This article examines marital residence and sibling coresidence among horticulturalists in the South American lowlands. The authors reject a hypothesis that patrilocality is the defining trait of Amazonian tropical forest culture. Results on horticulturalists are compared with findings on hunter-gatherers: horticulturalists tend to be more uxorilocal. Empirical analysis also suggests that women tend to live with more kin later in life, and in large villages headmen live with more kin than nonheadmen.

The authors examine degree of intensiveness (kin-relatedness) among foraging and agropastoralist societies, predicting that hunter-gatherers will pursue more extensive kinship networks in order to maximize residential options in the case of unpredictability or uneven geographic distribution of food resources. Support is found for the hypothesis, and it is suggested that while extensive fission-fusion dynamics are beneficial in foraging systems, the increase in cooperation in large-scale agricultural settlements is aided by norms which encourage kin marriage and relatedness.

This article examines the quality of forager habitats to determine whether agriculturalists occupy the most productive areas while modern forager groups are relegated to poor habitats. Findings indicate that there are slight but insignificant differences in the net primary productivity of foragers’ land and agriculturalists’ land. Further analysis of types of agriculturalists suggest that horticulturalists live in the most productive habitats, followed by intensive agriculturalists and finally pastoralists.

This study attempts to reconstruct ancestral marriage practices using hunter-gathers' phylogenies based on mitochondrial DNA sequences. Data suggest that arranged marriages and brideprice/bridewealth likely go back at least to the first modern human migrations out of Africa and that early ancestral human societies probably had low levels of polygyny.

The idea that archaic humans used wooden clubs as weapons is popular but not based on much archaeological evidence, due to the poor preservation of organic materials in the archaeological record. A new study analyzed 57 recent hunting-gathering societies and found that the majority used clubs for violence and/or hunting. The use of throwing sticks was less frequent. The study suggests that the use of clubs by early humans was highly probable, but that prehistoric weapons may have been quite sophisticated and carried strong symbolic meaning. The great variation in the forms and use of clubs and throwing sticks among recent hunter-gatherers suggests that similar variation may have existed in the past.

High infant and child mortality rates are suggested to be one of the most enduring and important features of ancestral human environments, referred to as the Environment of Evolutionary Adaptedness (EEA). These rates contrast with the very low rates of infant and child mortality among many industrialized nations since the 19th and 20th centuries. The authors compare data from recent hunter-gatherer and agricultural societies, historical records, and non-human primates in attempt to quantitatively describe infant and child mortality rates during the EEA.

This study explores the ways in which human deception has evolved using a sample of 145 societies from eHRAF. After noticing that most research has focused just on tactical deception on humans, this study delved into the categorization and prevalence of human aggressive mimicry. The authors suggest that deception evolved from the context of directing it toward prey. The presence of human aggressive mimicry supports that this is a near-universal cross-cultural practice among hunter-gatherers and the authors highlight the importance of further research on human-nonhuman interactions. The authors posit that this hypothesis could serve as a link between the Social Brain Hypothesis and the Foraging Brain Hypothesis.

This paper proposes that marriage transactions are mechanisms by which households meet labor needs, distribute property, and maintain or enhance status. The authors find that type of marriage transaction is related to subsistence type and social stratification. In particular, bridewealth is more common where property is limited while dowry is more common among property-owning classes.

This study follows the theoretical construct of general cultural tightness and looseness (TL). Tightness is thought to be adaptive when facing socioecological threat, such as resource stress, since it involves a greater amount of cooperation. The study asks: "Why do some societies have relatively standardized or uniform clothing and adornment, whereas others have considerable variability across individuals?", which is connected to the broader question of why some societies show more within-group variation. The authors use a sample of 80 non-industrial societies from SCSS, to explore the relationship between general cultural tightness and standardization or synchrony in dress. The results support that tighter societies have more uniformity in dress and that resource stress is a predictor of synchrony. However, it is not supported that egalitarian societies have more synchrony, and that tightness is positively predicted by resource stress.

In this article Hames addresses the long-standing disagreements between evolutionary theories regarding human warfare (more specifically between Rousseauian and Hobbesian frameworks). This study posits that while most current and previous research focuses on the discrepancies between the frequency and intensity with which warfare takes place between hunter-gatherer and large-scale societies, the ability for societies to live in peace with their neighbors despite the possibility for warfare, is the most important evolutionary trait. Coexisting peacefully is what distinguishes human socially and politically from chimpanzees whereas warfare itself is a more primitive trait humans share with previous ancestors. Hames concludes that going forward, use of phylogenetic methods to control for common ancestry, and use of archaeological data would lead to new and more comprehensive findings. Although largely a review of principal warfare literature, Hames does present an original statistical finding on adult violence mortality which is reported below.