Studied relationship between adolescents' sleep/wake habits and daytime functioning. Found that self-reported total sleep times decreased from age 13 to 19 years. Struggling or failing students obtained less sleep, went to bed later, and had greater weekend delays of sleep than those with better grades. Students with inadequate sleep reported…

Protective effects of ethnic identity on daily psychological well-being were examined in a sample of 415 ninth graders from Mexican and Chinese backgrounds. Utilizing daily diary assessments and multilevel modeling, adolescents with a greater regard for their ethnic group exhibited greater levels of daily happiness and less daily anxiety averaged…

Cognitive outcomes at age 11 of 131 Romanian adoptees from institutions were compared with 50 U.K. adopted children. Key findings were of both continuity and change: (1) marked adverse effects persisted at age 11 for many of the children who were over 6 months on arrival; (2) there was some catch-up between ages 6 and 11 for the bottom 15%; (3)…

Evidence indicates that peer victimization is predictive of later maladjustment, but the mechanisms by which harassment impairs development have yet to be identified. The objectives of this study were (a) to discern normative trends in peer victimization experiences and self- and peer perceptions during preadolescence and (b) to investigate…

This multi-method study sought to identify parameters of developmental change and stability of child reaction patterns to interparental conflict in the context of family relations in a sample of 223 6-year-old children and their parents followed over the course of one year. Consistent with the sensitization hypothesis, interparental withdrawal and…

This multimethod, prospective study examined the nature of pathways between interparental hostility and withdrawal, parental emotional unavailability, and subsequent changes in children's internalizing and externalizing behaviors, and school adjustment difficulties over a 3-year period in a sample of 210 mothers, fathers, and 6-year-old children.…