Old age as a phase of human life. Questionnaire study.
D000223:Adaptation, Psychological; D000293:Adolescent; D000328:Adult; D000368:Aged; D003405:Creativity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010552:Personality Assessment; D010555:Personality Inventory; D012179:Retirement; D011795:Surveys and Questionnaires