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 article presents two evolutionary models that may explain relationships between war and socialization of children: the "environmentally contingent reproductive strategy" (ECRS) model put forward by Draper and Harpending (1982), and a model put forward by Carol and Melvin Ember. Results do not provide support for the hypotheses involving father-infant sleeping proximity derived from the ECRS model. The authors also find some inconsistencies with their own model.

This study examines the relationship between political participation and warfare, suggesting that checks on power, removal of leaders, extent of political participation, and absence of fission will be negatively associated with the frequency of warfare. This hypothesis was supported with empirical analysis.

The author attempts to test the "Oedipus-complex" hypothesis--the psychoanalytic idea that under certain conditions (such as the long-post partum sex taboo) males are sexually attracted to their mothers and as a consequence certain fears and anxiety are generaated. The hypothesis is tested at the societal-level using ethnographic data.

This article expands on Buss's (1989) study of the differences in male and female mate preferences in Western folktale characters by adding non-Western data. The new results show support for Buss's original findings.

The author tests various hypotheses regarding cross-cultural occurrence of geophagy, the eating of earth. Nearly 500 years of references to geophagy were compiled into the Database on Human Geophagy, which was then used to examine biological justifications for this little-understood behavior.

This book investigates sanctions for nonmarital conceptions or birth. The author conducts cross-cultural tests for hypotheses derived from a variety of theories. Results do not support one theory over another, but suggest that variables such as sociocultural complexity, family structure, descent, fraternal interest groups, sexual inequality, and child-parent relationships all affect the consequences of illegitimacy.

This book investigates the origins of supernatural and religious beliefs. The author tests associations between various types of beliefs (e.g. witchcraft, monotheism) and various societal characteristics (e.g. mobility, class stratification). Many hypotheses are supported. Theoretical discussion is included, and the author posits that “the belief in a particular kind of spirit springs from experiences with a type of persisting sovereign group whose area of jurisdiction corresponds to that attributed to the spirit” (175).