Authors undertook two studies to investigate the natures of work and play cross-culturally in children ages 6-10. The first study investigated potential variables affecting cross-cultural variation in the degree of children's contribution to economic work. The second study investigated the degree to which (and variables affecting why) forms of child's play reflect economic work and/or adult activities across various cultures.

The article discusses the role of toys and tools in the development of skills and cultural transmission in hunter-gatherer societies. The authors present a cross-cultural inventory of objects made for and by hunter-gatherer children and adolescents, finding that toys and tools were primarily handled outside of explicit pedagogical contexts, and there is little evidence for formalised apprenticeships. The authors suggest that children's self-directed interactions with objects, especially during play, have a critical role in early-age enskillment. Both boys and girls tend to use objects in work and play that emulate the gendered division of labor in their communities, and many objects made by and for children had full-scale counterparts. Finally, the authors argue that the peer group is crucial to skill acquisition in hunter-gatherer societies.

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.

This article explores factors affecting the status of the elderly, looking particularly at type of family, economy, and wealth transfer.

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.

This article explores factors affecting the status of the elderly, looking particularly at type of family, economy, and wealth transfer.

This article explores the association between father-son relationships and bridewealth. Bridewealth becomes an instrument through which male parents impose their will on their male offspring. The hypotheses are supported by the results presented.

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.

This article explores the association between father-son relationships and bridewealth. Bridewealth becomes an instrument through which male parents impose their will on their male offspring. The hypotheses are supported by the results presented.

This article investigates how population density affects social behavior, particularly whether it is a cause of stress in humans that manifests in pathological behavior or mistreatment of children. Analysis indicates that population density is not a cause of these behaviors, and with some variables (such as with divorce and sexual anxiety), there is a negative association with population density.