This study examined whether changes in children's self-reported Big Five dimensions are represented by (developmental) personality types, using a cohort-sequential design with three measurement occasions across 5 years (four cohorts, 9-12 years at T1; N = 523). Correlates of, and gender differences in, type membership were examined. Latent…

Links among concurrent and longitudinal changes in pubertal development and empathic ability from ages 10 to 13 and neural responses while witnessing peer rejection at age 13 were examined in 16 participants. More advanced pubertal development at age 13, and greater longitudinal increases in pubertal development, related to increased activity in…

Examined the relation between authoritative parenting and school achievement in 120 adolescents of 10-16 years. Adolescents who described their parents as treating them warmly, democratically, and firmly were more likely than their peers to develop positive attitudes toward their achievement and do well in school. (RJC)

Investigated effects of pubertal, social, and biological factors on negative affect of 103 White girls aged 10 t0 14 years. Results indicate that social factors, and the interaction of negative life events and pubertal factors, accounted for more variance than did hormonal pubertal factors alone. (RJC)

Examined age differences in 9- to 15-year-olds' experiences with families and friends, and by themselves. Amount of time spent with family decreased with age. Affect with family became less positive through seventh grade; affect with friends became more favorable with age; affect when alone did not vary. (BC)

Examines the development of, and interrelations among, three types of autonomy during the transition from childhood into adolescence: emotional autonomy in relationships with parents, resistance to peer pressure, and the subjective sense of self-reliance. (HOD)

Analyzed correlates of social problem solving in 63 2-parent families with a preadolescent. Structured interviews were held when child was about 9.5 years old, and again 2 years later. Found a substantial decline in the quality of family problem solving during preadolescence associated with changes in the participation and affective behavior of…

Forty-two families with children in transition to early and mid-adolescence were interviewed in a follow-up study of parent-child agreement in beliefs concerning the child, and of children's awareness of parental beliefs. Results indicate increases in accuracy of prediction of parental beliefs by children between the ages of 10 and 13. (RJC)

Examined precursors and correlates of sexual intercourse patterns among 10th- and 11th-graders. The transition to onset of sexual intercourse was associated with increases in delinquency and slower increases in school grades. Earlier onset and a more persistent pattern of sexual intercourse were associated with more childhood problem behaviors,…

Assessed differences in masculinity, femininity, and sex role attitudes in adolescent girls and boys, and the relation of pubertal timing to intensification of those attitudes. Found that sex differences in masculinity and sex role attitudes increased with age. Pubertal timing was unrelated to masculinity, femininity, and sex role attitudes. (BC)