title: Adult development theories and Erik Erikson's life-cycle model.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003243:Consciousness; D003674:Defense Mechanisms; D005260:Female; D006803:Human Development; D006801:Humans; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D011582:Psychological Theory; D014930:Women / Q000523:psychology