One of the largest psychological studies ever conducted on criminals has just been published โ and its findings may completely change how we understand criminal behavior. Here are 10 striking takeaways from the research.
Over 12,000 Danes Took the Test

The study is based on responses from 12,496 participants, about 10 percent of whom have criminal records. All answered the same 60-question personality test.
Criminals Score Low on Honesty

Those with criminal backgrounds are significantly more likely to cheat, deceive, and exploit others โ and they donโt necessarily view it as wrong.
They Show Lower Conscientiousness

Another defining trait is a lack of self-discipline and responsibility. Criminals tend to prioritize their own needs over societal rules or obligations.
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Less Emotion, More Control

Surprisingly, criminals donโt appear to be emotionally unstable. In fact, they often exhibit stronger emotional control than non-criminals, making them more prone to taking risks.
Guilt and Shame Play a Smaller Role

Unlike others, criminals often act without being haunted by remorse. Guilt, shame, and empathy tend to play a smaller role in their decisions.
The Impulsive Anger Myth Is Debunked

The long-standing idea that most criminals act out of rage or emotional outbursts is under pressure โ many seem cold, calculated, and deliberate.
Itโs Not About Being Introverted or Extroverted

Criminals donโt stand out in terms of how outgoing or shy they are. The study shows no clear link between extroversion and criminal behavior.
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Agreeableness Doesnโt Define a Criminal

Being friendly or forgiving doesnโt seem to influence criminal tendencies either. This trait doesnโt separate criminals from non-criminals.
Low Emotional Reactivity May Mean Less Fear

Researchers suggest that criminalsโ ability to stay emotionally neutral could mean theyโre simply less afraid of getting caught or punished.
The Findings Could Help Prevent Crime

By identifying high-risk personality types early, authorities and psychologists could intervene before crimes are committed. The study offers a roadmap for smarter prevention strategies.
The article is based on information from Videnskab.dk
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