It’s estimated that around 1% of the general population could be classified as a clinical psychopath. In prisons, it’s closer to 15-25%. These estimates are based on the Psychopathy Checklist Revised, commonly known as the PCL-R.
Created by forensic psychologist Robert Hare, The PCL-R is a 20-item instrument inspired by psychiatrist Hervey Cleckley’s cli…
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