Homophily (Cairns & Cairns, 1994; Espelage, Holt, & Henkel, 2003) is one of the theories that lead to peer bullying. It can be defined as the tendency to be attracted to one another due to similar demographic factors (e.g. grade, sex, and race). A research had been carried out in order to examine peer influences on bullying. 422 middle school students participate in this survey and were asked questions about their feelings, friends and aggression. Students were required to complete a peer-nomination task, demographic questions, and a self report on bullying and fighting. Researchers found that demographic variables of peer group did not influence the peer-level bullying. Moreover, they found that peer influence differs across different types of aggression (fighting & bullying). It was said that bullying is a predecessor of a serious forms of aggression. Lastly, researchers also discovered that students tend to hang out with peers who have similar behavior attributes. This is supported by the
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