Developed to assess symptoms of psychopathy, the Hare Psychopathy Checklist-Revised (PCL-R) is a diagnostic tool which allows people to rate their psychopathic or antisocial habits. The PCL-R is used for legal, clinical, or research purposes as a indicator of potential risk posed by subject or prisoners.
Two parts are include the Hare PCL-R test: a interview and a review of the subject’s file records and history. During the assessment, the administrator answers a 20-item test measuring psychopathic traits. Completion time is 90 to 120 minutes. The second edition (or revised edition) is the current version of the test.
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Robert D. Hare (2003)
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Reliability and Validity
The Hare Psychopathy Checklist is an established instrument for measuring psychopathy. Hare’s used a sample of 4,981 prison inmates and 1,246 inmates to calculate an alpha coefficient of 0.87 for both. Inter-rater reliability was also very high according to Rogers (2001). For a 5-year time period, the test-retest coefficient was presented at 0.89 (Schroeder, Schroeder, and Hare, 1983). Validity has been supported factor analysis studies (Hare, Harpur, Hakistan, Forth, & Hart, 1990) using samples of prisoner and forensic inpatients.
Administration, Analysis and Reporting
Statistics Solutions consists of a team of professional methodologists and statisticians that can assist the student or professional researcher in administering the survey instrument, collecting the data, conducting the analyses and explaining the results.
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Hare, R. D. (2003). Manual for the Revised Psychopathy Checklist (2nd ed.). Toronto, ON, Canada: Multi-Health Systems.
Hare, R. D., & Neumann, C. N. (2006). The PCL-R Assessment of Psychopathy: Development, Structural Properties, and New Directions. In C. Patrick (Ed.), Handbook of Psychopathy (pp. 58-88). New York: Guilford. View
Hare, Robert D. Dr. Robert Hare’s Page for the Study of Psychopaths. January 29, 2002 (cited April 5, 2002.) .
Hare, Robert D. Without Conscience: The Disturbing World of the Psychopaths Among Us. New York, NY: The Guilford Press, 1993. View
Verona E, Patrick CJ, Joiner TE (2001). “Psychopathy, antisocial personality, and suicide risk”. Journal of Abnormal Psychology 110 (3): 462–70
Vitacco, M. J., Neumann, C. S.,& Jackson, R.(2005). “Testing a four-factor model of psychopathy and its association with ethnicity, gender, intelligence, and violence.” Journal of Consulting and Clinical Psychology, 73, 466-76.
Dissertations and Journals
Freedman, M. David. “False prediction of future dangerousness: Error rates and Psychopathy Checklist-Revised.” Journal of the American Academy of Psychiatry and Law 29, no. 1 (March, 2001): 89-95.
Grann, M., N. Langström, A. Tengström and G. Kullgren. “Psychopathy (PCL-R) predicts violent recidivism among criminal offenders with personality disorders in Sweden.” Law and Human Behavior 23, no. 2 (April, 1999): 205-217.