Scientists reveal the one posture that may expose a hidden psychopath

You can learn a lot about someone before they even open their mouth. While most of us pick up on obvious cues — a nervous twitch, a forced smile, maybe even a dodgy handshake — researchers now say that posture alone could hint at something far more sinister. According to new findings, one particular stance may be a subtle but telling sign of a psychopathic personality.

What body language is really saying

We’ve all heard that crossed arms can mean defensiveness and that clenched fists often signal anger. But some researchers are going a step further, suggesting that certain people, particularly those with manipulative or dominant tendencies, naturally adopt a very specific kind of posture: open, upright and confidently planted.

The theory, explored by psychology professor Susan Krauss Whitbourne and based on studies by researchers at McGill University, argues that psychopaths may project control through body language as a strategy to influence or even intimidate others.

In a series of experiments involving over 600 students, participants were photographed or observed in a lab setting and asked to complete personality assessments. The results? Those who held themselves in tall, grounded, dominant stances consistently scored higher on traits associated with Machiavellianism, competitiveness, and social dominance — classic psychopathic markers.

Confidence or control?

To be clear, standing tall doesn’t make you a monster. Posture alone isn’t a diagnosis. But the researchers argue that posture can reinforce certain social advantages — people tend to trust or follow those who appear self-assured. And for someone already inclined to manipulate others, this can become a useful tactic.

What’s more, even when participants were asked to change their posture — from dominant to submissive or vice versa — the underlying traits picked up in the personality tests didn’t budge. The behaviour, it seems, goes much deeper than the pose itself. For these individuals, appearing powerful isn’t just habit — it’s strategy.

Psychologist Soren Wanio-Theberge explains that such individuals see inferiority as intolerable. They’re wired to avoid it at all costs, often using intimidation — whether verbal or physical — to assert their place in a perceived hierarchy.

A word of caution

Of course, not every confident person you meet is secretly plotting your downfall. As Whitbourne herself points out, the research is correlational, not conclusive. It was conducted primarily with university students and doesn’t account for broader demographics. Still, it offers a compelling glimpse into how some behaviours, even as subtle as how we sit or stand, can reflect deeper motivations.

So the next time you’re sizing someone up — on a date, at work, or even in a queue — it might be worth paying attention to how they carry themselves. If their presence feels more like a performance than a posture, and they seem to lean into power rather than connection, your instincts might be nudging you for a reason.

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Brandon Lee

Hi, I’m Brandon from the Decatur Metro team. I guide you through the trends and events reshaping our region.