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Cover of Hare's Psychopathy Checklist-Revised (2nd ed., 2003). The Psychopathy Checklist or Hare Psychopathy Checklist-Revised, now the Psychopathy Checklist—revised (PCL-R), is a psychological assessment tool that is commonly used to assess the presence and extent of psychopathy in individuals—most often those institutionalized in the criminal justice system—and to differentiate those ...
Hare redrafted the checklist in 1985 following Cleckley's death in 1984, renaming it the Hare Psychopathy Checklist Revised (PCL-R). It was finalised as a first edition in 1991, when it was also made available to the criminal justice system, which Hare says he did despite concerns that it was not designed for use outside of controlled ...
In 1980, Canadian psychologist Robert D. Hare introduced an alternative measure, the "Psychopathy Checklist" (PCL) based largely on Cleckley's criteria, which was revised in 1991 (PCL-R), [119] [120] and is the most widely used measure of psychopathy. [121]
Ronson visits purported psychopaths, as well as psychologists and psychiatrists who have studied them, particularly Canadian psychologist Robert D. Hare, the eponymous author of the Hare Psychopathy Checklist, a 20‑part test administered to detect psychopathy. Ronson explores the idea that many corporate and governmental leaders are ...
[1] [2] In contrast to other psychopathy measures, such as the Hare Psychopathy Checklist (PCL), the PPI is a self-report scale, rather than an interview-based assessment. It is intended to comprehensively index psychopathic personality traits without assuming particular links to anti-social or criminal behaviors.
However, Robert D. Hare, a psychologist working in criminology, developed an influential Psychopathy Checklist based on the psychopath construct developed by Cleckley. Later two items were removed from the checklist in order to more clearly represent the structure of a two-factor analysis. [20]
The LSRP is partially based on Robert D. Hare's diagnostic Psychopathy Checklist-Revised (PCL-R) and consists of 26 statements which participants must decide their attitudes towards using a 4-point Likert scale ("disagree strongly", "disagree somewhat", "agree somewhat" and "agree strongly").
From Cleckley's work and conceptualization of psychopathy, Canadian psychologist Robert Hare developed the Psychopathy Check List (PCL-R), which was designed to detect and measure the presence of psychopathy. Hare formulated psychopathy into two factors: factor one (primary) which he defines as “selfish, callous and remorseless use of others ...