This study examined how "homophily" (similarity) and "propinquity" (availability) simultaneously predict both unidirectional and reciprocal cross-ethnic friendships among early adolescents in ethnically diverse classrooms. In a sample of sixth-grade students, liking nominations were used as the indicator of friendship, and both…

The authors test biosocial models that posit interactions between biological variables (testosterone, estradiol, pubertal status, and pubertal timing) and social context variables (family, peer, school, and neighborhood) in predicting adolescent involvement with cigarettes and alcohol in a sample of 409 adolescents in Grades 6 and 8. Models…

The present investigation examines mediated pathways from pubertal development to changes in depressive affect and aggression. Participants were 100 white girls who were between the ages of 10 and 14 (M=12.13, SD=0.80); girls were from well-educated, middle-to upper-middle class families, and attended private schools in a major northeastern urban…

Tested model relating girls' pubertal timing to mothers' history of psychopathology, mediated by family discord and father absence/stepfather presence. Found that mothers' history of mood disorders predicted earlier daughters' puberty, with the relation fully mediated by dyadic stress and biological father absence. Stepfather presence best…