This article discusses the ability of evolutionary theory to generate new hypotheses about human social behavior. Four hyotheses from a previous study are used to support these ideas.

This article investigates relationships among society size, war and conflict, preferred habitats, and belief in moralizing gods. The authors discuss morality and collective action in the face of natural disasters and competition for resources, theorizing that beliefs in moralizing gods could facilitate such cooperation.

This article examines the belief in high gods supportive of human morality. Empirical analyses suggest that this belief is associated with larger society size independent of region and social stratification. While stratification is also associated with a belief in high gods supportive of human morality, this relationship was not independent of regional differences or society size.

This article reviews the theory that permanent animal groups have only one sex breed outside the group in order to balance genetic diversity and group relatedness. The author theorises that since males inherit valuable membership in patrilocal/lineal societies, they are expected to be more concerned about the probability of paternity than males in matrilocal/lineal societies. Moral rules, and specifically belief in moralizing gods, are expected to reflect this difference. In other words, moralizing gods are used to restrict the sexual activity of women.