This study examined multiple risk behaviors (violence, delinquency, and substance use) among 240 African American and 262 Hispanic preadolescent boys from urban schools in the Midwest United States. Latent transition analysis allowed patterns of multivariate risk to emerge uniquely within and across these ethnic groups, highlighting patterns for…

The present study examined whether emotional abuse and neglect differentially predicted decreases in emotional clarity, and whether emotional clarity, in turn, predicted increases in depressive symptoms. Participants included 204 early adolescents (52% African American; 54% female; M age = 12.85 years) who completed four assessments with measures…

This study examines how high-quality professional development can promote the diffusion of effective teaching strategies among teachers through collaboration. Drawing on longitudinal and sociometric data from a study of writing professional development in 39 schools, this study shows that teachers' participation in professional development is…

Based on survey data and interview data collected over four academic years, this longitudinal study examined how a ubiquitous computing project evolved along with the changes in teachers, students, the human infrastructure, and technology infrastructure in the school. This study also investigated what conditions were necessary for successful…