This article reviews aspects of cooperative breeding in humans and nonhumans. Life history characteristics, childcare helpers, and demographic implications of cooperative breeding are examined. Cross-cultural data is presented, though no empirical hypotheses are tested.

The author explicitly defines and provides code for male and female age organizations and secret societies in Africa, as well as their significant sociopolitical roles within society. The author conducts preliminary analysis using the codes to explore characteristics and regional patterns of such organizations and societies. The analysis is compared to existing studies in order to assess the code and better understand cross-cultural patterns and variances. The author identifies the usefulness of the code beyond Africa, and discusses avenues for future research. No explicit hypotheses were tested, but Ericksen includes some descriptive generalizations.

This article examines cross-cultural variation in customary birth practices for men and women, testing a general hypothesis that birth practices represent tactics in negotiations over paternity. Data supports this hypothesis, and a series of related variables are tested in bivariate analysis and path analysis. Findings suggest that compensation demands at birth are associated with maternal restrictions from paternity-related agreements (e.g. maternal seclusion during birth), and fraternal interest groups are associated with the husband’s ritual involvement at birth (e.g. demonstration of the couvade).

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.

Feuding and other responses to malfeasance are examined cross-culturally. The geographic distribution of responses are presented and odds ratios/logistic regression models are employed in analyzing the effect of socio-economic, historical and ecological variables on responses to malfeasance. Codes are included.

This article examines the relationship between grammatical forms and a society’s economic activity, particularly whether property-based societies are more likely to develop the possessive verbs. Analysis supports an association.

This study replicates John L. Fischer's (1961) cross-cultural analysis to demonstrate the correlation between art styles and social hierarchy and postmarital residence. The author suggests that archaeological ceramics might be used to predict social characteristics of prehistoric societies.

An early cross-cultural study that sought to establish correlations between "stages" of economic culture and a variety of different social and political institutions, such as form of government and justice, marriage and kinship, and behaviors during warfare.

This study focuses on predictors of divorce, cross-culturally. Variables measuring infidelity, infertility, personality, economy, kin, absence, health, ritual and politics are tested. An evolutionary/adaptionist approach is found to be most useful in explaining the nature of conjugal dissolution cross-culturally.

This article discusses the ability of evolutionary theory to generate new hypotheses about human social behavior. Four hyotheses from a previous study are used to support these ideas.