In 1995, Daniel Goleman's seminal book, Emotional Intelligence: Why It Can Matter More Than IQ, radically changed the language business leaders began using around leadership. The impact was huge. It put a name to something managers had always sensed but rarely said out loud: that how a leader handles emotions, their own and everyone else's, can matter as much to their success as raw intellect or technical skill.

Thirty years later, that book is still the reference point most organizations use when they talk about EQ in leadership. But a lot has happened since 1995, both in how organizations built EQ into their leadership training programs and in what neuroscience has learned about where emotions actually come from.

Here are the three crucial updates to understand for your emotional intelligence programs:

1. EQ is not a behavior, but gets trained like it is
2. the "amygdala hijack" model has been updated,
3. modern neuroscience shows emotions are constructed predictions, not universal reactions.
   
   

First, a quick history of EQ in leadership development

Goleman wasn't the first to propose the idea and value of social intelligence, but was the biggest influencer.

Beginning as early as the 1920s, psychologists like Columbia University researcher Edward Thorndike began studying ideas of social intelligence and the impact on work. As Thorndike noted: "The best mechanic in the factory may fail as a foreman for lack of social intelligence."

Awareness of the impact of emotions on worker productivity continued to grow through mid-century as the study of corporate leadership effectiveness gained steam. But the next big breakthrough didn't come until 1990, when Peter Salovey and John Mayer published their pivotal research on emotional intelligence in an academic journal.

Salovey and Mayer changed the conversation about emotions, which were previously viewed as a barrier to reasoning. Their research showed that emotions, when appropriately directed, could lead to more productive outcomes.

Building on this work, Daniel Goleman's book entered the scene in 1995, and quickly hit the New York Times Best Seller list, where it stayed for a year and a half. It was the critical piece that caught the attention of corporate executives, redefining what professional success looked like for leaders: emotional intelligence wasn't a soft skill to suppress, it was a competitive advantage.

Today, organizations place a much higher priority on emotional intelligence in leadership. According to a study from Lee Hecht Harrison Penna, 42% of organizations now provide specific EQ training. Most large organizations with established leadership development programs have built some version of EQ into that training.

But widespread adoption isn't the same thing as getting it right. Most emotional intelligence programs for leaders are still built on the foundations set in the '90s. Thirty years is a long time in neuroscience, and the research behind how emotions actually work has moved substantially since then. A lot of what organizations do with "emotional intelligence training" hasn't caught up.

Let’s dive into three big updates that L&D teams should pay attention to. 

1. EQ was never meant to be a behavior, but it got trained like one anyway

When Goleman's book landed in 1995, it didn't enter a blank slate. Corporate leadership development was already built around competency frameworks and behavioral training: models that broke leadership down into discrete, observable behaviors that could be taught, assessed, and rated.

So when EQ showed up as a compelling new idea, organizations did what they'd already been trained to do. They tried to fit it into the model they had. Instead of treating emotional intelligence as something foundational, upstream of every other leadership skill, it got slotted in as one more competency on an already-long list, sitting next to things like managing conflict and delegation.

The clearest evidence of this is the assessment tools that came out of it. Perhaps the most well-known tool is the Emotional Competence Inventory, later revised into the Emotional and Social Competency Inventory (ESCI), a 360-degree tool still in wide use today. The technical manual for the ESCI states plainly that it "provides a behavioral measure of emotional and social intelligence competencies."

The ESCI and other similar tools doesn't measure how someone actually experiences or processes emotion. It measures observed behavior, rated by managers, peers, and direct reports, specifically because behavior is what can be reliably rated by other people.

That's a deliberate design choice, and it makes sense for a measurement tool. The issue, however, is when the measurement tool begins to influence the definition and training of the skill. In many organizations, "high EQ" began to be understood not as a set of internal capacities the drive outward behavior, but simply "people like working with you and you get along with people."

Why it’s so important that leadership development does not treat EQ as a behavior

This is the same gap we've written about when it comes to behavioral training more broadly: a model built to train visible, repeatable actions works fine when the goal is visible, repeatable actions. It's a poor fit for something like EQ, where the internal process matters as much as the output.

Research has shown that all aspects of emotional intelligence are not equal, but rather inter-dependent. External behaviors don’t arrive without first mastering the internal capabilities.

In our On Edge research, we found a strong association between internal emotional awareness with external behavior:

• • • Leaders who scored in the top quartile for emotional awareness were 9.3x more likely to score in the top quartile for managing emotions.

• • • • • Similarly, leaders who scored in the top quartile for being able to precisely identify their own emotions were 19.4x more likely to score in the top quartile for the ability to influence group dynamics.
          
          

Effective EQ training has to start internally, not as an external behavior. And that internal starting point is exactly where the next problem shows up.

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2. The amygdala hijack isn’t quite the enemy we thought it was

One of the key concepts in EQ training is the idea of the amygdala hijack. This is the idea that a stressful situation triggers a such a strong emotional reaction in the amygdala - a part of the brain long associated with threat detection - that it overrides rational thought and takes over a person's behavior.

It gave leaders language for something everyone already experienced: getting emotionally overwhelmed and reacting in ways they later regretted. The training that followed was straightforward. Notice the hijack, then work to suppress the reaction before it turns into a behavior.

Part of why the idea took hold so quickly is the amygdala's reputation. It's often described as a more "primal" structure, sometimes jokingly called part of our "lizard brain," in contrast to the prefrontal cortex, where higher-level thinking and rational processing happen.

That framing made the hijack feel almost mechanical: a primitive structure physically overriding a rational one, with the rational brain having little say in the matter.

But the neuroscience the concept was originally built on has kept moving, and Goleman has said so himself. The amygdala hijack drew heavily on the early work of neuroscientist Joseph LeDoux, who researched how the amygdala processes threat. In a 2022 LinkedIn article, Goleman explained that LeDoux has since backed away from treating the amygdala as the single brain structure responsible for emotional override.

The picture that's replaced it is more distributed. The amygdala isn't the lone threat detector, it works in coordination with circuitry spread throughout the brain. And rather than acting as an isolated override switch, the amygdala and its connected circuitry are now understood to be part of the brain's broader "salience" network, the system that directs attention toward whatever seems most relevant in the moment.

Why it matters to understand the shift in the amygdala override

You might be thinking, “cool neuroscience, but what does this have to do with leadership development?” There are two takeaways you need to pay attention to here.

The first thing to understand is that the emotional override has everything to do with the direction of our attention. A perceived threat is, understandably, treated as highly relevant, which is why attention gets pulled toward it so forcefully.

That also means that leaders’ attention gets pulled away from other things. Your perceptions narrow, and you begin to overlook other possibilities or important information. That’s why it becomes more crucial to be able to direct your own attention and consciously direct your perceptions.

This understanding is fundamentally important to the challenges leaders are facing now, as they deal with the highly-emotional situations surrounding rapid change, AI transformation, economic uncertainty, and much more.

And it also changes how L&D teams should train this skill. Instead of focusing training on managing triggers, development should instead begin with the skill of attention training.

The second thing to take away is that emotions are not unavoidable, primal reactions outside of the leader’s control that must be suppressed. So what are they instead?

That brings us to the third update: Emotions are constructed by the brain.

3. Emotions aren't reactions. They're created to support the brain’s predictions.

This is where the science has moved the furthest, and it's the most important update for anyone building leadership training today.

Neuroscientist Lisa Feldman Barrett's Theory of Constructed Emotion offers a different starting point entirely. Her research holds that emotions aren't fixed, hardwired reactions triggered by an event. They're actively constructed by the brain, in real time, using past experience and present context to predict what's about to happen and how the person should be prepared to respond.

Here's roughly how it works. A core job of the brain is to prepare a person for what's coming next. To do that, it's constantly pulling in fragments of information: what's happening around you, what's happening inside your body, what happened last time something like this occurred. It runs all of that through a filter shaped by your beliefs, past experience, and context.

At SIY Global, we call that filter the Perception Box™. It takes in ambiguous information and turns it into a narrative, a story about what's actually going on. The brain then uses that narrative to generate a prediction about what's likely to happen next. The brain then constructs an emotion that supports the prediction, not a response to the raw event itself.

This isn't a fringe reinterpretation. Barrett first published the theory in 2017, and in May 2025 she and fifteen co-authors published a substantial follow-up in Perspectives on Psychological Science extending it further.

The core claim holds up: signals like facial expression, heart rate, and respiration don't carry fixed, built-in emotional meaning on their own. Emotional meaning comes from the relationship among those signals, constructed by the brain in context, not read off the body like a barcode.

Why constructed emotions matter for leadership development

The implication for leadership training is direct. If emotions are predictions built from perception, then the old goal, catch the reaction and suppress it, is aiming at the wrong target.

The more effective goal is examining the perception that generated the prediction in the first place. In the moment, that looks like a leader learning to ask:

• What story am I telling myself right now?
• What assumptions is it built on?
• Are they actually true?
• What else might be going on here?
  
  

It’s time to update how EQ is developed in leadership programs

Thirty years after Goleman's book, the core insight that emotions matter to leadership performance hasn't changed. What's changed is the understanding of where emotions come from and how to actually influence them.

EQ isn't a behavior to drill until it becomes a habit. It isn't a switch that gets flipped by a stressful event and then needs to be forced back off. It's built upstream, in perception and prediction, long before any behavior appears.

Training that only addresses the visible behavior, or only addresses the emotion after it surfaces, is arriving too late to change the outcome that matters. Training that helps a leader examine the narrative generating their predictions is the most efficient way to change the behaviors that come downstream.

Get the full picture in our free guide, Begin Upstream: Designing effective leadership development in the era of change-fatigued skeptics. Inside, you'll find the neuroscience behind why the brain predicts before it reacts, and a five-step model built for the conditions leaders actually face today.

Frequently Asked Questions on EQ

Here are some of the most common questions we hear related to our views on this topic:

Is the amygdala hijack real? The underlying experience, feeling emotionally overwhelmed in a high-stress moment, is real. But the specific neuroscience it was originally based on has evolved. Even Joseph LeDoux, the researcher whose early work on the amygdala the concept relied on, has since moved away from treating the amygdala as the sole structure responsible for emotional override.

What is the Theory of Constructed Emotion? It's Lisa Feldman Barrett's model of how emotions actually form. Instead of treating emotions as fixed, automatic reactions to events, the theory holds that the brain actively constructs each emotion in the moment, using past experience and present context to predict what's about to happen and how a person should respond.

Why doesn't traditional EQ training hold up under pressure? Because it's typically built to train and reward visible behaviors, like staying calm or using empathetic language, rather than the internal perception and prediction that produce those behaviors in the first place. A leader can rehearse the right behavior in a calm training session and still lose access to it in an actual high-stakes moment, because the internal process was never addressed.

Can you really train someone to change their perception? How can I change someone's beliefs? We aren't training people to perceive the world differently. We are training them to see the prediction their brain is generating so that they can evaluate if it needs to be updated. Researchers in the Decision Science field like Daniel Kahneman and Annie Duke have show conclusively that when you introduce opposing perspectives to a decision, regardless of whether you change your mind in the end, it results in a better decision. That's essentially what we are helping leaders to do. To become more curious about how they interpret the challenges that they encounter.