Estimating Student Attrition in School-Based Prevention Studies: Guidance from State Longitudinal Data in Maryland.

Attrition is a critical concern for evaluating the rigor of prevention studies, and the current study provides rates of attrition for subgroups of students and schools who are often sampled for prevention science. This is the first study to provide practical guidance for expected rates of attrition using population-level statewide data; findings indicated that researchers using K-12 school-based samples should plan for attrition rates as high as 27% during middle school and 54% during elementary school. However, researchers should consider the grade levels initially sampled, the length of follow-up, and the specific student characteristics and schools available for sampling.

Protective factors associated with positive mental health in traditional and nontraditional Black students.

Black students have higher levels of psychological distress compared with other students, in part to racism and discrimination; however, help-seeking remains low. As a result, most research has been deficit-based focusing on mental illness, which provides an incomplete state of their mental health. Therefore, very little is known about positive mental health (PMH), which is composed of social, emotional, and psychological well-being.

Preventing Adolescent Substance Use: A Content Analysis of Peer Processes Targeted Within Universal School-Based Programs.

Universal school-based substance use prevention programs are widely disseminated and often include a focus on peer relationships. Network theory and social network analysis (SNA) have emerged as useful theoretical and methodological frameworks for examining the role of peer relationships in prevention and intervention research. We used content analysis to systematically code the peer processes targeted by three universal school based prevention programs.

The Effect of Having Aggressive Friends on Aggressive Behavior in Childhood: Using Propensity Scores to Strengthen Causal Inference.

This study uses propensity scores to statistically approximate the causal effect of having aggressive friends on aggressive behavior in childhood. Participants were 1,355 children (53% girls; 31% minority) in 97 third and fifth grade classrooms enrolled in the Classroom Peer Ecologies Project. Propensity scores were calculated to control for the impact of 21 relevant confounder variables related to having aggressive friendships and aggressive behavior.

Delinquency in Adolescent Girls: Using a Confluence Approach to Understand the Influences of Parents and Peers.

Determining the interdependence of family and peer influences on the development of delinquency is critical to defining and implementing effective interventions. This study explored the longitudinal relationship among harsh punishment, positive parenting, peer delinquency, and adolescent delinquency using data from a sub-sample of the Pittsburgh Girls Study. Participants were 622 adolescent girls (42% European American, 53% African American); families living in low-income neighborhoods were oversampled.

Family Functioning and High Risk Adolescents' Aggressive Behavior: Examining Effects by Ethnicity.

The relationship between family functioning and adolescents' physical aggression has been well established, but whether these relationships might differ by ethnicity has received less attention. Ethnic variations may be important for targeting prevention programs to specific youth and families. This study examined the longitudinal relationship between family cohesion, parental monitoring, and physical aggression using data from the Multisite Violence Prevention Project sample of high-risk youth (elevated aggression).

Examining the developmental interface of cortisol and depression symptoms in young adolescent girls.

Despite the substantial amount of data supporting a link between HPA-axis functioning and depression, the ontogeny of this association is not known. The aim of the present study was to contribute data on the developmental interface of HPA-axis functioning and depression in girls by testing associations between repeated measures of depression symptoms and cortisol levels in childhood and early adolescence. Girls (N=232) and their mothers, who were participating in a longitudinal study, were interviewed about depression symptoms annually from ages 9 to 12 years.

The longitudinal relationship between peer violence and popularity and delinquency in adolescent boys: examining effects by family functioning.

Mapping the relationship of peer influences and parental/family characteristics on delinquency can help expand the understanding of findings that show an interdependence between peer and family predictors. This study explored the longitudinal relationship between two characteristics of peer relationships (violence and perceived popularity) with subsequent individual delinquency and the moderating role of family characteristics (cohesion and parental monitoring) using data from the Chicago Youth Development Study. Participants were 364 inner-city residing adolescent boys (54% African American; 40% Hispanic).

Lack of assertion, peer victimization, and risk for depression in girls: testing a diathesis-stress model.

Purpose: To apply a diathesis × stress model to testing the association between peer victimization and depression in a sample of preadolescent girls.

Methods: DSM-IV symptoms of depression symptoms were measured at ages 9 and 11, assertiveness and peer victimization were assessed by youth report at age 9.

Results: The interaction of low levels of assertiveness and high peer victimization at age 9 was predictive of depression symptoms at age 11, controlling for earlier depression symptoms.

Longitudinal associations between emotion regulation and depression in preadolescent girls: moderation by the caregiving environment.

Identifying childhood precursors for depression has been challenging and yet important for understanding the rapid increase in the rate of depression among adolescent girls. This study examined the prospective relations of preadolescent girls' emotion regulation and parenting style with depressive symptoms. Participants were 225 children and their biological mothers recruited from a larger longitudinal community study.

Subthreshold symptoms of depression in preadolescent girls are stable and predictive of depressive disorders.

Objective: Given the risk for adolescent depression in girls to lead to a chronic course of mental illness, prevention of initial onset could have a large impact on reducing chronicity. If symptoms of depression that emerge during childhood were stable and predictive of later depressive disorders and impairment, then secondary prevention of initial onset of depressive disorders would be possible.

Method: Drawing from the Pittsburgh Girls Study, an existing longitudinal study, 232 nine-year-old girls were recruited for the present study, half of whom screened high on a measure of depression at age 8 years.