Definition of Emotional Intelligence: What Science Says

The term "emotional intelligence" (EI) was formalized in 1990 by psychologists Peter Salovey and John Mayer, who define it as "the ability to perceive, evaluate, and express emotions accurately; the ability to access feelings and generate emotions that facilitate thought; the ability to understand emotions and emotional knowledge; and the ability to regulate emotions in a way that promotes emotional and intellectual growth." The concept was widely popularized by Daniel Goleman with his 1995 bestseller, which provided a broader and more applied version for the workplace.

What is crucial to understand from the outset: emotional intelligence is not simply "being sensitive" or "being kind." It is a real cognitive ability — the ability to process emotional information accurately and usefully. One can have high EI and be very directive. One can have low EI while being a warm and caring person. These are two different dimensions.

EI vs IQ: Complementary, Not Opposed

Emotional intelligence and IQ are often presented as opposites — as if high EI compensates for low IQ. This framework is misleading. The two dimensions are largely independent of each other (one can have high IQ and low EI, or vice versa), and both contribute to different facets of success and well-being. High IQ promotes the solving of abstract problems, mastery of a complex area of expertise, and rapid learning. High EI promotes stress management, cooperation, leadership, and decision-making in highly human contexts.

Scientific models of emotional intelligence

Since its formalization in 1990, several models of emotional intelligence have been proposed, with different definitions and measurement approaches. The two most influential are the Mayer and Salovey ability model and Goleman's mixed model.

The four branches model of Mayer and Salovey

This is the most rigorously defined model scientifically. It organizes emotional intelligence into four hierarchical branches, from the most basic to the most complex.

The Goleman Model: Five Key Areas

The model popularized by Daniel Goleman in his book Emotional Intelligence (1995) is broader and more oriented towards practical applications — particularly in the professional world. It identifies five key areas: self-awareness (recognizing one's own emotions in real time), self-regulation (managing one's emotions and impulses), motivation (mobilizing for internal rather than external goals), empathy (perceiving and understanding the emotions of others), and social skills (effectively managing relationships, communicating, influencing).

This model has had a considerable influence — particularly in the field of leadership and management. However, it has faced scientific criticism: by including personality traits (motivation, social skills) in the definition of EI, it makes it more difficult to measure rigorously and to distinguish from other well-established psychological constructs.

How to Measure Emotional Intelligence?

The measurement of emotional intelligence is a debated topic in psychology, precisely because definitions of the concept vary. Two main measurement approaches are distinguished.

Performance Tests (Based on Objective Tasks)

In line with the Mayer and Salovey model, these tests present the subject with tasks to perform — identifying the emotion in a facial expression, choosing the best way to manage an emotional situation, describing how an emotion would change in a given context — and compare their responses to those of expert judges or reference groups. The main tool of this type is the MSCEIT (Mayer-Salovey-Caruso Emotional Intelligence Test). This approach is the most rigorous from a psychometric standpoint.

Self-Assessments (Questionnaires)

The most widespread approach in applied contexts (business, personal development, coaching) uses questionnaires where the person self-evaluates their emotional abilities. The EQ-i by Bar-On and measures derived from the Goleman model are the most commonly used. The advantage: ease of administration and completion. The significant limitation: self-assessment of one's own emotional skills is itself influenced by the level of EI — a person with low EI may significantly overestimate themselves.

Emotional intelligence and the brain: the neurobiology of emotions

Emotions are not simply "subjective feelings" — they are complex biological processes involving the brain, the autonomic nervous system, the hormonal system, and the muscles. Understanding their neurobiological bases helps to understand why emotional intelligence is a capacity that can be developed.

The amygdala: the alarm detector

The amygdala, a small almond-shaped structure located at the heart of the limbic system, is the brain's main detector of emotional threats. It processes emotional stimuli even before they reach the conscious cortex — which explains why some emotional reactions seem "automatic" and difficult to control voluntarily. The "amygdala hijack" described by Goleman is this phenomenon where the amygdala "takes control" of behavioral responses in situations of intense stress, short-circuiting the prefrontal cortex — the seat of reasoning and voluntary control.

The prefrontal cortex: conscious regulation

The prefrontal cortex (PFC) plays a central role in emotional regulation — the ability to modulate emotional responses appropriately. It can inhibit the automatic responses of the amygdala, cognitively reassess situations ("is it really that serious?"), and choose a more appropriate behavioral response than the one initially generated by the limbic system. The connections between the PFC and the amygdala strengthen with experience — that’s why emotional regulation is a skill that can improve with practice.

Emotional intelligence and neurodevelopmental disorders

The recognition and management of emotions can be significantly affected in certain neurodevelopmental disorders. In autism spectrum disorders (ASD), recognizing facial expressions and understanding others' mental states (mentalization or "theory of mind") can present specific difficulties — not due to a lack of empathy, but because of differences in processing social information. In ADHD, it is often emotional regulation (inhibition of impulsive responses, management of frustration) that is most affected.

These considerations have important implications for educational and therapeutic support. To assess attentional difficulties that may affect emotional regulation, the DYNSEO executive functions test can provide useful insights.

How to develop emotional intelligence?

This is the central question — and the good news is that the answer is positive: emotional intelligence can be developed. Unlike IQ, which is quite stable after childhood, emotional skills can significantly improve at any age with the right practices.

1. Develop emotional self-awareness

The starting point is to better perceive and name your own emotions in real time. Many people have emotions but "notice" them little — they react automatically without really observing what is happening internally. Emotional awareness develops through:

2. Improve emotional regulation

Emotional regulation does not mean suppressing emotions — that would be counterproductive and biologically ineffective. It means modulating their intensity and expression in a way that is appropriate to the situation. The best scientifically documented strategies include cognitive reappraisal (mentally reframing the situation to change its emotional meaning), regulated breathing (activating the parasympathetic system to calm physiological arousal), and acceptance (recognizing the emotion without trying to suppress or amplify it).

3. Develop empathy

Empathy — the ability to perceive and understand the emotional states of others — is a central component of emotional intelligence. It is distinct from sympathy (feeling with the other) and compassion (wanting to reduce the suffering of the other), although these three dimensions are related. Cognitive empathy (understanding what the other feels) and affective empathy (feeling in echo what the other feels) involve partially distinct brain circuits.

To develop empathy, practicing precise recognition of facial expressions is a concrete entry point. The DYNSEO facial expression decoder specifically trains this ability to read emotional faces — particularly useful for people who have difficulty decoding non-verbal signals.

4. Improve social skills and emotional communication

Social skills related to EI include the ability to communicate one's own emotions clearly and appropriately, to manage conflicts constructively, to positively influence the emotional states of those around, and to create trusting relationships. These skills are acquired through practice — varied social experiences, regular feedback, and sometimes therapeutic support or coaching.

Emotional Intelligence and Mental Health

Research establishes strong links between emotional intelligence and mental health. Higher EI is associated with lower levels of anxiety and depression, better stress management, greater life satisfaction, and higher quality interpersonal relationships. These associations are primarily explained by the role of emotional regulation: a better ability to modulate emotional states protects against the accumulation of chronic emotional distress.

Conversely, difficulties in emotional regulation are at the heart of many psychological disorders — borderline personality disorder, PTSD, anxiety disorders, depression. Therapies that directly address these difficulties — such as dialectical behavior therapy (DBT) or acceptance and commitment therapy (ACT) — explicitly integrate the development of emotional skills.

The application CLINT, designed for adults, offers cognitive stimulation exercises that include components of emotional processing and attention — abilities directly related to emotional intelligence. The DYNSEO AI Coach can also support adults in a personalized stimulation program integrating these dimensions.

Emotional Intelligence in Professional Contexts

One of Goleman's central theses — that EI is more predictive of professional success than IQ in many areas — has fueled considerable interest in the world of human resources and management. Available studies nuance this thesis: EI is indeed predictive of performance in jobs with a strong relational component (management, sales, care, teaching, customer service), but this prediction is weaker in fields with high technical or analytical demands where IQ remains predominant.

What is robustly established: leaders with high EI create more engaged teams, manage conflicts better, communicate more effectively in difficult situations, and demonstrate greater resilience in the face of professional adversities.

Emotional intelligence in children: development and education

Emotional intelligence develops from early childhood — the foundations of emotional recognition, empathy, and emotional regulation are established in the early years of life, strongly influenced by the quality of interactions with the surrounding adults (attachment, co-regulation of emotions, putting emotions into words). School can play an important role: social-emotional learning (SEL) programs that explicitly integrate the development of emotional skills have shown positive effects on well-being, academic success, and prosocial behaviors.

For children, learning to name and recognize emotions is a fundamental first step. Suitable visual tools — like those available in the DYNSEO catalog — can support this learning in educational and therapeutic contexts. The choice wheel is particularly useful for helping children identify strategies suited to their emotional states.