In this study, the authors analyze the evolutionary history of female and male marital dispersal norms in Sino-Tibetan ethnic groups. They also test for the coevolution of agriculture, domesticated cattle pastoralism, and unilineal descent with these dispersal norms. Results indicate that early Sino-Tibetans were likely patrilocal, agriculture and unilineal descent coevolved with female dispersal norms, and cattle domestication did not coevolve with dispersal norms in Sino-Tibetan ethnic groups.

In this study, the authors analyze the evolutionary history of female and male marital dispersal norms in Sino-Tibetan ethnic groups. They also test for the coevolution of agriculture, domesticated cattle pastoralism, and unilineal descent with these dispersal norms. Results indicate that early Sino-Tibetans were likely patrilocal, agriculture and unilineal descent coevolved with female dispersal norms, and cattle domestication did not coevolve with dispersal norms in Sino-Tibetan ethnic groups.

Previous studies have proposed a model of sexual selection that dictates that along with female and male choice, parental choice constitutes a significant sexual selection force in our species. This article aims at examining whether this model can also account for the mating patterns typical of agricultural and pastoral societies. The hypotheses are supported by the results presented.

The study is about matrilineal systems, where descent is traced along female lines. Matrilineal systems are relatively rare in human populations, and previous research has discussed the rarity and apparent instability of matriliny. The study aims to study the evolution of descent systems on a worldwide scale. The study tests for significant associations between matriliny and numerous cultural traits that have been theoretically associated with its stability or loss, such as subsistence strategy, animal domestication, mating system, residence pattern, wealth transfer, and property succession. Additionally, by combining genetic and linguistic information to build a global supertree that includes 16 matrilineal populations, the study also performs phylogenetically controlled analyses to assess the patterns of correlated evolution between descent and other traits.

This article uses factor analysis to identify the key variables underlying the many cross-cultural associations reported by Textor (1967). Twelve factors are identified.

This study is a comprehensive analysis of female and male genital mutilation/cutting (FGM/C and MGM/C) practices, including their history and socio-ecological correlates, using a phylogenetic cross-cultural framework. It employed two global ethnographic samples, the Ethnographic Atlas (EA) and the Standard Cross-Cultural Sample (SCCS), and two subsets of the phylogeny (supertree) of human populations based on genetic and linguistic data, to investigate the variables that may have led to the introduction of these practices, and to determine where and when they may have originated. The study suggests that MGM/C probably originated in polygynous societies with separate residence for co-wives, supporting a mate-guarding function, and that FGM/C likely originated subsequently and almost exclusively in societies already practicing MGM/C, where it may have become a signal of chastity. Both practices are believed to have originated multiple times, some as early as in the mid-Holocene (5,000–7,000 years ago). The study posits that GM/C co-evolves with and may help maintain fundamental social structures and that the high fitness costs of FGM/C are offset by social benefits, such as enhanced marriageability and social capital.

Using a cross-cultural sample of 91 societies, this paper draws on ecological theory to test if unpredictable environments will favor subsistence diversification. The general hypothesis is that societies with high climate unpredictability and resource stress would exhibit more subsistence diversity than societies in more stable climates. The authors examined four environmental and resource stress variables while controlling for temperature variance, subsistence activity, and phylogeny. Support was found for 2 of the 4 variables--chronic scarcity and environmental instability. In the discussion they suggest that more commonly observed events (e.g. annual hunger and climate unpredictability) may give people more motivation to change subsistence than rarer events (e.g. natural hazards and famine).

This paper builds on previous Austronesian dispersal research that indicated rituals and social complexity gave rise to each other, by examining if marital residence and initiation rites co-evolved during the dispersal. Using a phylogenetic test and initiation data from 79 societies, the authors found evidence that female and male initiation rites co-evolved during the dispersal and were most stable when both initiation rites were present. The authors also suggest that proto-Austronesian society probably lacked initiation rites and such rites only developed later.

The study is about matrilineal systems, where descent is traced along female lines. Matrilineal systems are relatively rare in human populations, and previous research has discussed the rarity and apparent instability of matriliny. The study aims to study the evolution of descent systems on a worldwide scale. The study tests for significant associations between matriliny and numerous cultural traits that have been theoretically associated with its stability or loss, such as subsistence strategy, animal domestication, mating system, residence pattern, wealth transfer, and property succession. Additionally, by combining genetic and linguistic information to build a global supertree that includes 16 matrilineal populations, the study also performs phylogenetically controlled analyses to assess the patterns of correlated evolution between descent and other traits.

This article discusses initiation rites for girls. Specifically explored are the reasons why the ceremonies are observed in some societies and omitted in others and what the variations between societies demonstrates.