The clinical utility of the MMPI-2 Antisocial Practices Content Scale

This study explored the ability of the MMPI-2 Antisocial Practices Content Scale (ASP) to correctly classify DSM-IV Antisocial Personality Disorder (APD). ASP scores and scores on the MMPI-2 Psychopathic Deviate (Pd) scale were compared in an APD group (n = 10), a Borderline Personality Disorder group (n = 16), a Narcissistic Personality Disorder group (n = 9), an Other Personality Disorder group (representing personality disorders from Clusters A and C; n = 14), and a nonclinical population (NC; n = 67). The ASP exhibited an ability to differentiate APD from other personality disorders and was significantly correlated to DSM-IV diagnostic criteria for APD while the Pd was not. Diagnostic efficiency statistics (sensitivity, specificity, positive predictive power, negative predictive power, overall correct classification rate, and kappa) were calculated under four different conditions in a clinically relevant manner (Kessel & Zimmerman, 1993. Psychological Assessment, 53, 395-399). The results of this study illustrate the usefulness of the ASP as a tool for the assessment of antisocial attitudes, beliefs, and behaviors in individuals suspected of having APD. This information may be valuable to clinicians who are planning treatment or assessing treatment outcome for clients with APD.