Power changes human behavior in predictable, well-documented ways. It makes people more action-oriented and reward-focused, less attuned to others’ emotions, and more willing to take risks. These shifts happen whether someone holds formal authority at work, occupies a high social status, or simply feels powerful in the moment. A large meta-analysis published in Psychological Bulletin confirmed that a leading theory of power, the approach-inhibition model, is well supported: power activates the brain’s reward-seeking systems while dampening its threat-detection systems. The result is a person who acts more, hesitates less, and pays less attention to the people around them.
The Approach System: Why Power Makes People Act
The most fundamental shift that power creates is a tilt toward action. People with power pay more attention to potential rewards and less attention to potential threats. They experience more positive emotions and fewer negative ones. They think and behave in less inhibited ways. This isn’t a personality flaw of powerful individuals; it’s a consistent psychological pattern that emerges even when power is temporarily assigned in a lab setting.
The meta-analysis found that power’s effects on behavior work indirectly, flowing through changes in attention, thinking patterns, and emotion. Of these pathways, emotion carries the largest share. In other words, power doesn’t just make you think differently. It changes how you feel, and those feelings drive the behavioral changes. Powerful people feel good, and that positive emotional state makes them more likely to pursue goals aggressively, speak up first, and take initiative.
People with less power show the mirror image. They become more vigilant about threats, more cautious, more attuned to social cues. This makes sense from an evolutionary standpoint: if you lack control over your environment, paying close attention to those who do control it is a survival strategy.
Power Reduces Empathy at a Neural Level
One of the most striking findings in power research involves what happens inside the brain. When you watch someone else perform an action, your motor cortex fires in patterns that mirror what you’re seeing, as if you were performing the action yourself. This “motor resonance” is thought to be a building block of empathy, helping you instinctively understand what another person is doing and feeling.
A neuroscience study using transcranial magnetic stimulation found that people primed to feel powerful showed significantly lower motor resonance when watching someone else act, compared to people primed to feel powerless. Their brains were literally less likely to mirror another person’s experience. This suggests that power doesn’t just make people choose to ignore others. It changes the automatic, unconscious neural processes that help us connect with people in the first place.
Perspective Taking and the “E on the Forehead” Test
The empathy deficit shows up clearly in behavioral experiments too. In one well-known study, researchers asked participants to draw the letter E on their own foreheads. People primed with high power were more likely to draw it from their own perspective, making it appear backward to anyone facing them. Low-power participants were more likely to draw it so that an onlooker could read it correctly. It’s a small gesture, but it reveals something important: power makes you default to your own viewpoint.
Follow-up experiments in the same series deepened the picture. High-power participants were worse at recognizing that other people didn’t share their privileged knowledge. They assumed others knew what they knew. They were also less accurate at reading emotional expressions on other people’s faces. Across every measure, power was associated with a reduced tendency to comprehend how other people see, think, and feel.
Moral Hypocrisy: Stricter on Others, Lenient on Yourself
Power creates a specific and troubling moral pattern. In a series of experiments, powerful participants condemned cheating more harshly than powerless participants did, but they also cheated more themselves. Across multiple studies, powerful people judged other people’s moral transgressions more strictly than their own identical transgressions. This isn’t garden-variety selfishness. It’s a genuine double standard where power amplifies moral expectations for everyone else while loosening them for the self.
This pattern helps explain why scandals among leaders can feel so jarring. The same people who publicly champion ethical standards may genuinely believe those standards apply differently to them, not out of calculated cynicism, but because power reshapes moral reasoning in self-serving ways.
Overconfidence and Risk Taking
Power consistently inflates confidence beyond what the evidence supports. Five experiments using different methods of inducing power, including memory tasks, workplace authority measures, and assigned roles, all produced the same result: power led to overconfident decisions that generated real monetary losses for the decision-maker.
The real-world consequences can be enormous. Before the 2010 Deepwater Horizon disaster, BP executives assured regulators that a major accident at their Gulf of Mexico well was virtually impossible. Months later, an explosion killed 11 workers and caused one of the worst environmental catastrophes in history. In 2000, AOL’s CEO orchestrated a $350 billion merger with Time Warner, confident it would drive sustained growth. The deal destroyed $54 billion in shareholder value in the first quarter alone. These aren’t isolated cases. Research across businesses, governments, and nonprofits consistently finds that power holders’ decisions are marred by overconfidence.
Power also promotes abstract thinking, which has a dual edge. High-power individuals are better at focusing on big-picture goals and show enhanced executive function. But that same abstraction can mean glossing over critical details, the kind of details that would temper confidence if anyone were paying attention to them.
The Hormonal Signature of Power
Power has a biological dimension as well. Research identifies a specific hormonal profile associated with status and dominance: high testosterone combined with low cortisol (the body’s primary stress hormone). People with this profile have more subordinates, are perceived as more dominant leaders, receive more respect from peers, are more popular in social networks, and engage in more competitive and risk-taking behavior.
Importantly, testosterone alone doesn’t predict these outcomes. The dual-hormone hypothesis holds that testosterone drives status-seeking behavior only when cortisol is low. When cortisol is high, even people with elevated testosterone don’t show the same dominance patterns. This means that stress acts as a brake on power-seeking behavior, and people who feel both powerful and calm are the ones most likely to act on it.
How Power Dynamics Shape Workplaces
The effects of power extend beyond the individual to reshape how entire groups communicate. Research on power distance, the degree to which people in an organization accept unequal authority, shows that high power distance directly reduces communication quality. In one study, people with stronger beliefs in hierarchical authority communicated significantly less with their superiors. The correlation was clear: the more someone accepted power inequality as natural, the less they spoke up.
The mechanism is straightforward. Power distance increases fear of authority, and fear of authority suppresses communication. This has consequences far beyond office politics. The researchers noted that ineffective communication in high-power-distance environments can trigger workplace accidents. When junior employees don’t feel safe questioning a superior’s decision, errors go unchallenged. Aviation safety research has documented this for decades: co-pilots who defer too much to captains miss opportunities to prevent crashes.
Notably, high power distance primarily suppresses upward communication, meaning people talk less to those above them. Communication with peers and subordinates is much less affected. The silence flows in one direction, toward the top, which means the people with the most authority often have the least accurate picture of what’s actually happening.
When Power Leads to Generosity
Power doesn’t inevitably corrupt. The same psychological activation that makes powerful people more impulsive and self-focused can also amplify prosocial tendencies when certain conditions are met. The key factors are dispositional: people who are naturally high in empathy, agreeableness, and compassion tend to use power in communal rather than self-serving ways.
Situational framing matters too. Research on donations found that a person’s sense of power interacts with their current psychological focus. When powerful people are oriented toward preventing harm, their power predicts more avoidance-based generosity (donating to stop suffering). When they’re oriented toward achieving positive outcomes, their power predicts more improvement-based generosity (donating to create opportunity). Power amplifies whatever motivational state is already active, which means the context surrounding a powerful person shapes whether their influence becomes selfish or generous.
This is perhaps the most useful takeaway from decades of power research. Power acts as an amplifier. It doesn’t create new personality traits so much as intensify existing ones while removing the social inhibitions that normally keep behavior in check. A naturally empathetic person with power may become extraordinarily generous. A naturally self-interested person with power may become extraordinarily exploitative. The character was already there. Power just turned up the volume.