Using an evolutionary perspective, this study tests hypotheses relating gender and kinship roles to the amount of direct and indirect care provided during and around childbirth. The roles of paternal certainty, residence rules and descent groups are also examined.

Using an evolutionary perspective, this study tests hypotheses relating gender and kinship roles to the amount of direct and indirect care provided during and around childbirth. The roles of paternal certainty, residence rules and descent groups are also examined.

Using an evolutionary perspective, this study tests hypotheses relating gender and kinship roles to the amount of direct and indirect care provided during and around childbirth. The roles of paternal certainty, residence rules and descent groups are also examined.

This article focuses on parents’ investment of material resources at the time of their child’s marriage. Two patterns emerge from the data: wealth is generally transferred from the groom’s family to the bride’s and from the couple’s parents to the bride and groom. Social and ecological factors are also examined. Multiple regression analysis shows that paternal confidence level, societal polygyny rate, and level of pathogen stress can affect the aforementioned wealth transfer patterns.

This article examines the results of a study (Gaulin 1980) on male parental certainty and subsistence type. Methodological errors are assessed and the hypotheses are retested.

This study examines several aspects of human society that are associated with underlying patterns of genetic relationships. Results suggest that paternity certainty (measured by female extramarital promiscuity) is related to kinship terminology systems and marriage systems.

This study examines several aspects of human society that are associated with underlying patterns of genetic relationships. Results suggest that paternity certainty (measured by female extramarital promiscuity) is related to kinship terminology systems and marriage systems.

The present research inquires into the effects, if any, that male status and power have on extramarital sex, parental investment, and polygyny. Using sexual selection theory, the hypothesis is that males in higher positions of power and status are more likely to engage in extramarital sexual activities and be in polygynous relationships was supported. There was no support for an association between male extramarital sex and parental investment.

Textor summarizes cross-cultural findings on pregnancy and childbirth pertaining to cultural, environmental, psychological, and social phenomena.

This article examines the relationship between inheritance and paternity certainty. Results indicate an "association between relatively frequent female extramarital sex and a cultural norm that allows men to designate heirs whose relatedness is relatively unaffected by low probability of paternity."