Two groups of chronic schizophrenic patients were treated with intensive psychotherapy for a period of two years, starting in 1962 and 1964. Half of the patients also took phenothiazines. Control groups at a local state hospital received phenothiazines but no psychotherapy. A follow-up of the groups on three tests of adjustment, administered at the end of 1967, indicated some trends toward better adjustment by patients who had received psychotherapy but there were no statistically significant differences among the groups.
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Messier et al. (1969) studied this question.
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