Psychopathic features in a juvenile diversion population: reliability and predictive validity of two self-report measures.

The reliability and predictive validity of two experimental self-report versions of two measures of psychopathic features in youth, the Antisocial Process Screening Device (APSD: Frick & Hare, 2001) and a modified version of the Child Psychopathy Scale (CPS: Lynam, 1997) were examined in a sample of 69 arrested youth (M age = 14.4 years) referred to a juvenile diversion program. Parents or legal guardians completed parent-rating versions of the same measures. Reliability indicators for the APSD total measure were satisfactory although internal consistency indices (coefficient alpha) for the Callous/Unemotional and Impulsive/Conduct Problems scales were slightly lower than desirable. Reliability indicators for the CPS were excellent after deleting items that had poor corrected item-to-CPS total score correlations. Positive and statistically significant correlations for all measures were obtained with prospective measures of program failure (range 0.22-0.36) and rearrest at 1 year follow-up (range 0.33-0.56). Although further research is needed prior to the clinical use of these measures, these results signal the potential of such measures to inform clinical judgments regarding treatment compliance and risk with justice-involved youth. Copyright 2003 John Wiley & Sons, Ltd.