This study was undertaken to examine possible relationships among sex-role types, self-concept, and length of incarceration in residents at a federal minimum security co-correctional prison. Twelve female and 53 male subjects completed the Zung Self-rating Depression Scale, StateTrait Anxiety Scale, Bern Sex-Role Inventory, Marlowe-Crowne Social Desirability Scale, Self-Concept Scale, and a Reaction to Imprisonment Q-sort. MMPI scores and demographic data for each subject were obtained from institution records. Subjects were divided into three groups (New, N = 25; Three Month, N = 20; and One Year, N = 20) on the basis of the length of time they had been incarcerated. Those in the New group were retested with all instruments except the MMPI after they had been imprisoned approximately three months. Instruments were administered only once to the other groups. On the basis of scores on the Bern Sex-Role Inventory, subjects were classified by sex—role type (masculine, feminine, androgynous, or undifferentiated). Discriminant function analyses were used as an initial screen to determine which of the dependent variables might contribute to the "simple effects" factors of the main multivariate analysis of variance procedure.