This article examines reasons for the variation in sexual foreplay practices cross-culturally. Results suggest that exclusive mother-child sleeping arrangements is significantly associated with the presence of foreplay.

This article examines reasons for the variation in sexual foreplay practices cross-culturally. Results suggest that exclusive mother-child sleeping arrangements is significantly associated with the presence of foreplay.

This article examines reasons for the variation in sexual foreplay practices cross-culturally. Results suggest that exclusive mother-child sleeping arrangements is significantly associated with the presence of foreplay.

This article examines the restriction of women in religious ritual, focusing on cultural traits that favor men's power. Results suggest that patrilineality and male inheritance correlate with the restriction of women’s participation in ritual.

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.

This study explores why initiation rites for girls are observed in some societies and absent in others. Further, the author seeks to understand cross-cultural variation in the rites.

This article examines height and sexual dimorphism of stature from a sociobiological perspective. Diet, child rearing, and marriage practices are tested as possible factors contributing to height sexual dimorphism of stature. Results provide some support for a nutritional hypotheses, but sexual selection and parental investment are not statistically significant.

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.

Textor summarizes cross-cultural male initiation rites findings pertaining to cultural, environmental, psychological, and social phenomena.

This article uses signaling theory and tests for a relationship between costly male rites and frequency of warfare.