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Bias-based aggression at school in the form of homophobic name-calling is quite prevalent among early adolescents. Homophobic name-calling is associated with low academic performance, higher risky sexual behaviors, and substance abuse, among other adverse outcomes. This longitudinal study examined risk and protective factors across multiple domains of the social ecology (individual, peer, family, school and community) and levels of analysis (within- and between-person) associated with homophobic name-calling perpetration and victimization. Students from four middle schools in the U.S. Midwest (N = 1,655; X ¯ age = 12.75; range = 10–16 years) were surveyed four times (Spring/Fall 2008, Spring/Fall 2009). For homophobic name-calling perpetration, significant risk factors included impulsivity, social dominance, traditional masculinity, family violence, and neighborhood violence; while empathy, peer support, school belonging, and adult support were significant protective factors. For homophobic name-calling victimization, significant risk factors included empathy (between-person), impulsivity, traditional masculinity, family violence, and neighborhood violence, while empathy (within-person), parental monitoring, peer support, school belonging, and adult support were significant protective factors. [ABSTRACT FROM AUTHOR]

Aggression among peers during adolescence is associated with deleterious developmental outcomes. Family violence has been strongly associated with many forms of aggression - such as verbal and physical aggression. Yet, associations between sibling and peer aggression at school and the protective role of school belonging remain understudied. Thus, the present study addresses this gap. Middle school students (N = 1611) completed self-report surveys four times across 2 years in a U.S. Midwest state. A multi-level within- and between-person longitudinal design was employed to examine associations among sibling aggression perpetration, witnessing intrafamilial violence, and verbal and physical peer aggression at school. Also, the moderating effect of school belonging between family violence and peer aggression was also investigated. Higher levels of sibling aggression were associated with higher verbal peer aggression at both within- and between-person levels. Family violence was associated with higher verbal and physical peer aggression, but only at the between-person level and not within-individuals. Higher school belonging was associated with less verbal and physical peer aggression overtime. School belonging moderated the relation between sibling aggression and verbal as well as physical aggression; higher within-person level sibling aggression was associated with lower verbal and physical aggression when students reported a strong sense of school belonging. Aggression prevention programs that focus on fostering school connectedness may mitigate the transmission of violence from home to school. [ABSTRACT FROM AUTHOR]