Relationship of MMPI scores of drug-abusers to personal variables and type of treatment program

The MMPI scores for drug-abusers admitted to a multimodality treatment program (N=324) were analyzed to determine the extent of MMPI scale differences due to basic personal variables (age, sex, race), as well as type of program entered (drug-free vs. methadone-based) and program environment (residential vs. ambulatory). The results support the view that the MMPI group profile for drug-abusers, characterized by a substantially elevated Pd scale and somewhat less elevated scores on most other diagnostic scales, is relatively invariant and not substantially affected by personal background or program differences.