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 ...

In November 2009, Robert Dixon took a test to determine whether he was a psychopath. After 26 years in prison, he was due for a parole hearing. In California, before a "lifer" like Dixon appears ...

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 ...

Does an academic's use of legal threats to stop a critical paper from being published subvert the peer review process, which is fundamental to modern scientific research? A leading psychopathy ...

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 ...

Fifty years ago, his chilling experiences as a prison psychologist led Robert Hare on a lifelong quest to understand one of humanity’s most fascinating — and dangerous — disorders. Robert Hare steps ...

We studied 18 normal intelligence right-handed adult male volunteers: nine with high PCL-R scores (mean 28.4, range 25–34), aged 34±12 years, with full-scale IQ (FSIQ) 94±7, and nine healthy male ...