This study replicated an earlier study which identified five subtypes of outpatient alcoholics (Uninvolved, Participation, Ambivalent, Precontemplation, Contemplation) according to the stages of change model, extending the effort to 404 polydrug users at a Veterans Administration hospital. Subjects were administered a demographic questionnaire; the Alcohol Use Disorders Identification Test (AUDIT); modified drug, psychiatric and legal sections of the Addiction Severity Index (ASI); the Short Michigan Alcoholism Screening Test (SMAST); the Drug Abuse Screening Test (DAST); and the University of Rhode Island Change Assessment Scale (URICA). Scores on the URICA were subjected to a cluster analysis, yielding four of the five profiles identified in the earlier alcoholism study. Since four out of the five profiles were nearly identically replicated in a more diverse substance abuse population, there do appear to be reliable differences in motivation as measured by the URICA in individuals applying for a variety of addiction treatment services. Continued replication of the profiles in different settings may clarify the parameters of the Uninvolved cluster not replicated in the current study. Members of the Precontemplation cluster scored significantly lower on the SMAST, DAST, and AUDIT; were significantly more likely to have had legal pressure to enter treatment; and were more likely to be referred to outpatient or community services than to inpatient treatment. The results are interpreted as suggesting that differences between the four clusters are most meaningful between the Precontemplation and successive stages of change. (Author/NB)