Low emotional intelligence stems from a combination of factors: how your brain is wired, how you were raised, what you experienced in childhood, and the cultural environment you grew up in. No single cause explains it. For most people, it’s the result of several overlapping influences, some rooted in biology and others shaped by life experience. The encouraging part is that many of these factors are modifiable, meaning emotional intelligence can improve with deliberate effort.
How the Brain Shapes Emotional Intelligence
Emotional intelligence depends on communication between specific brain networks. The regions most involved include the amygdala (which processes emotional reactions), the insular cortex (which helps you sense what’s happening in your body), the ventromedial prefrontal cortex (involved in decision-making guided by emotions), and the anterior cingulate cortex (which helps regulate emotional responses). These areas don’t work in isolation. What matters is how well they coordinate.
Brain imaging research published in Social Cognitive and Affective Neuroscience found that people who scored higher on a gold-standard emotional intelligence test showed a distinctive pattern: certain brain networks maintained a healthy degree of separation from each other during rest. Specifically, the brain’s emotional processing network and its default mode network (active when you’re daydreaming or reflecting) showed stronger “anti-correlations,” meaning they took turns rather than firing together. People with lower scores showed these networks blurring together, with positive correlations where there should have been separation. The highest emotional intelligence scores were associated with near-zero correlations between key networks, suggesting that clean boundaries between brain systems support better emotional processing.
This doesn’t mean people with lower emotional intelligence have “broken” brains. It means the neural architecture supporting emotional skills varies from person to person, and that architecture is shaped by both genetics and experience.
Childhood Emotional Neglect
Children learn to identify, name, and manage emotions primarily through their relationships with caregivers. When a parent notices a child is frustrated and helps them label that feeling, the child builds a mental vocabulary for their inner life. When that mirroring is absent, the vocabulary never fully develops.
Research published in Frontiers in Psychiatry found that childhood emotional neglect, specifically, was linked to a reduced ability to understand emotional states and put them into words in adulthood. Other forms of maltreatment didn’t show the same association. The researchers noted something counterintuitive: even highly dysfunctional emotional environments (where caregivers used emotions to manipulate, frighten, or blame) were less damaging to emotional understanding than environments where emotions were simply ignored. In manipulative households, an emotional exchange still occurs, however unhealthy, and children learn something about how emotions work. In neglectful environments, emotions are never made into objects of experience or discussion at all.
This distinction matters. The absence of emotional engagement appears to be more harmful to emotional intelligence development than the presence of negative emotional engagement. Children who grow up without emotional attention from caregivers may develop adequate basic emotion perception (recognizing a smile or a frown) but struggle with higher-order skills like understanding complex emotional states or explaining how they feel.
Early Trauma and Stress
Childhood trauma goes beyond neglect. Physical abuse, witnessing violence, household instability, and other adverse experiences can physically alter how the brain develops. Severe stress during childhood disrupts the body’s stress-response system, and that disruption can persist across the lifespan.
Brain imaging studies of adults with trauma histories show a consistent pattern: reduced activity in the brain’s executive control networks (the regions responsible for attention, planning, and impulse control) paired with increased activation of the amygdala and hippocampus during emotionally challenging tasks. In practical terms, this means the brain’s alarm system becomes hyperactive while its ability to regulate that alarm weakens. The result is difficulty managing emotional reactions, reading social situations accurately, and responding to others with appropriate nuance.
Genetics Play a Significant Role
Twin studies estimate that roughly 45% of the variation in trait emotional intelligence is heritable. That’s a substantial genetic contribution, comparable to the heritability of many personality traits. It means some people are born with a biological head start in emotional processing, while others face a steeper learning curve.
But 45% also means more than half the variation comes from environmental factors. Genes set a range of potential, not a fixed outcome. Someone with a lower genetic predisposition for emotional intelligence who grows up in an emotionally rich, supportive environment can develop strong emotional skills. Someone with favorable genetics who experiences neglect or trauma may not.
Alexithymia and Neurodevelopmental Differences
Some people have difficulty identifying and describing their own emotions, a condition called alexithymia. It’s not a disorder on its own but a trait that exists on a spectrum, and it overlaps heavily with low emotional intelligence. Research confirms that alexithymia and emotional intelligence are essentially inverse constructs: as one goes up, the other goes down. People with alexithymia lack the ability to cognitively process their emotions, which is a core requirement for emotional regulation and empathy.
Autism spectrum disorder also affects emotional intelligence in specific ways. People with ASD tend to score lower in perceiving emotions from body language and environmental cues, using emotions to relate to others’ experiences, understanding emotions based on context, and managing emotions in themselves and others. Importantly, many individuals with ASD can correctly label basic facial expressions (they know what a sad face looks like) but struggle with more subtle emotional displays, deceptive expressions, or understanding the social reasons behind someone’s emotional presentation. Rates of alexithymia are significantly higher among people with ASD compared to neurotypical peers, even when matched for verbal and nonverbal intelligence, suggesting this is a core feature of the condition rather than a side effect of other cognitive differences.
Screen Time in Early Childhood
Growing evidence links excessive screen exposure during early childhood to reduced emotional understanding. One study found that increased television exposure between six and 18 months of age was associated with higher emotional reactivity and aggression. Another found that higher screen time at age four predicted lower emotional understanding at age six. Having a television in a child’s bedroom at age six predicted lower emotional understanding at age eight.
The type of screen matters too. Computer use and video gaming were linked to more severe depressive symptoms, while television viewing alone was not. Gaming was associated with lower emotional understanding in boys but not girls. Early and persistent exposure to violent content specifically raises the likelihood of antisocial behavior. At a neurological level, addictive screen use appears to decrease social coping skills and create craving patterns that resemble substance dependence.
The mechanism is straightforward: every hour a young child spends on a screen is an hour not spent in face-to-face interaction, where emotional learning naturally occurs. Screens don’t provide the reciprocal emotional feedback that human relationships do.
Cultural Norms Around Emotional Expression
Culture shapes not just how people express emotions but how they experience them internally. Research comparing American and Chinese young adults found that Americans were significantly more emotionally expressive, with a large effect size. More importantly, the study revealed that cultural differences in expressiveness actually changed the relationship between brain activity and emotional experience. In more expressive individuals, the brain’s body-sensing regions tracked more closely with how strongly they reported feeling an emotion. In less expressive individuals, that connection was weaker.
This suggests that growing up in a culture that values emotional restraint doesn’t just teach people to hide their feelings. It may fundamentally alter how the brain links physical sensations to emotional awareness, making emotions literally feel less distinct or intense. Someone raised in such an environment might score lower on emotional intelligence assessments designed in Western cultures, not because they lack capacity but because their emotional processing has been shaped differently.
Can Low Emotional Intelligence Be Changed?
Emotional intelligence is not fixed. Training programs have demonstrated measurable improvement, particularly in self-focused skills. A randomized controlled trial of an online emotional intelligence training program found significant improvements in self-reported emotion perception, self-regulation, and the ability to help regulate others’ emotions, with effects lasting at least eight weeks after the training ended.
There’s an important caveat, though. The same study found no improvement in performance-based measures of emotional intelligence or in the ability to perceive emotions in others. Self-awareness and self-regulation appear more trainable than the ability to accurately read other people. This pattern has held across multiple studies: the internal, reflective components of emotional intelligence respond to intervention more readily than the interpersonal, perceptive components.
Earlier workplace research found that managers who completed emotional intelligence training improved not only their overall emotional intelligence but also their general health and psychological well-being, while a control group showed no changes. This suggests that even partial improvement in emotional intelligence carries real benefits beyond emotional skills alone.