What Is Emotional Intelligence?

Where the term came from

The phrase entered psychology in a 1990 paper by Peter Salovey and John D. Mayer. They described a set of skills that help people appraise and express emotion in themselves and others, regulate emotion, and use feelings to motivate, plan and get things done (Salovey and Mayer, 1990). The core claim was narrow and testable: some people process emotional information more accurately than others, and that difference can be measured like other mental abilities.

Five years later, Daniel Goleman’s bestseller Emotional Intelligence took the idea to a mass audience. Mayer and his colleagues later wrote that the book started from their early model but mixed in persistence, zeal, self-control and character as a whole, and that this popular version became the public face of the concept (Mayer, Salovey, and Caruso, 2008). That history explains most of the confusion you meet today. When a manager, a quiz and a journal article all say “emotional intelligence,” they may be talking about three different things.

Three things people mean by the same two words

Researchers now sort EI work into three families. The ability family treats EI as a kind of intelligence with keyed answers. The trait family, developed by K. V. Petrides and Adrian Furnham, treats it as a cluster of emotion-related self-perceptions that sits inside personality (Petrides and Furnham, 2001). Mixed models bundle emotional skills with motivation, social skills and general well-being. The measurement guide compares the tests each family uses.

None of the three is fake. They answer different questions. The trouble starts when evidence collected for one meaning is quoted as support for another, for example when a self-rating quiz is described as if it measured a tested ability.

What EI is linked to, and how strongly

The honest summary is “something, modestly.” Large meta-analyses find consistent but moderate correlations, and most of the underlying studies are correlational, so they cannot show that EI causes the outcome.

• Health: across 105 effect sizes, EI was associated with better health, more strongly when measured as a self-rated trait (mean r = .34) than as a tested ability (mean r = .17) (Martins, Ramalho, and Morin, 2010).
• Well-being: across 25 studies, the mean correlation with subjective well-being was r = 0.32, higher for self-report measures (0.38) than for ability tests (0.22) (Sánchez-Álvarez, Extremera, and Fernández-Berrocal, 2016).
• School: across 42,529 students, EI correlated with academic performance at ρ = .20, and the authors note there is no evidence yet for which way the causation runs (MacCann and colleagues, 2020).
• Work: corrected correlations with job performance ranged from 0.24 to 0.30 across the three families of measures (O’Boyle and colleagues, 2011).

Notice the pattern in the first two lines: self-report EI measures correlate more strongly with self-reported health and happiness. Part of that gap is probably shared method (the same person filling in both questionnaires on the same day), which is why the ability-test numbers are the more conservative guide.

Four things emotional intelligence is not

It is not niceness. In two studies, people who knew more about regulating emotions were more helpful if they had a strong moral identity, and more harmful toward coworkers if they scored high in Machiavellianism (Côté and colleagues, 2011). Emotional skill amplifies goals. It does not supply good ones.

It is not calmness. Managing an emotion can mean expressing it clearly at the right moment. “I’m frustrated that this is the third deadline change this month, and I need a firm date” is an emotionally intelligent sentence.

It is not mind reading. The perceiving branch is about accuracy, and accuracy improves when you check. Asking “You went quiet after the budget came up. Is that a concern, or am I misreading it?” beats guessing confidently.

It is not a single number that settles who is good with people. The myths guide covers the most common overreach, and the EQ vs. IQ guide examines the claim that EQ matters more than IQ.

Using the idea without overusing it

A good definition helps you ask better questions about a specific moment: what did I notice, what did I misread, what would I do differently. It is less helpful as a verdict on a whole person. If you want a structured starting point, the EQTiger assessment asks about six everyday areas and returns descriptive 0 to 100 EQTiger scores. It is an original reflection tool, and the research above concerns other instruments, not EQTiger. The score guide explains what those numbers can and cannot tell you, the components guide compares the major models part by part, and the fundamentals hub lists every guide in this series.