Impact of Sibling Victimization on Child Internalizing Symptoms.

The current study examined associations between sibling victimization and anxiety and depression symptoms while also considering peer victimization within time and six months later among elementary school-age youth. Both sibling and peer victimization were associated with depression symptoms within as well as across time when considered independently. However, when examined together, peer victimization was only uniquely associated with depression symptoms within time and sibling victimization was only uniquely associated with depression symptoms across time. Sibling and peer victimization were associated with anxiety symptoms within, but not across, time when examined independently, and no associations were evident when sibling and peer victimization were examined simultaneously. No interactive effects of sibling and peer victimization were evident for depression or anxiety symptoms, indicating unique rather than cumulative contributions. Findings suggest that the impact of sibling victimization on depression symptoms is more robust than effects of peer victimization over time.