The heterogeneity in the developmental trajectories of math motivational beliefs (i.e., expectancies for success and subjective task value beliefs) was examined among Asian and Latinx male and female students from Southern California across Grades 8 through 10 (n = 2,710; 50% female; 85% Latinx; 15% Asian; M[subscript age] = 13.77). By conducting…

Utilizing a person-centered approach, the present study explored two-hundred and sixty-five adolescents' reports of self-disclosure, help, conflict, and conflict resolution with a close friend to investigate variability in profiles of friendship quality, whether gender and gender homophily and ethnicity homophily of friends are associated with…

African American male students face a multitude of challenges that may lead to poor academic and social outcomes at school. There is extensive research on the predictors of their problems, but far less on the factors that can lead to positive outcomes. To address this gap, this exploratory study asked two main questions. Does racial-ethnic…

For schools and teachers to help students develop knowledge and skills, students need to show up to class. Yet absenteeism is prevalent, especially in secondary schools. This study uses a rich data set tracking class attendance by day for over 50,000 middle and high school students from an urban district in academic years 2007-2008 through…

The aim of this paper is to describe a school-based universal intervention (the Tilly's Life Center "I Am Me" program) to promote emotional competence and social-emotional skills in adolescents. We present results of a mixed-methods program evaluation conducted in public schools in Southern California. In Study 1, sixteen students…

We evaluated maternal gatekeeping attitudes as a mediator of the relation between marital problems and father-child relationships in 3 waves when children were in Grades 7-10. We assessed each parent's contribution to the marital problems experienced by the couple. Findings from mediational and cross-lagged structural equation models revealed that…

Adolescents are often resistant to interventions that reduce aggression in children. At the same time, they are developing stronger beliefs in the fixed nature of personal characteristics, particularly aggression. The present intervention addressed these beliefs. A randomized field experiment with a diverse sample of Grades 9 and 10 students (ages…

The aim of this thesis is to investigate and present the status of student synthesis with color coded formula writing for grade level six through twelve, and to make recommendations for educators to teach writing structure through a color coded formula system in order to increase classroom engagement and lower students' affect. The thesis first…

A great deal of developmental research has relied on self-reports solicited using the "some/other" question format (""Some students" think that...but "other students" think that..."). This article reports tests of the assumptions underlying its use: that it conveys to adolescents that socially undesirable…

Acculturation discrepancy theory predicts that conflicting cultural preferences between adolescents and their parents will increase the adolescents' risk for behavior problems such as substance use. This study evaluated this hypothesis in a sample of 1683 Hispanic students in Southern California who completed surveys in 9th and 10th grade.…

Adolescent girls reported on their experiences both as perpetrators and as victims of several distinct forms of relational aggression. Details of these incidents were gathered from 114 ethnically diverse ninth and tenth graders via a secure online survey. The frequency with which girls perpetrated or were targeted for particular acts of relational…

Investigates 81 first, second, and third-generation Mexican American male adolescents to test whether integration with traditional Mexican American culture promotes healthy psychological adjustment and less juvenile delinquency. Finds no differences in educational aspiration, but that third-generation subjects had lower expectations, higher…