| The Millon Adolescent Clinical Inventory (MACI), a self-report measure of psychopathology, and the Psychopathy Checklist: Youth Version (PCL: YV), were administered to four community treatment facility samples of male and female youth with histories of conduct disturbance (N = 40). The PCL: YV Total Score demonstrated positive and moderate correlation with scores on the parent MACI Unruly, Forceful, and Impulsive Propensity scales, providing evidence of concurrent validity for the parent MACI. The MACI Psychopathy Content Scale (MACI PCS) demonstrated a significant and positive relationship with the PCL: YV Total Score (R = .35, p < .05) and, notably, the PCL: YV Factor 1 component (R = .46, p < .01) purported to assess core personality-trait aspects of psychopathy. The MACI "high psychopathy" group profile in this study consisted of relatively depressed scores on the Submissive, Conforming, Sexual Discomfort, and Anxious Feelings scales; and relatively elevated scores on the Unruly, Forceful, and Impulsive Propensity scales, including the MACI PCS. Discriminant function analysis using MACI PCS cut-off values of 6 and 9 to predict "high psychopathy" (PCL: YV Total Score ≤ 21; n = 8) versus "low psychopathy" group (PCL: YV Total Score ≤ 9; n = 9) membership resulted in accurate classification of 64% to 70% of the cases (sensitivity range = 75% to 87%). Results were discussed in terms of the parent MACI and MACI PCS as potential screening tools for adolescent psychopathy. |
