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 ...
It seems obvious that anyone who willfully and repeatedly commits murder is a psychopath: remorseless, egotistical, manipulative, and cruel. Think of Ted Bundy, Dennis Rader, or John Wayne Gacy.
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