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."

This article presents a reanalysis of the theory put forth by Hartung (1981) regarding the relationship between inheritance and paternity confidence. The authors take issue with the original sample used and retest the hypothesis.

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 study discusses many variables that may influence the direction of altruism within a family. Significant relationships were found between paternity certainty, conjugal instability, marital residence, cross-cousin marriage preferences, and direction of altruistic behavior. Special emphasis is placed on the importance of the mother's brother.

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 chapter explores and tests some propositions about matrilineal societies. Supplementary to that discussion, the author also explores the problems of method associated with the use of coded data on large samples of cultures.

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.

Using paternal investment theory, the authors examine the relationship between paternal confidence and paternal investment in humans.

Textor summarizes cross-cultural findings on extramarital sexual relations pertaining to cultural, environmental, psychological, and social phenomena.

In this article, the author argues that matrilocality is a form of social organization that is conducive to expansion in tribal societies with smaller populations. Because this organization increases internal solidarity and success in external warfare, the theory suggests that it is best suited for expansion on cultural frontiers by groups with small populations. The author supports this theory with empirical tests on 33 societies and case studies of Bantu and Austronesian expansion.