A research group used a scientific analysis to determine whether a group of serial killers thought to be psychopaths actually ...

“The pupil has long been known to be an indicator of a person’s arousal,” Burley explained. “The pupil usually dilates when an image shocks or scares us. The fact that this normal physiological ...

Many clinicians use the Revised Psychopathy Checklist (PCL-R), which scores you on 20 factors outlined in the table below. People with psychopathy (PwP) tend to score higher on the interpersonal ...

To determine levels of psychopathy, the team used a common assessment called the 'Hare Psychopathy Checklist - Revised' ...