A sociocultural approach to understanding collective trauma in Indigenous communities.

Research on the effects of collective trauma tends to take a psychocentric approach, focusing on the impact of being geographically near the traumatic event (physical proximity) or personally knowing a victim (social proximity). We theorize that this approach falls short in describing the effect of collective trauma among interdependent cultural groups, such as Indigenous Peoples, for whom the self and one's group are inextricably tied. Using a concurrent embedded mixed-methods design (N = 545), the current study explores the influence of cultural proximity (having a shared cultural connection to victims) in the wake of a fatal school shooting involving students from both a Native American tribe and a predominantly White city. After controlling for physical and social proximity, student distress behaviors and staff support behaviors, but not staff members' own psychological distress, were significantly higher in schools with higher Native student populations, where a larger proportion of students shared cultural connections with the victims. We discuss implications regarding the importance of providing adequate support for Indigenous Peoples, and interdependent cultural groups in general, following collective trauma.