The article examines whether cultural groups tend to use supernatural beliefs more to explain natural phenomena or social phenomena. Analysis of ethnographic text from 114 diverse societies reveals that supernatural explanations are more common for natural phenomena, consistent with the theory that humans tend to perceive intent and agency in the natural world. However, supernatural explanations of social phenomena were more prevalent in urbanized societies with greater social complexity and anonymity. The study highlights how people use supernatural beliefs to explain their world and how this varies across small-scale and urbanized communities.

This chapter examines correlates of gerontrocide. Previously suggested predictors, such as nomadism and harsh climate, were not found to be associated with gerontrocide, but data suggested that several other variables such as social stratification, subsistence type, and rule of descent, are significant predictors.