The main sign that you may be a psychopath has been revealed.

A new study has identified a key sign that a person may be a psychopath. Australian scientists conducted striking experiments with more than 200 volunteers and reached interesting results.

Those who scored high on the psychopathy scale had difficulty regulating their focus, meaning they were better at seeing the big picture but not as good at small details. In a social situation—whether it’s an office meeting or a get-together with friends—this means psychopaths quickly lose interest in subtle details or have difficulty noticing them.

Psychopathy is a personality disorder that affects approximately 1% of the population and is characterized by antisocial behavior and an extreme lack of empathy or remorse.

Psychopaths on screen include American Psycho’s Patrick Bateman, played by Christian Bale, and The Talented Mr., played by Matt Damon. Ripley’s Tom Ripley is featured.

Previous research on psychopathy has shown that the most extreme psychopaths keep their heads still when talking, perhaps hiding clues about their personality. Meanwhile, another recent study shows that people who can tolerate more pain are more likely to become psychopaths.

“There are many dimensions to psychopathic personality traits, including egocentrism, insensitivity, impulsivity and antisocial behavior,” Australian researchers told PsyPost. “Our results suggest that people who exhibit higher levels of impulsivity and antisocial behavior have difficulty regulating the focus of their attention,” they added.

People typically called psychopaths exhibit personality traits such as antisocial behavior, deceitfulness, irresponsibility, egocentrism, callousness, and a lack of remorse or empathy.

A previous study had revealed how well Russians know their neighbors. Read about it here.