In a study of the MMPI personality types of hospitalized men and women alcoholics, the Neurotic and Classic types had the characteristics of reactive alcoholism, and the Psychopathic, Schizoform A and Schizoform B types had the characteristics of essential alcoholism. Demographic variables and treatment prognosis also varied according to MMPI personality types.
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Conley et al. (1983) studied this question.
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