The present study investigated the effect of descriptive and injunctive norms of peers, parents, and favorite celebrities on adolescents' negative online behavior toward celebrities. The sample consisted of 1,255 adolescents ([X-bar][subscript age] = 14.17, SD = 0.47). Adolescents indicated what their peers, parents, and favorite celebrities think…

Using primary socialization theory and theory of planned behavior, this study examined how targeted parent-child communication against substance use and parents' references to the negative consequences of their own past substance use (from the youth's perspective) directly and indirectly relate to Latino and European American youth's external…

The current study tested sex-specific pathways to early puberty, sexual debut, and sexual risk taking, as specified by an integrated evolutionary-developmental model of adolescent sexual development and behavior. In a prospective study of 238 adolescents (n = 129 girls and n = 109 boys) followed from approximately 12-18 years of age, we tested for…

Many adolescents experience peer victimization, which often can be homophobic. Applying the minority stress model with attention to intersecting social identities, this study tested the effects of general and homophobic victimization on several educational outcomes through suicidality and school belonging among 15,923 adolescents in Grades 7…

The objectives of this study were to examine outcomes of the Minnesota D.A.R.E. Plus Project on violence-related behaviors among middle school students and mediation analyses that test how the intervention was effective in reducing physical and verbal violence. Twenty-four schools were randomly assigned to the D.A.R.E. middle school curriculum,…