COMPARISON OF MMPI-2 AND MMPI CLINICAL-SCALES AND HIGH-POINT SCORES AMONG METHADONE-MAINTENANCE CLIENTS

Methadone client volunteers completed the Minnesota Multiphasic Person ality Inventory (MMPI; Hathaway & McKinley, 1967) and MMPI-2 (Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) on consecutive days. MM PI-2 T-scores were lower by a mean of 4.7 on the clinical scales; when 5 points were added to MMPI-2 T-scores the mean difference was 2.3. R ank order of subjects on scale T-scores was not significantly differne nt between the two instruments. High-point similarity for clinically e levated profile pairs ranged from 61% to 92%, depending upon definitio n of similarity.