The present study used meta-analytic techniques (number of samples = 92) to determine the patterns of mean-level change in personality traits across the life course. Results showed that people increase in measures of social dominance (a facet of extraversion), conscientiousness, and emotional stability, especially in young adulthood (age 20 to…

The basic issue underlying this research is whether or not adult personality structures change after maturity is reached. Problems involved in the longitudinal study of psychological variables are discussed and 2 feasible designs applied in an effort to differentiate the effects of chronological age, secular trends, generation differences, as well…

In this longitudinal study, 60 mothers rated their toddler's personality traits concerning social relations and exploration of the physical and social world. Data showed that mothers of toddlers from older cohorts were more likely to have stable and consistent, but not more negative, perceptions of their child's personality over six months than…

The individuation process was explored from a social-cognitive perspective using 61 kibbutz adolescents and youth in grades 4, 7, and 10, and post-high school in military service. Results support the developmental sequence of the individuation construct in kibbutz adolescents and fit the model proposed by A. Mazor (1985). (SLD)

Administered translations of the Revised NEO Personality Inventory to adults in Germany, Italy, Portugal, Croatia, and South Korea. Found declines in neuroticism, extraversion and openness, and increases in agreeableness and conscientiousness age for both men and women. Results support hypothesis that age differences reflect universal maturational…