Authors hypothesize that grammatical sex gender may be related to social structural variables. Results support this hypothesis and suggest that the degree of sex bias in the social structure is associated with the relative frequency of masculine and feminine nouns in languages with sex gender.

This paper is concerned with the variation in sexual behavior in humans. Authors test hypotheses regarding the relationships between sexual behaviors and beliefs concerning sex.

This book chapter examines relationships between the child-training behavior of mothers and the responsibilities of both mothers and others. Child-training behavior is also examined in relation to single and multiple family dwellings.

This study relates female contributions to a variety of social variables. The author divides responses to high female contribution to subsistence into two categories: adaptive (i.e. increased exogamy, polygyny, and bridewealth) and attitudinal (i.e. increased valuation of girls and premarital permissiveness). It is proposed that where women contribute more, “they are perceived less as objects for male sexual and reproductive needs and more as a person in their own right” (149).

Is grammatical complexity shaped by sociodemographic and sociolinguistic factors? The previously accepted "linguistic niche hypothesis" claims that with an increased number of nonnative speakers in a social group (high exotericity), grammatic complexity decreases; on the other hand, grammatical complexity increases amongst isolated linguistic communities (low exotericity). Through the use of spatiophylogenetic modelling of 1314 languages, the authors of this study do not find adequate evidence to support the linguistic niche hypothesis. Instead, they suggest that linguistic complexity is better predicted by phylogeny and geographic contiguity.

This study investigates the conceptual frameworks involved in infanticide. Authors first examine data on infanticide and birth ceremonies, particularly the timing of these events and the infant and adult involved in each. Authors also examine reasons for performing infanticide, including illegitimacy, unwanted children, and excess children, finding them similar to reasons for performing abortion. Population control and implications for children's and women's status are also discussed.

This article proposes that differences in diet may account for the presence or absence of morning sickness in a society. Data suggest that morning sickness is not a universal symptom of pregnancy, and there are significant differences in foods consumed where morning sickness does not occur, including more maize, fats, and vegetables.

This article explores the relationship between language structure and social environment, positing that linguistic factors such as morphological complexity are associated with demographic/socio-historical factors such as number of speakers, geographic spread, and degree of language contact. Data support such an association. The authors further propose a Linguistic Niche Hypothesis suggesting that “the level of morphological specialization is a product of languages adapting to the learning constraints and the unique communicative needs of the speaker population” (7).

This article investigates the relationships between culturally defined frustrating agents and various types of culturally defined targets of aggressive response. Findings indicate relationships between extrapunitive outlook and extrapunitive responsiveness and impunitive outlook and impunitive responsiveness.

Female genital mutilations within Africa are associated with strong fraternal interest groups, virginity tests, and conservative permarital sex norms. Codes and ratings for female genital mutilations, virginity tests, premarital sex norms, and female initiation rites are presented in this article.