Many well-established developmental theories concentrate on strategies of regulation and try to explain how individuals compensate for possible losses in old age. In public debates, and in laypeople's perception of aging, however, activity and productivity seem to be central concepts associated with successful aging. The present research focuses…

A developmental theory of adult intelligence is proposed called PPIK. The PPIK theory integrates intelligence as process, personality, interests, and intelligence-as-knowledge. Data from the study of knowledge structures are examined in the context of the theory and in relation to measures of content abilities. (SLD)

This article summarizes results from studies of the organization and development of cognitive abilities in adults aged 20 to 60 years old. Theories of intelligence stipulating a hierarchy of intellectual functions, with fluid and crystallized intelligence at the top, are supported. Six conclusions on age differences are offered. (Author/RD)

Three studies examined naturalistic concepts of moral maturity in young through older adults to develop a more comprehensive understanding of moral excellence than in dominant theories. Findings indicated that naturalistic notions of moral excellence contained themes of principled reasoning, also referenced aspects of moral character and virtue…

Transcripts of the spontaneous remarks of adult visitors to a fine arts museum were analyzed according to four models of aesthetic experience. An expanded alternative model is proposed that incorporates some features from each model to better describe how visitors respond to the aesthetic experience. (SLD)

This special issue of the Mensa Research Journal contains four papers written by K. Warner Schaie, a psychologist who focuses on psychological development from young adulthood through old age. The first paper is "Living with Gerontology." In it, Schaie recounts his own childhood, adolescence, and young adulthood, his path to becoming a…

Theories of life cycle phases, adult development, and adult motivation to learn provide a basis for planning and developing campus activities to attract the attention of this market. (MSE)