What Is Emotional Intelligence? A Complete Science-Based Guide

You've probably heard that emotional intelligence (EQ) matters more than IQ for success in life. But what exactly is emotional intelligence, and how do you know if you have it?

This guide breaks down the science of emotional intelligence—what it means, why it matters, and how you can develop it.

Defining Emotional Intelligence

Emotional intelligence is the ability to perceive, understand, manage, and use emotions effectively—both in yourself and in your interactions with others.

The concept was popularized by psychologist Daniel Goleman in 1995, but the scientific framework comes from researchers Peter Salovey and John Mayer, who first defined the term in 1990.

Think of it this way: IQ measures your ability to process information and solve logical problems. EQ measures your ability to process emotional information and navigate social situations.

The Four Core Components

Most researchers agree that emotional intelligence consists of four main abilities:

1. Perceiving Emotions

This is the foundation—the ability to accurately detect emotions in:

• Yourself: Recognizing when you're feeling anxious vs. excited, or angry vs. hurt
• Others: Reading facial expressions, body language, and tone of voice
• Art and environment: Sensing the emotional tone of music, images, or situations

People high in this ability pick up on subtle emotional cues that others miss. They notice when a colleague's smile doesn't reach their eyes, or when tension fills a room.

2. Using Emotions to Facilitate Thinking

Emotions aren't just feelings—they're information that can guide better decisions.

This component involves:

• Using your mood to match the task (creative brainstorming when you're upbeat, detailed editing when you're calm)
• Leveraging emotions to prioritize what demands attention
• Generating emotions to aid empathy and perspective-taking

For example, a novelist might deliberately recall feelings of loss to write an authentic grief scene. A negotiator might notice their frustration as a signal that a deal isn't right.

3. Understanding Emotions

This is emotional knowledge—understanding:

• Emotional vocabulary: The difference between irritated, frustrated, and furious
• Emotional patterns: That anxiety often masks deeper fears, or that anger frequently follows hurt
• Emotional causes: What triggers certain feelings in yourself and others
• Emotional trajectories: How emotions evolve and combine over time

People strong in this area can predict emotional reactions and understand complex emotional situations. They know that their partner's irritability after work is about stress, not about them.

4. Managing Emotions

The most visible component—the ability to regulate emotions in yourself and influence them in others:

• Self-regulation: Calming yourself when anxious, motivating yourself when unmotivated, or staying composed under pressure
• Emotional flexibility: Adjusting your emotional state to fit the situation
• Helping others: Supporting someone through grief, defusing a tense conflict, or inspiring a team

This doesn't mean suppressing emotions—that's actually counterproductive. It means working with emotions skillfully.

Why Emotional Intelligence Matters

Career Success

Research consistently shows that EQ predicts job performance, especially in roles requiring:

• Leadership and management
• Sales and client relationships
• Teamwork and collaboration
• Customer service
• Healthcare and counseling

A study of 358 Johnson & Johnson managers found that the highest-performing managers scored significantly higher on emotional intelligence competencies.

Relationship Quality

Emotional intelligence is strongly linked to:

• Relationship satisfaction in romantic partnerships
• Conflict resolution skills
• Communication quality
• Empathy and understanding

Partners with higher EQ navigate disagreements more constructively, express needs more clearly, and recover from conflicts faster.

Mental Health

Higher emotional intelligence correlates with:

• Lower rates of anxiety and depression
• Better stress management
• Higher life satisfaction
• Stronger resilience after setbacks

This makes sense—if you can understand and manage your emotions, you're less likely to be overwhelmed by them.

Physical Health

Emerging research links EQ to better physical health outcomes, likely because:

• Better stress management reduces cortisol and inflammation
• Stronger relationships provide social support
• Self-awareness leads to healthier lifestyle choices

Trait EQ vs. Ability EQ: Two Approaches

There's an important distinction in how researchers measure emotional intelligence:

Ability EQ (Mayer-Salovey-Caruso Model)

Treats EQ like a cognitive ability—something you can test with right and wrong answers. Measured through performance tasks like:

• Identifying emotions in faces
• Predicting emotional outcomes in scenarios
• Choosing effective emotional strategies

Trait EQ (Petrides Model)

Treats EQ as a personality trait—your typical emotional tendencies and self-perceptions. Measured through self-report questionnaires about:

• How well you understand your emotions
• How confident you feel managing feelings
• How attuned you are to others' emotions

Both approaches have merit. Ability EQ captures what you can do objectively; Trait EQ captures your self-perceived emotional tendencies.

At Plexality, we use the Ability Model developed by Mayer, Salovey, and Caruso because it treats emotional intelligence as a measurable cognitive ability with demonstrable real-world applications.

The Four Branches of Ability EQ

The Mayer-Salovey-Caruso model measures emotional intelligence across four hierarchical branches:

Perceiving Emotions

• Identifying emotions in faces and voices
• Recognizing emotional cues in art and music
• Distinguishing genuine from false emotional expressions

Using Emotions

• Harnessing emotions to facilitate thought
• Generating emotions to aid empathy
• Using mood states to match cognitive tasks

Understanding Emotions

• Comprehending emotional vocabulary and nuance
• Interpreting emotional transitions and blends
• Predicting how emotions evolve over time

Managing Emotions

• Regulating emotions in yourself effectively
• Managing emotions in others constructively
• Choosing strategies that promote emotional growth

Can You Improve Your Emotional Intelligence?

Yes—but it takes deliberate practice, not just reading about it.

1. Build Emotional Vocabulary

Most people use a handful of emotion words: happy, sad, angry, scared. But emotions are far more nuanced.

Practice: When you feel something, try to name it precisely. Not just "bad" but disappointed, embarrassed, overwhelmed, or resentful. Research shows that accurately labeling emotions actually helps regulate them.

2. Practice Emotional Awareness

Set reminders to check in with yourself throughout the day:

• What am I feeling right now?
• What triggered this feeling?
• Where do I feel it in my body?

Meditation and mindfulness practices strengthen this ability by training attention toward internal states.

3. Develop Empathy Deliberately

When interacting with others:

• Before responding, pause to consider their perspective
• Ask yourself: What might they be feeling? What pressures are they under?
• Practice reflective listening: "It sounds like you're feeling..."

4. Study Emotional Patterns

Keep an emotion journal for a few weeks:

• What situations trigger strong emotions for you?
• How do you typically respond?
• What patterns do you notice?

Self-knowledge is the foundation of emotional intelligence.

5. Practice Regulation Strategies

Build a toolkit of techniques:

• Cognitive reappraisal: Reframing situations in a less threatening light
• Deep breathing: Activating the parasympathetic nervous system
• Taking space: Stepping away before reacting in heated moments
• Physical movement: Using exercise to process intense emotions

The Limits of Emotional Intelligence

EQ isn't everything. It's one piece of human capability, alongside:

• Cognitive intelligence (IQ)
• Technical skills and knowledge
• Creativity
• Physical abilities

And like any strength, emotional intelligence can be misused. High-EQ individuals can be manipulative if they lack ethical grounding. The goal is emotional intelligence in service of authentic connection and mutual well-being.

Understanding Your Emotional Intelligence

Self-assessment of EQ is tricky—the very abilities you're assessing affect your ability to assess them. People with lower emotional self-awareness, by definition, may not realize it.

That's why validated assessments are valuable. They provide:

• An objective baseline
• Specific areas for development
• Comparison to broader populations

At Plexality, emotional intelligence is one of five frameworks we integrate into your personality profile, giving you a complete picture of your emotional tendencies alongside your core personality traits, attachment style, and character strengths.

---

Curious about your emotional intelligence profile? Join our waitlist to discover your complete personality portrait.

References

• Salovey, P., & Mayer, J. D. (1990). Emotional intelligence. Imagination, Cognition and Personality, 9(3), 185-211.
• Mayer, J. D., & Salovey, P. (1997). What is emotional intelligence? In P. Salovey & D. Sluyter (Eds.), Emotional development and emotional intelligence: Implications for educators. Basic Books.
• Mayer, J. D., Salovey, P., & Caruso, D. R. (2002). Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT): User's manual. Multi-Health Systems.
• Goleman, D. (1995). Emotional Intelligence: Why It Can Matter More Than IQ. Bantam Books.
• Brackett, M. A., Rivers, S. E., & Salovey, P. (2011). Emotional intelligence: Implications for personal, social, academic, and workplace success. Social and Personality Psychology Compass, 5(1), 88-103.