This paper builds off previous research into the effect of population size and resource risk on complexity of subsistence technology by investigating the relationship between these independent variables and total number of material items and techniques used by various western North American hunter-gatherer groups. This tally of total technological complexity is found to be insignificantly related to population size or residential mobility; however, there is a significant correlation in the expected direction between technological complexity and one measure of resource risk (mean annual temperature during driest month). Tying this finding to previous analyses of subsistence technologies, the authors theorize that environmental risk is a pervasive driver of technological ingenuity and cultural evolution.

How have ethnopolitical landscapes transformed across Africa? The authors of this article analyze how ethnic identities have been influenced by two major socioeconomic revolutions of 19th and 20th century sub-Saharan Africa: cash crops and print technologies. They found that ethnic identities, through the means of politicization and boundary-making, had become more salient and politically relevant in communities where cash crops and print technologies were present. Furthermore, areas with cash crops and subsequent agricultural zones were found to have stricter ethnic boundaries and less interethnic marriage than areas with more print publications.

The authors assemble an inventory of burning practices based on cross-cultural ethnographic data in order to elucidate or provide interpretive range for burning patterns seen in the archaeological record. Although no explicit hypotheses are tested, descriptive generalizations are proposed.

This paper seeks to identify how different practices of food sharing are related to one another, and the degree to which societies in North and South America may share practices with one another. The authors attempt this by using ethnographic literature to break sharing activities down into their constituent, multi-stage parts, and then comparing the prevalence of these parts and their relationships to one another. The study finds that the presence or absence of a distributor in a sharing activity, and who that distributor is, has a significant effect on how sharing is carried out. On the other hand, linguistic relationships between groups seem to have little impact on their sharing practices, and geographic proximity between groups only seems to have a significant effect on sharing practices in North America.

This paper seeks to understand why hunter-gatherer settlements become less dense as their populations increase, as opposed to the tendency of sedentary settlements to become denser with increasing population. They propose that settlement density is dependent on mitigating proximity costs at low settlement sizes, and movement costs at larger settlement sizes, and that these proximity costs act strongly upon hunter-gatherer groups, as they do not have the social structures or material technologies to alleviate them, thereby creating less dense settlements. The authors construct a model based upon this theory, and then test it using a cross-cultural database of 1,760 hunter-gatherer camps from 112 different cultural groups. They find that hunter-gatherer groups become less dense as settlement size increases, but as movement costs become more important than proximity costs, the rate at which they become less dense diminishes. They also find that settlements begin to become denser when there is food security and proximity costs are mitigated, indicating that domestic food production is not necessarily requisite for settlement densification and that densification may have emerged in tandem with the advent of agriculture, as opposed to as a result of it.

By analyzing patterns of between- and within-population musical variability among 16 Austronesian-speaking aboriginal groups, the researchers hope to evaluate degree of similarity to structures of human genetic diversity. As in the genetic domain, within-population variance is found to be much higher than between-population variance, leading the researchers to suggest that patterns of musical distance and divergence may serve as an indicator of cultural evolution.

Jorgensen revisits Driver’s 1974 study of the various explanations for kin avoidances which mainly focused on North America, and broadens the scope to include a world-wide sample. In his work he brings up what he believes to be flaws in the comparative method, arguing that Driver’s work did not properly test for the independence of the correlations. Jorgensen revisits over 50 different variables in order to test for ‘all relationships among all categories.’ Overall, the results that he found agreed with Driver’s work, but presented a more transparent overview. See the article for the individual clusterings of Phi Coefficients for the set of 21 variables set as well as the set of 50 variables.

This chapter examines the differences in Rorschach percepts among people of different cultures and different geographic areas. Several patterns are observed.

This paper investigates the presence of gambling in preindustrial societies. Analysis shows that the presence of gambling can be predicted by region, the presence of domestic commercial money, socioeconomic inequality, and mobility combined with food supply from animal husbandry. The author suggests that the ideas underlying the Friedman-Savage utility function (1984) can be helpful in making predictions about which precapitalist societies do and which do not engage in gambling.

Researchers investigated further into why and how humans speak so many languages across the globe, and why they are spread out unevenly. Using two different path analyses, a Stationary Path analysis and a GWPath, researchers tested the effect of eight different factors on language diversity. Out of the eight variables (river density, topographic complexity, ecoregion richness, temperature and precipitation constancy, climate change velocity, population density, and carrying capacity with group size limits), population density, carrying capacity with group size limit, and ecoregion richness had the strongest direct effects. Overall, the study revealed the role of multiple different mechanisms in shaping language richness patterns. The GWPath showed that not only does the most important predictor of language diversity vary over space, but predictors can also vary in the direction of their effects in different regions. They conclude that there is no universal predictor of language richness.