This research examined parents' restriction of children's peer relationships in the United States and China. American and Chinese children (N = 934; M[subscript age] = 12.67 years) reported on their parents' peer restriction (e.g., limiting children's time with peers) and their behavioral and psychological adjustment 3 times over a year.…

This investigation examines the spread of problem behaviors (substance use and delinquency) between twin siblings. A sample of 628 twins (151 male twin pairs and 163 female twin pairs) drawn from the Quebec Newborn Twin Study completed inventories describing delinquency and substance use at ages 13, 14, and 15. A 3-wave longitudinal actor-partner…

The authors' purpose was to examine the degree to which low achievement is related to ontogenetic factors (i.e., personal psychological traits expressed as attention and depression) or microsystemic factors (i.e., socioeconomic status, parenting, relationship with peers and teachers), using a total of 721 middle school students in South Korea.…

We examined behavior problems in 80 adolescents (39 male; mean age = 15.74 years) adopted in early childhood by Canadians from globally depriving Romanian institutions. Overall, rates of clinically significant behavior problems were comparable to rates found in younger postinstitutionalized adopted children. The association between duration of…

Researchers administered the Perceived Family Environment Questionnaire to college students to assess family traits and child rearing practices as predictors of drug and alcohol usage. Results indicated significant differences in perceived family environment between low, heavy, and addicted drug users. Family atmosphere and parenting style…