Social centrality and aggressive behavior in the elementary school: Gender segregation, social structure, and psychological factors.

In this paper, we build on key findings in the sociological literature regarding different patterns of association between social centrality and overt aggressive behavior in the context of same-and-cross gender social interactions. We explore these associations in a population of urban elementary school students ( $\widehat{\mathrm{Age}} =8.62$ , SD = 0.69, N = 848), while addressing claims that the role of psychological factors is overstated in this literature. Our results indicate that, on average, social centrality is positively associated with aggressive behavior for boys, but negatively for girls. We also find a moderating effect indicating that the proportion of male peers with whom participants are reported to hang around, as well as their own gender play a role in the association between social centrality and aggression. These findings are discussed in the context of an ecological perspective on human development in which interactions among individuals, their social groups, and key environments are viewed as central to shaping developmental pathways.