Research has shown that racial/ethnic diversity in elementary schools and classrooms benefits children's academic achievement and feelings of safety and belonging. The current study aimed to expand on existing research by examining associations between classroom racial/ethnic composition and upper elementary children's social-emotional development…

Guided by the ecological model of civic development, this study examined the extent to which the growth in children's self-control during middle childhood predicted their civic engagement at age 26 directly and indirectly via their prosociality at age 15. We used data from 1,042 children (50% female, 77% White) in the NICHD Study of Early Child…

At school entry, girls are rated by teachers as more competent on measures of social skills than boys. It is less clear if this higher rating is stable or grows over time. To address this question, multiple group curve of factors models investigated gender-specific growth trajectories across seven waves of measurement in a large, longitudinal…

The current study examines the social and behavioral development of school-age children with different histories of overweight onset. Eight thousand children from the Early Childhood Longitudinal Study-Kindergarten Cohort (ECLS-K) participated. Three groups of children were identified for analysis: (1) those who were persistently overweight from…

Social and behavioral problems can interfere with a child's acquisition of age-appropriate skills, which may lead to antisocial behavior in adolescence and adulthood. Thus, determining how best to support positive skills during early childhood is critical. Using data from the first three phases of the NICHD Study of Early Child Care and Youth…

In an attempt to devise a methodology for characterizing children's intuitive theories of drug action, 217 children in Grades 1 to 6 were interviewed about how two substances, alcohol and cocaine, cause behavioral changes in their users. Measures tapped both structure (Piagetian complexity of causal reasoning, coherence, and construction of a…

This longitudinal study assessed the role of afterschool program (ASP) participation in the development of child obesity and peer acceptance in a sample of 439 children. Most participants lived in poverty and were Hispanic or African American. Measurements of height and weight determined obesity status and peer acceptance was assessed through…