Machiavellian traits center on a willingness to manipulate others, a cynical view of human nature, and a focus on personal gain over moral principle. The concept draws its name from Niccolò Machiavelli, the Renaissance political philosopher who advised rulers that cunning and deception were legitimate tools of power. In personality psychology, the term has been formalized into measurable dimensions: distrust of others, amoral manipulation, desire for control, and status-seeking. What makes the topic richer than a simple label for “cold and scheming” is how these traits interact with empathy, morality, age, and context in ways that challenge popular assumptions.
What Researchers Actually Measure
When psychologists talk about Machiavellianism, they are not making a casual character judgment. They are referring to a specific personality construct that has been measured with validated scales since the 1970s. The original instrument, known as the Mach-IV, was built directly from passages in Machiavelli’s writings and asked people how much they agreed with statements about the usefulness of manipulation, the untrustworthiness of others, and the primacy of self-interest. More recent tools, like the Machiavellian Personality Scale, conceptualize the trait as a combination of four tendencies: distrusting others, engaging in amoral manipulation, seeking control, and pursuing status.1Journal of Management. The Development and Validation of a New Machiavellianism Scale These aren’t binary categories. People score along a continuum, and someone can lean Machiavellian in one dimension (say, cynicism about people’s motives) without scoring high on another (like active scheming).
Work on a German-language Machiavellianism scale found that the trait breaks down into facets including cynical or misanthropic views, an agentic orientation (a focus on getting things done through influence), and deceitful behavior. Interestingly, the factor structure differed between men and women, meaning the specific blend of Machiavellian sub-traits that cluster together may not be identical across genders.2Personality and Individual Differences. Towards multifaceted Machiavellianism: Content, factorial, and construct validity of a German Machiavellianism Scale This is worth knowing because it suggests that a woman scoring high on Machiavellianism may express the trait differently from a man who scores equally high, even if both are equally strategic in their social behavior.
Where Machiavellianism Ends and Psychopathy Begins
Machiavellianism is traditionally grouped with narcissism and psychopathy as part of the “Dark Triad,” three overlapping but supposedly distinct personality styles. The overlap with psychopathy, in particular, is large enough that some researchers have questioned whether the two are actually separate constructs at all. A pair of studies found that Machiavellianism and psychopathy produced “nearly identical empirical profiles” and that both were linked to impulsivity-related traits, even though theoretical descriptions of Machiavellianism emphasize cool, calculated behavior rather than impulsive action.3PubMed Central. Psychopathy and Machiavellianism: A Distinction Without a Difference?
The practical takeaway is that the neat boundaries you see in popular psychology articles (“psychopaths are impulsive, Machiavellians are strategic”) are shakier than they appear. In real measurement, the traits bleed into each other. Where a meaningful difference does show up is in behavioral experiments. In a one-shot Prisoner’s Dilemma game, Machiavellianism was the only Dark Triad trait that significantly predicted choosing to betray the other player. Psychopathy and narcissism did not independently predict defection once Machiavellianism was accounted for.4PLoS ONE. The Dark Triad and framing effects predict selfish behavior in a one-shot Prisoner’s Dilemma So while the personality profiles look similar on questionnaires, when it comes to strategically choosing self-interest over cooperation, Machiavellianism pulls the most weight.
The Myth of the Cold Mind Reader
One of the most persistent ideas about Machiavellian people is that they are expert mind readers who use their superior understanding of others’ emotions to manipulate them. The evidence points in a different direction. A meta-analysis covering multiple studies found that Machiavellianism was negatively correlated with all facets of empathy. People who scored higher on the trait were worse, not better, at both feeling what others feel and reading what others think. The modest link to lower cognitive empathy (the ability to infer someone’s mental state) nearly disappeared once low affective empathy (the ability to share in someone’s feelings) was statistically controlled for.5Personality and Individual Differences. Malicious mind readers? A meta-analysis on Machiavellianism and cognitive and affective empathy
This finding shows up consistently. Another study examining the Dark Triad and empathy found that all dark traits were associated with lower affective and cognitive empathy, with the exception that narcissism correlated positively with cognitive empathy.6Personality and Individual Differences. The relationship between the Dark Tetrad and a two-dimensional view of empathy Earlier research similarly found that while higher Machiavellianism predicted lower overall empathy, the deficit was concentrated in the affective side: people high in the trait did not necessarily struggle to understand what others were thinking, but they did not share the emotional experience.7Personality and Individual Differences. The affective and cognitive empathic nature of the dark triad of personality
So how do Machiavellian individuals succeed at manipulation if they are not unusually perceptive about others’ inner lives? The answer seems to lie not in superior social radar but in a willingness to act on opportunities that others would pass up out of conscience. Their advantage is motivational, not perceptual. They are not reading the room better than anyone else; they are simply more willing to exploit what they read.
What Happens Inside the Brain
Brain imaging research has begun to sketch a neural picture. An fMRI study using a trust game found that people scoring high in Machiavellianism showed consistent activation in the thalamus and anterior cingulate cortex when they were the first mover, and in the dorsal anterior insula and inferior frontal gyrus when they played second. These areas are involved in anticipating risk, evaluating rewards, and making inferences about other people’s behavior.8PubMed. Neural correlates of Machiavellian strategies in a social dilemma task The researchers interpreted this as evidence that Machiavellian individuals conduct specific neural operations during social dilemmas that help them exploit others.
A separate imaging study focused on emotional regulation found something that cuts against the “emotionally flat” stereotype. During a cognitive reappraisal task, Machiavellian participants showed increased activation of the amygdala and insula, brain regions tied to generating emotional responses. They also recruited temporal and parahippocampal areas during reappraisal, suggesting they use memory-based and perceptual processes to construct alternative interpretations of emotional situations.9SpringerLink / PubMed Central. Machiavellian emotion regulation in a cognitive reappraisal task: An fMRI study In other words, they are not emotionally dead inside. They appear to experience emotional arousal but actively reframe it, shifting attention between external cues and internal goals. That is a different picture from the robot-like schemer of popular imagination.
Structural brain data adds another layer. A study of healthy males found a negative association between gray matter volume in the dorsolateral prefrontal cortex and both Machiavellianism and psychopathy.10SpringerLink / J Neural Transm. Common and distinct morphometric correlates of the Dark Triad traits: machiavellianism, narcissism and psychopathy in a healthy male sample The dorsolateral prefrontal cortex plays a role in impulse control, planning, and evaluating social consequences, so reduced volume there could relate to the willingness to pursue self-interest despite social norms.
Strategic Behavior in Cooperative and Competitive Settings
One of the more revealing lines of research puts Machiavellian individuals into economic games where they can choose to cooperate or defect. In a public goods experiment, people who scored higher on Machiavellianism contributed less to the common pool when the setting was cooperative, but they behaved no differently from anyone else when the setting was competitive.11Sage Open. Abusing Good Intentions The implication is that Machiavellians are not uniformly selfish. They are context-sensitive free riders. They exploit generous environments because there is something to exploit, and they pull back to baseline when generosity dries up.
This pattern of flexible selfishness shows up in moral reasoning as well. Research found that Machiavellianism predicted choosing the utilitarian option in moral dilemmas, but only when that choice happened to serve the person’s own interest.12Personality and Individual Differences. The end justifies the me: Self-interest moderates the relationship between Dark Triad traits and utilitarian moral decisions When the utilitarian option required personal sacrifice, the link evaporated. This is an important distinction from genuine utilitarian philosophy: Machiavellian individuals do not actually believe in “the greatest good for the greatest number.” They borrow utilitarian logic when it conveniently aligns with their own benefit. Broader work has confirmed that all three Dark Triad traits correlate with endorsing utilitarian moral judgments, but the picture is complicated by the role of low honesty and low concern for harm.13Personality and Individual Differences. The Dark Triad of personality and utilitarian moral judgment: The mediating role of Honesty/Humility and Harm/Care
Lying and How Machiavellians Do It Differently
You might expect that Machiavellian individuals would be prolific liars, and the data backs that up, but with a specific flavor. Both psychopathy and Machiavellianism are linked to telling more lies than average. Where they diverge is in the type of lying: psychopathy was associated with lying for no apparent reason, while Machiavellianism was linked to telling more white lies, the kind told to manage social impressions or smooth interactions.14Personality and Individual Differences. What a tangled web we weave: The Dark Triad traits and deception This fits the broader profile: Machiavellian lying tends to be purposeful, aimed at gaining or maintaining an advantage, rather than chaotic or thrill-seeking.
A study examining lying across multiple trust-dependent contexts found that Machiavellianism was the strongest predictor among the Dark Tetrad traits (which adds sadism to the original triad). People high in the trait reported greater confidence in their ability to deceive, less mental effort while doing it, and more positive feelings about it.15Personality and Individual Differences. Dark Tetrad personality traits and the propensity to lie across multiple contexts In other words, lying does not particularly stress them out. They do it with relative ease and do not feel bad about it afterward. That combination of skill, comfort, and instrumentality is what makes Machiavellian deception potent in everyday settings.
How These Traits Develop and Change Over a Lifetime
Machiavellian traits are not purely innate, nor are they purely shaped by upbringing. Behavioral genetic research using twin designs found that all Dark Triad traits showed influence from both genetic and non-shared environmental factors, with heritability estimates ranging from about 31% to 72%. What set Machiavellianism apart was that it alone also showed the influence of shared environmental factors, meaning the family environment children grow up in may matter more for Machiavellianism than for narcissism or psychopathy.16Personality and Individual Differences. A behavioral genetic investigation of the Dark Triad and the Big 5 This makes intuitive sense: growing up in a household where manipulation is modeled or where trust is routinely broken could teach a child that Machiavellian tactics are normal or necessary.
Subsequent work examining childhood experiences and dark traits confirmed that both adverse and positive developmental environments play a role in shaping these traits.17Journal of Research in Personality. Adverse and positive childhood experiences and their associations with dark personality traits A nurturing environment appears to act as a buffer against developing pronounced Machiavellian tendencies, while childhood adversity can push them higher.
Age matters too, and the trajectory is striking. A large cross-sectional study found that Machiavellianism rises sharply during the transition from late childhood into adolescence, peaks during the teenage years, and then declines steadily throughout adulthood, reaching its lowest point around age 65.18PubMed. Age differences in Machiavellianism across the life span: Evidence from a large-scale cross-sectional study This pattern mirrors broader personality maturation: adolescence is a period of social experimentation and boundary-testing, and as people age, they generally become more agreeable, more trusting, and less inclined toward manipulation. If you have ever noticed that teenage social dynamics feel particularly ruthless, this finding provides a personality-science explanation for why.
Machiavellianism at Work
The workplace is where Machiavellian traits often become most visible and most consequential. Research on Machiavellian leaders found that their manipulative style increased subordinates’ perceptions of abusive supervision, which in turn predicted more counterproductive work behavior among employees (things like deliberate underperformance, sabotage, or withdrawal). The effect was even stronger when the leader also engaged in organizational political behavior, like forming alliances to gain personal advantage at the expense of organizational goals.19PubMed Central. Leader’s Machiavellianism and employees’ counterproductive work behavior: testing a moderated mediation model
The pattern extends into education. In a study of medical students, those who scored higher in Machiavellianism reported more academic misconduct, and the trait was the strongest predictor of cheating, stronger than age, sex, or psychological well-being. Students who perceived more cheating among their peers and lower penalties for being caught also reported more misconduct, but Machiavellianism operated independently of those contextual factors.20PubMed Central. Machiavellian Medical Students Report More Academic Misconduct: A Cocktail Fuelled by Psychological and Contextual Factors The takeaway for institutions is that while environmental factors like enforcement and peer norms matter, personality traits set a baseline willingness to cut corners that situational deterrents can only partially offset.
Cultural Variation and Gender
Machiavellian traits are not distributed evenly across cultures or genders. A six-country study found that men scored higher than women on all Dark Triad traits in every country examined. Machiavellianism and narcissism were both associated with stronger independent self-construals, meaning a view of the self as separate from and not defined by social relationships.21Personality and Individual Differences. Self-construals and the Dark Triad traits in six countries The Dark Triad traits were largely unrelated to interdependent self-construals (viewing the self as embedded in relationships), which complicates any simple story about collectivist cultures suppressing these traits.
A comparison of Australian and Turkish samples found that Turkish participants scored higher on all Dark Triad traits as well as on competitive and dangerous worldviews.22Personality and Individual Differences. The Dark Triad traits in Australia and Turkey Interpreting cross-cultural differences requires caution, since measurement tools may not carry identical meaning across languages and social norms, but the pattern suggests that societies where competition feels more intense or where trust in institutions is lower may produce higher average levels of Machiavellian orientation. The variation is real even if its causes are still debated.
When Machiavellians Act Prosocially
It might seem paradoxical, but there is evidence that Machiavellian individuals can behave prosocially under certain conditions. A study examining the interplay between Machiavellianism, empathy, and death anxiety found that when Machiavellian individuals experienced heightened awareness of their own mortality, they became more affectively empathetic and, as a result, more prosocial. This showed up across several categories of prosocial behavior, including altruistic, anonymous, and emotionally motivated helping.23PubMed. Can Machiavellianism Not be Prosocial? Roles of Empathy and Death Anxiety
The mechanism appears to run through affective empathy as a mediator: death anxiety temporarily raises emotional responsiveness, which in turn unlocks helping behavior that the person’s Machiavellian tendencies would ordinarily suppress. This does not mean that reminding a manipulative colleague of their mortality will turn them into a generous collaborator. But it does suggest that the callousness associated with Machiavellianism is not a fixed wall. It can be breached by experiences that make emotional connection feel urgent.
Online Behavior and Trolling
Given the association between Machiavellianism and manipulation, you might assume it would be the top predictor of internet trolling. It is not. A study examining the Dark Tetrad and online trolling found no significant effect of Machiavellianism on immediate trolling motivation. Instead, psychopathy and sadism emerged as the relevant predictors, becoming more important at higher levels of trolling motivation.24PubMed Central. Troll story: The dark tetrad and online trolling revisited with a glance at humor This makes sense within the broader profile: trolling is typically impulsive, attention-seeking, and gratuitous. Machiavellian individuals prefer purposeful manipulation with a payoff, not chaos for its own sake. The internet troll who posts inflammatory comments just to watch people react is more likely expressing psychopathic or sadistic tendencies than Machiavellian ones.
Whether Therapy Can Shift These Traits
A natural question is whether someone high in Machiavellianism can change, either through deliberate effort or therapeutic intervention. The clinical literature suggests that change is possible but requires specific approaches. Role-taking exercises, which ask the person to adopt another’s perspective and sit with the emotional experience rather than simply analyze it, have been proposed as a way to challenge the emotional detachment typical of high Machiavellianism. Empathy training targets the gap between cognitive understanding (“I know you are upset”) and affective resonance (“I feel your distress”). Schema-focused cognitive therapy, which works on deep-seated patterns of thought about the self and others, can address the cynical worldview that underpins Machiavellian behavior.25Journal of Psychiatry Research Reviews & Reports. Understanding Machiavellianism: Traits, Psychological Perspectives, and Implications for Psychotherapy
The honest caveat is that evidence for the effectiveness of these interventions remains thin. Most of what exists is theoretical or based on case-level clinical reasoning rather than large controlled trials. Part of the difficulty is motivational: Machiavellian individuals often see their traits as advantageous and may not seek therapy for the traits themselves. They are more likely to show up in a therapist’s office for secondary problems, like relationship breakdowns, workplace conflicts, or the stress of maintaining an exhausting social performance. A skilled therapist can use those presenting problems as a doorway into deeper work on trust, emotional vulnerability, and the long-term costs of treating every interaction as a transaction. But the trait is unlikely to shift dramatically in someone who does not perceive it as a problem in the first place. The age data mentioned earlier offers some comfort: for most people, the manipulative peak of adolescence naturally gives way to greater social maturity and trust with time.