The present study examined the relationship of psychological androgyny with ego development in the context of Loevinger's theory, and with psychosocial crisis resolution from the perspective of Erikson's theory. A sample of 30 male and 30 female adults completed the Bem Sex Role Inventory, the Washington University Sentence Completion Test and the Inventory of Psychosocial Development (IPD). The androgynous individuals were predominate in the higher stages of Loevinger's hierarchical model of ego development, with the masculine sex-typed orientation falling in between the androgynous and feminine sex-typed groups. The highest scores on psychosocial personality development, as assessed by the IPD, were obtained by those with an androgynous sex-role orientation, followed by those with masculine, feminine and undifferentiated orientations, in that order. These results support the view that psychological androgyny represents an added adaptive capacity that can be developed in association with the development of higher ego functioning. These findings applied equally to both sexes and all age groups. (Author)