The beginnings of wisdom about aging.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D004651:Employment; D005239:Fear; D006262:Health; D006801:Humans; D007899:Leisure Activities; D008132:Loneliness; D008875:Middle Aged; D010549:Personal Satisfaction; D011057:Politics; D011639:Public Opinion; D012179:Retirement; D012649:Self Concept; D012919:Social Behavior; D012924:Social Conditions; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014481:United States