The Role of Emotion Dysregulation in the Links Between Sibling Victimization and Internalizing Symptoms in Middle Childhood

Despite sibling victimization being a relatively common occurrence, there is a dearth of research examining the outcomes associated with this interpersonal stressor, including internalizing symptoms. The current study sought to advance the literature by longitudinally examining the links from sibling victimization to depression and anxiety symptoms while also considering peer victimization in a sample of elementary school-age youth (51.8% boys, M age?=?8.72) who were initially in 3rd and 4th grade. Further, emotion dysregulation was examined as a mediator of these associations. Youth provided self-reports at three separate time points approximately 6 months apart. Path analysis models indicated that emotion dysregulation mediated the association between sibling, but not peer, victimization and increased depression symptoms. However, neither sibling nor peer victimization were associated with anxiety symptoms over time. Results suggest the importance of attending to sibling victimization for the prevention of emotion dysregulation difficulties and ultimately early symptoms of depression. Youth assessments need to include questions about both sibling and peer victimization, and sibling victimization needs to be included as a target of prevention and intervention for subsequent internalizing difficulties.