![]() ![]() ![]() Homicidal adolescents with psychopathy-like personality character form a special subgroup among other homicidal youngsters. The adults, however, showed more both affective and interpersonal features of psychopathy. Homicidal boys behaved as antisocially as the homicidal adults. They also more often had parental criminal history as well as homicide history of parents or near relatives than the group scoring low on the PCL-R. These boys significantly more often had a crime history before the index homicide, more frequently used excessive violence during the index homicide, more rarely lived with both parents until 16 years of age, had more institutional or foster home placements in childhood, had more school difficulties, more often had received special education, and, more often had contact with mental health services prior to age 18 years than boys scoring low on the PCL-R. One in five homicidal male adolescents met criteria for psychopathic personality using a PCL-R total score of 26 or higher. The adolescent group was divided into two subgroups according to PCL-R total scores. Adults scored significantly higher on factor 1 (interpersonal/affective) and facets 1 (interpersonal) and 2 (affective). No significant differences existed between the adolescents and adults in PCL-R total scores, factor 2 (social deviance) scores, or in facets 3 (lifestyle) and 4 (antisocial). Offence and offender characteristics were collected from the files and a file-based assessment of psychopathic traits was performed using the Hare Psychopathy Checklist-Revised (PCL-R) by trained raters. A random sample of 57 adult male homicide offenders was selected as a comparison group. Methodsįorensic psychiatric examination reports and crime reports of all 15 to19- year- old male Finnish offenders who had been subjected to a forensic psychiatric examination and convicted for a homicide during 1995–2004 were collected (n = 57). ![]() A further aim was to investigate associations between psychopathic traits and offender and offence characteristics in adolescent homicides. In 2005, the Buros Mental Measurements Yearbook review listed the PCL-R as "a reliable and effective instrument for the measurement of psychopathy and is considered the 'gold standard' for measurement of psychopathy.The aim of the study was to evaluate psychopathy-like personality traits in a nationwide consecutive sample of adolescent male homicide offenders and to compare the findings with those of a randomly sampled adult male homicide offender group. The PCL-R was reviewed in Buros Mental Measurements Yearbook (1995), as being the "state of the art" both clinically and in research use. They play an important role in most recent risk-for-violence instruments. The PCL-R and PCL:SV are strong predictors of recidivism, violence and response to therapeutic intervention. The Hare Psychopathy Checklist-Revised, with demonstrated reliability and validity, is rapidly being adopted worldwide as the standard instrument for researchers and clinicians. He is also a co-author of the Guidelines for a Psychopathy Treatment Program. Hare has spent over 35 years researching psychopathy and is the developer of the Hare Psychopathy Checklist-Revised (PCL-R), and a co-author of its derivatives, the Psychopathy Checklist: Screening Version (PCL:SV), the P-Scan, the Psychopathy Checklist: Youth Version (PCL:YV), and the Antisocial Process Screening Device (APSD). PCL-R PCL:SV P-SCAN PCL:YV APSD TREATMENT GUIDELINES SRP:4 HOMEĭr. Robert Hare's Web Site devoted to the study of Psychopathy
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