Millions recently flocked to the movies to watch Joker, the origin story of Batman’s notorious nemesis. Many have commented that the film is a portrait of a textbook psychopath. But perhaps the bigger ...

When it comes to measuring psychopathy, perhaps the favorite instrument used by forensic psychologists and psychiatrists is the Hare Psychopathy Checklist-Revised (PCL-R), developed by Canadian ...

After its publication in 1991, the Psychopathy Checklist-Revised (PCL-R) became established as the “gold standard” for determining the extent to which an individual possesses psychopathic ...

Millions recently flocked to the cinema to watch Joker, the origin story of Batman’s notorious nemesis. Many have commented that the film is a portrait of a textbook psychopath. But perhaps the bigger ...