A longitudinal study of moral and ego development in young adults

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Abstract
The purpose of this study was to investigate the longitudinal changes in moral judgment and ego development in a young adult sample when a concurrent measure of verbal ability was used as a statistical control. Sixty-one late adolescents and young adults, representing three educational groups, were tested in 1977 and 1979 on the Defining Issues Tests, a measure of moral judgment (Rest), the Sentence Completion Test of Ego Development (Loevinger and Wessler) and Terman's Concept Mastery Test, a measure of verbal ability. No group or time differences were found in ego development. A significant increase was found between the 1977 and 1979 moral judgment scores,ppp<0.01, with females scoring higher than males, which were statistically accounted for by verbal ability. These findings suggest that moral development continues into the young adult years and that verbal ability may moderate sex differences in moral judgment.