This study uses logistic regression to test the relationship between homosexuality and ecological and psychosocial variables. Significant associations were found between the frequency of homosexuality and type of agriculture, the occurrence of gathering, and psychosocial stressors in women's lives.

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 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.

The researcher predicts a positive association between prevalence of homosexuality and agricultural and pastoral subsistence types, reasoning that higher frequency of arranged marriages among agropastoral societies will lessen negative selection pressure on genes which encode for non-exclusive heterosexual orientation. Findings appear to support the prediction.

This study tests the weaning food availability hypothesis, that both the introduction of foods other than breastmilk and the cessation of breastfeeding will vary by society's subsistence type. This hypothesis has implications for demography, as accelerated weaning can lead to increases in both mothers' fertility (due to decreased birth intervals) and infant mortality (due to the presence of pathogens in new foods).

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.

Apostolou examines the argument that most of human evolution occurred in an environment where individuals had limited opportunity to exercise choice. This argument derives from evidence indicating that among contemporary and ancestral postindustrial societies, mate choice is regulated by parents choosing their children's spouses. Results from the present study show that in an arranged marriage setting, there is still space for individuals to exercise choice in mates (through premarital and extramarital relationships, as well as rape). Apostolou discusses possible explanations for these findings, as well as their evolutionary significance.

This study tests the weaning food availability hypothesis, that both the introduction of foods other than breastmilk and the cessation of breastfeeding will vary by society's subsistence type. This hypothesis has implications for demography, as accelerated weaning can lead to increases in both mothers' fertility (due to decreased birth intervals) and infant mortality (due to the presence of pathogens in new foods).

The researcher predicts a positive association between prevalence of homosexuality and agricultural and pastoral subsistence types, reasoning that higher frequency of arranged marriages among agropastoral societies will lessen negative selection pressure on genes which encode for non-exclusive heterosexual orientation. Findings appear to support the prediction.

The researcher predicts a positive association between prevalence of homosexuality and agricultural and pastoral subsistence types, reasoning that higher frequency of arranged marriages among agropastoral societies will lessen negative selection pressure on genes which encode for non-exclusive heterosexual orientation. Findings appear to support the prediction.