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- Dåderman, Anna Maria, 1953-, et al.
(author)
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Degree of psychopathy : implications for treatment in male juvenile delinquents
- 2003
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In: International Journal of Law and Psychiatry. - Oxford : Pergamon Press. - 0160-2527 .- 1873-6386. ; 26:3, s. 301-315
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Journal article (peer-reviewed)abstract
- Longitudinal studies have consistently shown that psychopathy in adulthood has its roots in childhood. The psychopathy concept described by Cleckley (1976) involves interpersonal, affective, and behavioral aspects. Moreover, children who show low levels of anxiety respond more poorly to treatment. The aim of the present study was to assess psychopathy in 56 male juvenile delinquents with conduct disorder, treated in youth correctional institutions for severe offenders. We used a modified Psychopathy Checklist-Revised (PCL-R) that has been used for young people (Forth et al., 1990). Each participant received PCL-R assessments from one rater, based on the file information and an extensive interview. Twenty-eight participants (50%) were rated by the second rater. Both the ICC and Cohens’s kappa revealed that the PCL-R ratings were reliable: the ICC(2,1) of the PCL-R total scores was 0.90, F(27, 28) = 11.70, P < .0001; Cohen’s kappa = 0.64, P < .001. The final scores on the PCL-R showed that the base rate for psychopathy (defined as a score of 30 or more) in the sample was 59% (33 of 56 juvenile delinquents). The mean PCL-R total score for all 56 participants was 29.3 (S.D. = 7.8), and ranged between 12 and 40. The high rates of psychopathy found in juvenile delinquents with conduct disorder should alert clinicians to the necessity of psychopathy scoring, and shows that high-quality treatment programs are needed. Psychopathy is not currently considered when assessing and treating young people in state-administered observational and correctional institutions for juvenile delinquents in Sweden.
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- Dåderman, Anna Maria, 1953-, et al.
(author)
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Psychopathy-related personality traits in male juvenile delinquents : an application of a person-oriented approach
- 2004
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In: International Journal of Law and Psychiatry. - Göttingen : Elsevier. - 0160-2527 .- 1873-6386. ; 27:1, s. 45-64
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Journal article (peer-reviewed)abstract
- Some personality characteristics, such as impulsiveness, thrill seeking, and the need for change, are clearly relevant when studying psychopathy. Psychopaths are certainly avid sensation seekers. The primary aim of the present study was to identify common patterns with respect to psychopathy-related personality traits in a sample of 56 juveniles from four Swedish national correctional institutions for juvenile delinquents. Karolinska Scales of Personality (KSP), the Impulsiveness scale from the Impulsiveness–Venturesomeness–Empathy (IVE) inventory and the Total Sensation-Seeking scale from the SSS-V were used to determine personality traits. Cluster analysis was performed with SLEIPNER. Ward’s hierarchical minimum variance clustering method was used. We discovered seven clusters of participants. The mean T scores of the profiles of personality traits in the clusters (the cluster centroids) have been used to describe the clusters. Three multideviant clusters emerged, into which 31 (63%) of the classified participants could be placed. To describe the clusters, the prevalence of participants with a high degree of psychopathy (cutoff PCL-R score 27or above) was computed for each cluster and was complemented with data on previous treatment occasions and reoffending. The results indicated that psychopaths may develop different personality pattern; each cluster contained participants with high values of the PCL-R. Deviant personality is not currently considered when assessing and treating people in state administered observational and correctional institutions for juvenile delinquents in Sweden. The present results suggest that young people with psychopathy are not a homogenous group but may develop various personality traits. This should have implications for risk assessment and treatment.
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