This article examines the evolution of social inequality through tests of the influence of political, economic and social factors. “Analysis of comparative data shows that while some dimensions of the stratification system (such as measures of social complexity) exhibit a monotonic trend of increasing inequality with level of technology from the hunting-and-gathering to the agrarian type, others (such as measures of freedom and sexual inequality among males) exhibit a pattern of “agrarian reversal” in which inequality increases from the hunting-and-gathering to the advanced horticultural type but then declines with the agrarian type” (292).

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 paper examines relationships among mode of production, sedentarism, and population size. Generally, agricultural societies were found to be sedentary and have larger populations, while migratory societies (such as herders or hunters) had smaller population size.

This article examines variation in polygyny among foragers. Empirical analysis suggests that the level of male provisioning influences mating systems: higher male contribution to subsistence is associated with monogamy. The influences of pathogen stress, male-male competition, and male coercion are also considered.

This study uses "rules of combination" to describe internal order in social groups. The author examines kinship structure, and specifically the relationship of the mother's brother towards the son. Results support the hypothesis.

This study examines the relationship between personality traits and subsistence type in mixed farming and pastoralists societies. Findings suggest that differences in child socialization do not significantly predict personality differences in mixed farming and pastoralist societies as much as one would expect. Adult experiences should be considered as better predictors of personality traits.

Author proposes and presents evidence in support of the theory that most societies practice virilocal or patrilocal residence (this is the "normal" pattern" and that matrilocal residence is adopted when societies migrate to an already populated area.