People gaslight others primarily to gain power and control. Sometimes this is a deliberate strategy to dominate a partner, employee, or family member. Other times, it’s a learned behavior the person isn’t fully aware of, rooted in their own insecurity, childhood experiences, or personality traits. The motivations vary, but the mechanism is consistent: by making someone doubt their own perception of reality, the gaslighter shifts the balance of power in their favor.
Control and Power Are the Core Motivations
At its most fundamental level, gaslighting is a coercive control tactic. The person using it gains something at the expense of someone else’s agency, safety, and wellbeing. When a gaslighter repeatedly denies what happened, twists the facts, or tells you that you’re “too sensitive,” the effect is cumulative. Your self-doubt grows, your confidence erodes, and you become increasingly dependent on the very person undermining you. That dependency is the point.
In intimate relationships, this dynamic serves a specific purpose: it keeps the other person in the relationship. A partner who no longer trusts their own judgment is far less likely to leave. Gaslighting also functions as a deflection tool. It shifts the focus away from the abusive person’s behavior and onto the supposed emotional instability of the person being targeted. Instead of answering for what they did, the gaslighter reframes the conversation so that you’re the one with the problem.
Narcissistic Traits and the Need for Superiority
Gaslighting is closely associated with narcissistic personality traits, including a sense of superiority, a constant need for admiration, a lack of empathy, and a preoccupation with power and entitlement. People with these traits gaslight to protect their self-image. Admitting fault, acknowledging someone else’s perspective, or accepting criticism would threaten the inflated sense of self they depend on, so they rewrite reality instead.
Narcissistic gaslighting can look different from person to person, but common patterns include controlling behavior, blame-shifting, denying or twisting the truth, and invalidating feelings. If you confront a narcissistic gaslighter with evidence of something they said or did, they won’t just disagree. They’ll tell you it never happened, or that you’re remembering it wrong, or that you’re being dramatic for bringing it up at all. The goal isn’t to win an argument. It’s to make you stop trusting yourself.
Some People Gaslight Without Realizing It
Not all gaslighting is calculated. Some people engage in it unconsciously as a way to protect their own ego. By downplaying your concerns, they avoid feeling criticized and maintain a sense of control they may not even recognize they’re clinging to.
This often traces back to childhood. People who grew up in households where gaslighting was common may internalize it as normal communication. If a child learns that denying reality or dismissing someone’s feelings is how conflict works, they carry that template into adult relationships without necessarily understanding what they’re doing. In some cases, gaslighting developed as a survival mechanism in a toxic or abusive childhood environment, a way to avoid punishment or maintain safety that later becomes a reflexive response to any emotional discomfort.
Attachment style plays a role here too. Someone with an avoidant attachment style, meaning they tend to pull away from emotional closeness, may dismiss or invalidate your perspective when they feel pressured into intimacy. They’re not strategically trying to control you. They’re protecting themselves from feelings they don’t know how to handle. The effect on you, though, is the same.
Gaslighting in the Workplace
Gaslighting isn’t limited to romantic relationships. It thrives wherever power imbalances exist, and workplaces are full of them. A supervisor might deny ever approving a plan they explicitly told you to execute. A manager might label you “hypersensitive” for reporting a coworker’s inappropriate behavior. These aren’t miscommunications. They’re tactics that reframe events and deny facts to maintain dominance.
The workplace version is particularly effective because the power imbalance is structural. Your boss controls your performance reviews, your raises, your continued employment. Questioning their version of events carries real professional risk, which makes it easier for the gaslighting to go unchallenged. People who gaslight at work are often motivated by the same things as those who do it in relationships: protecting their position, avoiding accountability, and keeping others off-balance enough to stay compliant.
Systemic Bias Creates Gaslighting Too
Gaslighting also operates at a systemic level, particularly in healthcare. Medical gaslighting happens when a provider dismisses your symptoms, attributes them to stress or anxiety, or implies the problem is in your head. Sometimes this stems from poor communication skills, limited appointment time, or genuine uncertainty about a condition that’s hard to diagnose, like long COVID. But it also results from conscious and unconscious bias. Studies consistently show that women and people of color are more likely to have their health concerns dismissed, which can lead to worse outcomes.
Some researchers argue that gaslighting works as well as it does precisely because systems of oppression create power imbalances that make certain people more vulnerable. When society already marginalizes someone, a gaslighter doesn’t have to work as hard to make that person doubt themselves. The groundwork has already been laid.
How Gaslighting Affects the Person Targeted
Understanding why people gaslight also means understanding what it does to the people on the receiving end. Psychologist Robin Stern identified three stages of what she calls the “Gaslight Effect.” In the first stage, disbelief, you notice something odd in how the other person is behaving but treat it as an isolated incident. In the second stage, defense, you start actively arguing back, replaying conversations in your mind, trying to prove you’re not too sensitive or too stressed. By the third stage, depression, you barely recognize yourself. You feel cut off from friends, joyless, and increasingly unable to trust your own perceptions.
The psychological mechanism driving this progression is cognitive dissonance, the internal conflict that arises when your lived experience is persistently contradicted by someone you trust or depend on. Research has quantified this: individuals exposed to high levels of gaslighting behavior score significantly higher on measures of cognitive dissonance than those who aren’t. Your brain is essentially caught between what you experienced and what you’re being told happened, and over time, the gaslighter’s version wins because the alternative (that someone you rely on is deliberately manipulating you) is too threatening to accept.
Chronic gaslighting produces lasting mental health effects. Survivors commonly develop anxiety, including a persistent sense that the world is unsafe and deep panic in situations that feel outside their control. Unresolved trauma accumulates, particularly when gaslighting is combined with isolation from loved ones and sustained self-doubt. The chronic emotional pressure also distorts thinking patterns, creating cognitive errors that persist even after the gaslighting relationship ends.