Tested a developmental-ecological model of violence using longitudinal data from poor, urban African American and Latino adolescent boys and caregivers. Found that community structural characteristics significantly predicted neighborhood social processes. Parenting practices partially mediated relationship between neighborhood social processes and…

Assigned elementary schools to either immediate postbaseline intervention (PBI) with PeaceBuilders, a school-based violence prevention program, or to intervention 1 year later (PBD). Found significant gains in social competence for kindergarten through second-graders in Year 1, in peace-building behavior in Grades K to 5, and reduced aggression in…

Examined longitudinally the relationship between biological and social risk factors and aggressive behavior patterns among high-risk Australian adolescents in three groups: early-onset persistent aggression, adolescent-onset aggression, and nonaggressive behavior groups. Findings revealed that the interaction of biological and social risk factors…

Examined developmental trajectories toward violence over middle childhood and children's response to a universal school-based preventive intervention. Found that three growth patterns--positive linear, late acceleration, and gradual deceleration--characterized the children's trajectories, and these trajectories varied meaningfully by child…

A biopsychosocial model of the development of adolescent chronic conduct problems is presented and supported through a review of empirical findings. The model posits that biological dispositions and sociocultural contexts place certain children at risk in early life but that life experiences with parents, peers, and social institutions increment…

Raises conceptual and empirical questions regarding: whether physical aggression is the main individual risk factor for antisocial behavior; the prospect that language impairment is also a risk factor; the meaning of the male preponderance for antisocial behavior; findings on environmentally mediated risk; the role of biosocial interplay; the…

Examined the role of regulation in mediating the relations between maternal emotional expressivity and children's adjustment and social competence when children were 4.5 to just 8 years old, and again 2 years later. Found that at Times 1 and 2, regulation mediated the relation between positive maternal emotional expressivity and children's…

Examined the quality of parent-child relationships and the socioemotional and gender development of a community sample of 7-year-olds with lesbian parents, with two-parent heterosexual parents, or with single heterosexual mothers from the Avon Longitudinal Study of Parents and Children. Found no significant differences between lesbian mothers and…

Investigated the family as a context for gender typing of adolescent science achievement. Findings indicated no child gender or grade-level differences in science-related grades, self-efficacy, or interest. However, parents were more likely to believe that science was less interesting and more difficult for daughters than sons. Parents' beliefs…

Two studies examined in-group favoritism and out-group prejudice among two samples of white 4- to 7-year-olds. Findings indicated that the two attitudes were reciprocally correlated in the sample from a racially homogeneous school but not in the sample from a mixed-race school. In-group favoritism did not appear until 5 years of age and was…

This study examined preschoolers' performance on an observation task and a search task involving the invisible displacement of an object. Findings indicated that in the observation task, there was significantly longer looking to impossible than to possible outcomes among all children. Most 3-year-olds, but significantly fewer 2.5-year-olds,…

This study surveyed ninth- and eleventh-graders' evaluations of social exclusion based on social group membership. Responses indicated that participants found exclusion less wrong than denying resources, and used fewer moral and more conventional reasons to justify judgments. Participants relied on their group knowledge or stereotypes in…

In a sample of families with 6- to 18-year-olds, this study found that sons' and daughters' testosterone levels showed little direct connection to risk behavior or depressive symptoms. As parent-child relationship quality increased, testosterone-related adjustment problems were less evident. When relationship quality decreased, testosterone-linked…

This study examined role of shared family context in understanding differential parenting. Findings indicated that child age was the strongest child-specific predictor of positivity and differential positivity. Lower SES, marital dissatisfaction, and larger family size related to higher differential positivity. Children's temperament related to…

Three studies examined preschoolers' performance on free labeling of prototypical facial expressions of basic emotions. Findings indicated that children's errors remained even when method factors (poor stimuli, unavailability of an appropriate label, or production task difficulty) were controlled. Use of emotion labels increased with age…