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A heroin addiction scale for the MMPI: effectiveness in differential diagnosis in a psychiatric setting.

This study examined the discriminative utility of the Cavior Heroin Addiction Scale (HE) in separating samples of male heroin addict, alcoholic, and polydrug abuser samples from psychiatric control samples matched on sex, age, race, and education level. Heroin addicts were the only substance abuser samples that did not differentiate from its control sample. Heroin addicts obtained higher mean HE values than did the alcoholics although the polydrug abusers obtained higher mean HE values than both alcoholics and heroin addicts. HE was found to be less successful in separating these samples than was the MacAndrew Alcoholism Scale. This poorer performance is related to HE's confounding systematic relation to subject age and race, or to differences in scale construction methodology.