The
Hare Psychopathy Checklist-Revised (PCL-R) is a diagnostic tool used to rate a person's psychopathic or antisocial tendencies. People who are psychopathic prey ruthlessly on others using charm, deceit, violence or other methods that allow them to get with they want. The symptoms of psychopathy include: lack of a conscience or sense of guilt, lack of empathy, egocentricity,
pathological lying, repeated violations of social norms, disregard for the law, shallow emotions, and a history of victimizing others.
Originally designed to assess people accused or convicted of crimes, the PCL-R consists of a 20-item symptom rating scale that allows qualified examiners to compare a subject's degree of psychopathy with that of a
prototypical psychopath. It is accepted by many in the field as the best method for determining the presence and extent of psychopathy in a person.
Purpose
The PCL-R is used for diagnosing psychopathy in individuals for clinical, legal or research purposes. Developed in the early 1990s, the test was originally designed to identify the degree of a person's psychopathic tendencies. Because psychopaths, however, are often repeat offenders who commit sexual assaults or other violent crimes again and again, the PCL-R is now finding use in the courtroom and in institutions as an indicator of the potential risk posed by subjects or prisoners. The results of the examination have been used in forensic settings as a factor in deciding the length and type of prison sentences and the treatment subjects should or should not receive.
Many studies conducted in North America and Europe attest to the value of the PCL-R for evaluating a person's degree of psychopathic traits and, in many cases, for predicting the likelihood of future violent behavior. Some critics, however, are more skeptical about its value.
Description
The Hare PCL-R contains two parts, a semi-structured interview and a review of the subject's file records and history. During the evaluation, the clinician scores 20 items that measure central elements of the psychopathic character. The items cover the nature of the subject's interpersonal relationships; his or her affective or emotional involvement; responses to other people and to situations; evidence of social deviance; and lifestyle. The material thus covers two key aspects that help define the psychopath: selfish and
unfeeling victimization of other people, and an unstable and antisocial lifestyle.
The twenty traits assessed by the PCL-R score are:
- glib and superficial charm
- grandiose (exaggeratedly high) estimation of self
- need for stimulation
- pathological lying
- cunning and manipulativeness
- lack of remorse or guilt
- shallow affect (superficial emotional responsiveness)
- callousness and lack of empathy
- parasitic lifestyle
- poor behavioral controls
- sexual promiscuity
- early behavior problems
- lack of realistic long-term goals
- impulsivity
- irresponsibility
- failure to accept responsibility for own actions
- many short-term marital relationships
- juvenile delinquency
- revocation of conditional release
- criminal versatility
The interview portion of the evaluation covers the subject's background, including such items as work and educational history; marital and family status; and criminal background. Because psychopaths lie frequently and easily, the information they provide must be confirmed by a review of the documents in the subject's case history.
Results
When properly completed by a qualified professional, the PCL-R provides a total score that indicates how closely the test subject matches the "perfect" score that a classic or prototypical psychopath would rate. Each of the twenty items is given a score of 0, 1, or 2 based on how well it applies to the subject being tested. A prototypical psychopath would receive a maximum score of 40, while someone with absolutely no psychopathic traits or tendencies would receive a score of zero. A score of 30 or above qualifies a person
for a diagnosis of psychopathy. People with no criminal backgrounds normally score around 5. Many non-psychopathic criminal offenders score around 22.
Read more:
http://www.minddisorders.com/Flu-Inv/Hare-Psychopathy-Checklist.html#ixzz3ahY4DZcS
