Defense Date


Document Type


Degree Name

Master of Science



First Advisor

Terri N. Sullivan, Ph.D.

Second Advisor

Joshua Langberg, Ph.D.


High prevalence rates and negative outcomes of peer-based aggression and victimization during early adolescence underscore the need to identify causes and consequences of these outcomes. Limited research has examined the impact of environmental and contextual factors, such as school climate, on peer aggression and victimization. Few studies have addressed relations between school climate and specific subtypes of physical and relational aggression and victimization. Although school climate has been assessed via interpersonal subsystems (i.e., student-student and student-teacher relationships), little research has incorporated the role of student awareness and reporting of violence and safety concerns. Further, studies are needed that consider the bi-directional relations between school climate and peer aggression and victimization over time. To address these limitations, the current longitudinal study examined associations between school climate (i.e., student-student and student-teacher relationships and awareness/reporting) and peer aggression and victimization over six months among a sample of 265 middle school students.


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