Psychopathy Checklist
The Psychopathy Checklist or Hare Psychopathy Checklist-Revised, now the Psychopathy Checklist—revised (PCL-R), is a psychological assessment tool most commonly used to assess the presence of psychopathy in individuals—most often those institutionalized in the criminal justice system—and to differentiate them from those suffering from antisocial personality disorder, a similar but distinct illness. It is a 20-item inventory of perceived personality traits and recorded behaviors, intended to be completed on the basis of a semi-structured interview along with a review of 'collateral information' such as official records.

The PCL was originally developed in the 1970s by Canadian psychologist Robert D. Hare for use in psychology experiments, based partly on Hare's work with male offenders and forensic inmates in Vancouver, and partly on an influential clinical profile by American psychiatrist Hervey M. Cleckley first published in 1941.

An individual's score may have important consequences for their future, and because the potential for harm if the test is used or administered incorrectly is considerable, Hare argues that the test should be considered valid only if administered by a suitably qualified and experienced clinician under scientifically controlled and licensed, standardized conditions. Hare receives royalties on licensed use of the test.

In psychometric terms, the current version of the checklist has two factors (sets of related scores) that correlate about 0.5 with each other, with Factor One closer to Cleckley's original personality concept than Factor Two. Hare's checklist does not incorporate the "positive adjustment features" that Cleckley did.
None
psychological assessment
UNK
Q366886
psychopathy
Concept
Q118418
antisocial personality disorder
Concept
Q18773
personality traits
UNK
Q1477475
semi-structured interview
UNK
Q974718
Robert D. Hare
PER
Q475042
psychology experiments
Concept
Q2237214
Hervey M. Cleckley
PER
Q728265
royalties
Concept
Q506132
psychometric
Concept
Q1033930
Psychopathy Checklist
MEDIA
Q1033930
Psychopathy Checklist
MEDIA
Q1033930
Psychopathy Checklist
MEDIA
1970-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1970
DATE
1941-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1941
DATE
+20^^http://www.w3.org/2001/XMLSchema#decimal
20
NUMBER
+0.5^^http://www.w3.org/2001/XMLSchema#decimal
0.5
NUMBER
creator
inception
said to be the same as