College students (N = 37) who volunteered to participate in sensitivity training groups were compared on a number of measures of psychological adjustment with a random sample (N = 40) of those who did not volunteer to participate. Subjects were administered the Mini-Mult form of the MMPI, the MMPI Social Introversion scale, the Beck Depression Inventory, a problem checklist, and a questionnaire dealing with history of, and treatment for, mental and emotional problems. Statistical analyses indicated no significant differences between volunteers and nonvolunteers on any of the indices of psychological adjustment.
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