Development and validation of ego-identity status.
D000124:Achievement; D000293:Adolescent; D000328:Adult; D001318:Authoritarianism; D003210:Concept Formation; D003674:Defense Mechanisms; D006801:Humans; D008297:Male; D011340:Problem Solving; D011581:Psychological Tests; D012649:Self Concept; D013312:Stress, Physiological