This longitudinal case study from a Complex Dynamic Systems Theory (CDST) perspective touches upon an under-researched issue: L1 development over the lifespan. Levinson (1978) predicts three stages in adulthood: early, mid and late, with a decline in late adulthood. We examine Diane Larsen-Freeman's publications over a period of 50 years (from age…

In this longitudinal Canadian study, we investigated the relationship between the developmental trajectories of community involvement and generative concern measured at ages 23, 26, and 32. Participants completed a questionnaire on youth involvement, the Youth Involvement Inventory (YII), and the Loyola Generativity Scale (LGS) at all 3 ages. A…

In Western cultures, life narratives are typically expected to recount the narrator's life from birth to the present. Disparate autobiographical memories need to be integrated into a more or less coherent story, which is facilitated by an overarching temporal macrostructure. The temporal macrostructure consists of elaborated beginnings that…

Happiness is an important indicator of well-being, and little is known about how it changes in the early adult years. We examined trajectories of happiness from early adulthood to midlife in 2 Canadian longitudinal samples: high school seniors followed from ages 18-43 and university seniors followed from ages 23-37. Happiness increased into the…

This study examined longitudinal changes in coping and defense mechanisms in an age- and gender-stratified sample of 392 European American adults. Nonlinear age-related changes were found for the coping mechanisms of sublimation and suppression and the defense mechanisms of intellectualization, doubt, displacement, and regression. The change…

The invariance of factor structures in the Guilford Zimmerman Temperament Survey is clearly evident. Basic personality structure appears little affected by social and historical change. Results favor the stability model for objectively measured personality traits in adult males. (JAC)

Neuroticism was related negatively and extraversion was related positively to most concurrent measures of well-being in both younger and older subsamples. Predictive correlations between personality and subjective well-being showed that enduring personality dispositions antedate and predict measures of personal adjustment to aging. (Author)

Only a longitudinal study, in which retrospective reports can be verified against data collected earlier, can determine what topics tend to be reported accurately and whether certain types of individuals are more likely to be accurate reporters. A representative group of adults (N=60) who became parents 50 years ago are now part of the oldest and…

This report of the hearing before the Senate Committee on Aging concerns the question of aging and its effects on learning and working. Statements by witnesses are recorded to present the results of ongoing longitudinal studies focused on the effects of biological aging and the measurement techniques used to analyze variables associated with…

A major issue concerning adult intellectual development is whether intellectual decline in late adulthood is uniform or ability-specific. Differential patterns of ability decline were analyzed by comparing data on longitudinal age change over the age range from 53 to 81 years from two successive 14-year periods (1956-1970 and 1970-1984). The…

Only a longitudinal study, in which retrospective reports can be verified against data collected earlier, can determine what topics tend to be reported accurately and whether certain types of individuals are more likely to be accurate reporters. A representative group of adults who became parents 50 years ago are now part of the oldest and longest…

Only a longitudinal study, in which retrospective reports can be verified against data collected earlier, can determine what topics tend to be reported accurately and whether certain types of individuals are more likely to be accurate reporters. A representative sample of women who became mothers 50 years ago are now part of the oldest and longest…

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…

Only a longitudinal study, in which retrospective reports can be verified against data collected earlier, can determine what topics tend to be reported accurately and whether certain types of individuals are more likely to be accurate reporters. A representative group of adults who became parents 50 years ago are now part of the oldest and longest…

Summarizes the conduct and results of the Seattle Longitudinal Study, an investigation that has assessed mental abilities in more than 5,000 adults and has followed some for as long as 35 years. Integrative findings are presented on age changes, cohort differences, factor structure, individual differences, and interventions. (SLD)