Abstract
The Rutgers Alcohol Problem Index (RAPI) was used to assess negative consequences due to both alcohol and drug use. Data were collected from 173 substance using homeless adolescents (13–19 years of age, 58% male) who were grouped based on the substances rated: alcohol only, alcohol and drugs, or drugs only. The RAPI retained good internal consistency across substance categories, exhibited strong measurement construct congruence, and good convergent validity based upon correlations with assessed DSM diagnostic criteria (both dependence and abuse). Discussion focuses on the RAPI as a reliable instrument for the measurement of negative consequences for alcohol and drug use.
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