Examines voluntary associations of the aged. A substantial majority of respondents were affiliated and more than one-half had multiple affiliations. Women were more active in voluntary groups than men. Those belonging to multiple associations were more active in each association than individuals with only one affiliation. (Author)

Attempts to replicate research on the activity theory of aging. Behaviorally based activity scales were drawn from daily activity inventories of residents of three retirement communities. Findings support the activity theory. Informal activities had the most positive affect on respondents' life satisfaction. (Author/JAC)