li>\n <li><strong>Support:<\/strong> Immediate adjustments to be made while awaiting diagnosis<\/li>\n <\/ul>\n <\/div>\n\n <h3>Optimize your consultation with DYNSEO results<\/h3>\n\n <div class=\"conseil-card\">\n <h4>Effectively prepare for your medical consultation<\/h4>\n <p>Bring your printed DYNSEO test results with profile graphs. Prepare a description of the contexts where difficulties manifest (work, home, social) and their duration. Note any family history and strategies already tried. This preparation optimizes the effectiveness of the consultation and reduces the risk of minimizing difficulties.<\/p>\n <\/div>\n\n <h2>7. The institutional diagnostic pathway: steps and costs<\/h2>\n\n <p>Once the decision to consult is made, the diagnostic pathway generally follows a logical progression: primary care consultation (general practitioner), specialized referral if necessary, then in-depth assessment. Understanding this progression helps navigate the healthcare system better and optimizes the chances of obtaining an accurate diagnosis.<\/p>\n\n <p>The costs of a diagnostic assessment vary significantly depending on the type of suspected disorder, the complexity of the case, and the type of facility consulted (public vs private). This variability requires financial planning and an understanding of care modalities.<\/p>\n\n <h3>ADHD diagnostic pathway<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-label\">ADHD PATHWAY<\/div>\n<div class=\"expert-box-title\">Steps of the ADHD diagnosis<\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">1\ufe0f\u20e3 First-line consultation<\/div>\n <p><strong>Primary care physician:<\/strong> medical history, elimination of differential diagnoses, specialized referral | <strong>Cost:<\/strong> 25\u20ac (reimbursed) | <strong>Duration:<\/strong> 30-45 min<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">2\ufe0f\u20e3 Specialized consultation<\/div>\n <p><strong>Psychiatrist\/Child psychiatrist:<\/strong> in-depth clinical evaluation, standardized questionnaires | <strong>Cost:<\/strong> 50-120\u20ac (partially reimbursed) | <strong>Duration:<\/strong> 60-90 min<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">3\ufe0f\u20e3 Neuropsychological assessment<\/div>\n <p><strong>Neuropsychologist:<\/strong> comprehensive cognitive tests (CPT, Stroop, WISC\/WAIS) | <strong>Cost:<\/strong> 300-600\u20ac (not reimbursed) | <strong>Duration:<\/strong> 3-4h + feedback<\/p>\n <\/div>\n <div class=\"expert-inner\">\n <div class=\"expert-inner-title\">4\ufe0f\u20e3 Diagnostic summary<\/div>\n <p><strong>Specialist physician:<\/strong> integration of data, differential diagnosis, care plan | <strong>Cost:<\/strong> 60-100\u20ac | <strong>Duration:<\/strong> 45 min<\/p>\n <\/div>\n <\/div>\n\n <h3>Diagnostic pathway for autism<\/h3>\n\n <div class=\"expert-box\">\n <div class=\"expert-box-\n<script type=\"application\/ld+json\">\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@graph\": [\n {\n \"@type\": \"Article\",\n \"@id\": \"https:\/\/www.dynseo.com\/tests-diagnostiques-tdah-et-tsa-outils-scientifiques-dynseo\/#article\",\n \"headline\": \"Tests diagnostiques TDAH et 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