MMPI profiles of men alcoholics, drug addicts and psychiatric patients.

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Abstract
The MMPI [Minnesota Multiphasic Personality Inventory] profiles of 65 men alcoholics (mean age, 42), 48 heroin addicts (mean age, 25) and 52 polydrug users (mean age, 25), all voluntary patients in a psychiatric clinic, were compared with each other and with those of 3 matched (by age, sex, race and education) control groups of psychiatric patients. The alcoholics scored significantly lower than their controls on scales K, Hs, Hy, Mf and R, and higher on scales Ma, MOR, HOS, FAM, AUT, PSY and HYP. The heroin addicts scored significantly higher than their controls on scale AUT and lower on SOC; and the polydrug users scored significantly lower than their controls on scales L, K and R, and higher on Ma, ORG, HEA, DEP, HOS, FAM, AUT, and HYP. When the profiles were classified into 5 code-type categories, the alcoholics did not differ significantly from their controls, while significantly more heroin addicts than their controls were neurotic (10 vs. 14%) and characterological (35 vs. 25%) and fewer were psychotic (23 vs. 57%), and more polydrug users were characterological (40 vs. 26%) and fewer were normal (2 vs. 20%). Further comparison of the code-type categories showed no influence of demographic variables in the 3 groups of patients, but among the control groups age and race were significantly related to category. There were no significant differences between the mean T scores of the alcoholics and heroin addicts, but the polydrug users scored significantly higher than did the alcoholics on scales Pd, Sc, DEP and FAM and lower on scale L.

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