This article used sub-national, historical and cross-country data to examine if exposure to ultraviolet radiation (UV-R) could be a factor in the formation of individualism and collectivism. The study found support, across all data sets, that increased exposure to UV-R is associated to more collectivism within a culture. The authors theorized that UV-R exposure increases the likelihood of eye disease causing higher rates of blindness. With increased levels of blindness, the more emphasis there will be on close family relations and/or increased uncertainty avoidance from out-groups leading to more collectivism in a culture.

This article discusses constraints on role behavior that affect the division of labor, focusing on women’s childcare responsibilities, the nature of production sequences, and occupational specialization. The authors employ entailment analysis to examine 50 activities; results suggest three findings: 1) men are more likely to be assigned tasks that require travel and exposure to danger, 2) men are more likely to perform tasks that are early in the production sequence, and 3) if women perform a task at an early stage of production, they are more likely to perform subsequent tasks.

While a growing body of research being conducted in Western societies suggests that both religious/spiritual (R/S) and so-called “pro-science” belief systems are correlated with better health and well-being, a widespread perception also exists that these two categories of belief systems are fundamentally incompatible. This article tests that perception. The authors finds that cross-culturally – and particularly outside of modern Western societies – it is largely incorrect. Rather, around the world individuals adhere to both R/S and pro-science belief systems at the same time, and often benefit from both of them.

In this chapter of 'Beyond War,' Douglas critiques previous codes of warfare to make a distinction between feuding and warring. A test of warfare and level of social complexity among hunter-gatherers is conducted. Results indicate that complex hunter-gatherers make war while a majority of simple hunter-gatherers do not.

This article "focuses on internal relationships in the organization of polygynous systems." The author presents new codes for polygyny and tests hypotheses regarding "complexes" of polygynous variables: wealth-increasing polygyny and sororal polygyny. It is asserted that polygyny is produced by a variety of factors and circumstances, and that regional historical, demographic, and ecological forces require attention in order to understand its acceptance and practice.

This article uses two dependent variables: acceptance of polygyny (the rules) and and the percentage of women in polygynous marriages (the behavior). The rules of marriage are best predicted by social structural variables (e.g. warfare, fraternal interest groups) whereas actual marriage behaviors are best predicted by economic and ecological variables (e.g. climate zone). Deemphasizing exclusively reproductive or economic explanations for polygyny, the authors find polygyny is related to male-oriented kin groups, territorial expansion and migration, and marrying war captives. Polygyny is thus thought to have a stratifying effect on women and is ultimately a detriment to female status.

In this article, the researcher aims to test the usefulness of grid/group theory, developed by anthropologist Mary Douglas, for cross-cultural research. The article utilizes principal component factor analysis on grid/group indicators to test if "grid" and "group" can be considered as sufficiently independent factors, and thus useful for quantitative cross-cultural research.

Authors Michael Burton and Douglas White present and test an ecological model for the process of agricultural intensification that aims to explain variance in (and the reduction in) female contribution to agriculture. The model synthesizes and expands upon findings put forth by previous studies in order to create a more comprehensive design. Results suggest that the strongest predictors of female contribution to agriculture are the number of dry months, the importance of domesticated animals to subsistence, and the use of the plow in farming. Crop type, although a weaker predictor, is also supported.

In this study, the authors examine pathways to social inequality, specifically social class hierarchy, in 408 non-industrial societies. In a path model, they find social class hierarchy to be directly associated with increased population size, intensive agriculture and large animal husbandry, real property inheritance (unigeniture) and hereditary political succession, with an overall R-squared of 0.45. They conclude that a complex web of effects consisting of environmental variables, mediated by resource intensification, wealth transmission variables, and population size all shape social inequality.

This study explores predictors of variation in two dimensions of marital residence patterns among hunter-gatherers: 1) the tendency toward patrilocality versus matrilocality and 2) the tendency toward unilocality versus bilocality.