Speaker
Dr. Leanne ten Brinke
Appearances over time
1 episodes
Episodes
1
Podcasts
Quotes & moments
Completely untrained people shown just 5-second video clips can detect psychopathic personality traits with accuracy reasonably correlated to trained psychologists with full case files.
People with high psychopathy were found to smile broadly — including the eye-crinkling Duchenne smile — while saying hostile things, creating a discordance others naturally flag as suspicious.
In a UBC study, narcissistic students were rated most agreeable, well-adjusted, and competent in week 1, but by week 7 the same people were seen as arrogant braggarts who overestimated their abilities.
Approximately 1% of the general population would meet the clinical diagnostic criteria for psychopathy.
On average, about 10% of the population agrees with self-report statements used to measure dark personality traits — meaning 9 out of 10 people are not callous or manipulative.
Dark personality traits are measured via self-report, and people with high scores openly acknowledge being manipulative and remorseless — they simply don't care about the impact on others.
Personality traits change very little over a lifetime, especially when people aren't committed to change — and people with dark personalities typically see no reason to change.
Research on incarcerated men with psychopathy shows that staying in therapy for multiple sessions reduces the likelihood they will reoffend after release — though it doesn't create a personality 180.
Research by Dacher Keltner on a sorority found that the most-gossiped-about people were highly Machiavellian individuals perceived as having status they didn't deserve — not well-liked, but well-known.
Research shows people who score higher on sadism are significantly more likely to engage in online trolling, though this group represents only a small proportion of internet users.
The clearest sign of manipulation is when someone wants something from you and behaves like a completely different, more charming person with you than they do with everyone else.
The most important protective action against dark personalities is to slow down and observe someone's consistent patterns across time and contexts before making any commitment to a relationship.
One key reason people with dark personalities often rise to leadership is that people consistently confuse confidence and bravado with actual competence and ability.
People are measurably better at detecting lies and dark personalities when they rely on a trusted social network rather than trying to assess someone alone.
The 'dark tetrad' isn't four separate boxes — it's a cluster of overlapping traits rooted in callousness, manipulation, and hostility. If someone scores high on one, they likely score high on others too.
Psychopathy isn't a serial killer — it's the charismatic coworker everyone loves who never actually does their work, breaks rules constantly, and suffers no guilt whatsoever. The mask of sanity hides the pattern.
The clearest manipulation red flag is someone who seems perfect around you but treats the Uber driver, the barista, and the hostess with cruelty. That broader pattern will eventually reach you.
Analysis
What they talk about
- Health & Fitness 42%
- Society & Culture 42%
- Business 8%
- Science 8%
