This study extends previous research on the long-term connections between motivation constructs in expectancy-value theory and achievement outcomes. Using growth mixture modelling, we examined trajectories of change for 421 students from 4th grade through college in their self-concept of ability (SCA) in math, interest in math, and perceived…

We examined the linear and nonlinear relations between breadth of extracurricular participation in 11th grade and developmental outcomes at 11th grade and 1 year after high school in an economically diverse sample of African-American and European-American youth. In general, controlling for demographic factors, children's motivation, and the…

In this study, we examined the associations between organized activity participation during early adolescence and adjustment in a large and economically diverse sample of African American and European American youth. The sample included 1,047 youth (51% female and 49% male and 67% African American and 33% European American). We used analysis of…

The authors examined the relations between participation in a range of high school extracurricular contexts and developmental outcomes in adolescence and young adulthood among an economically diverse sample of African American and European American youths. In general, when some prior self-selection factors were controlled, 11th graders'…

This research examined patterns of substance use and academic factors among a sample of 733 African-American and European-American adolescents from a metropolitan area. First, youth were classified into 11th grade high, moderate, or no substance use groups and classified as users, initiators, desistors, and nonusers based on eighth and 11th grade…