This article hypothesizes that ritual ecstasy was selected for as a way for hunter-gatherers to cope with resource uncertainty by unifying separate groups. Results support this hypothesis and suggest a relationship between resource stress and deities as well as dependence on animals and presence of zoomorphic deities.

A materialist approach is used to study the status of women in hunter-gatherer groups. Techno-ecological factors are tested as predictors of women's status.

Researchers examine the ethnographic record, sampling 82 hunter gatherer societies from the HRAF World Cultures database, for cross-cultural patterns of archaeological evidence of knowledge of astronomy and constellations. Surveying the data, researchers identified many patterns in the upper paleolithic, noting the importance of further examination of this topic.

This study tests the weaning food availability hypothesis, that both the introduction of foods other than breastmilk and the cessation of breastfeeding will vary by society's subsistence type. This hypothesis has implications for demography, as accelerated weaning can lead to increases in both mothers' fertility (due to decreased birth intervals) and infant mortality (due to the presence of pathogens in new foods).

This study tests for a relationship between subsistence type and fertility using phylogenetic and statistical analyses. The authors find a clear relationship between dependence on agriculture and fertility among non-permanently settled groups.

This study focuses on the relationship between pathogen prevalence and mate selection. Results show that increased pathogen prevalence is significantly associated with an increased importance in the physical attractiveness of potential mates.

"An exchange theory of social behavior is advanced to explain intersocietal differences in sex codes…[Results indicate] modest support for the thesis that the location of power and resources as they influence social interaction and exchange are contributory forces in accounting for the level of sexual permissiveness found in society" (1).

This study presents a sociological theory of marriage type based on socioeconomic organization. Results suggest that intensive agriculture, more stratification, greater political integration, a fixed settlement pattern, a larger population, and greater labor specialization tended to be correlates of monogamy.

This study uses a multiple regression analysis to examine the relationship between society type and several variables of societal organization. Results suggest that limited family type is more likely to be found in complex societies.

This study looks at the relationship between the presence of love magic in a society and sexual anxiety. Results show support for the hypothesis that love magic is positively correlated with sexual anxiety.