Lowes and Nunn test the theory that the transatlantic and Indian Ocean slave trades of the thirteenth to nineteenth centuries prompted a shift towards matrilineal kinship systems throughout sub-Saharan Africa. Controlling for ecological variables commonly thought to affect kinship structure (including ruggedness of terrain, suitability for agriculture, etc.), the authors find a significant correlation between the number of people enslaved from a given ethnic group, and the tendency of that group towards a matrilineal kinship system. Polygyny was also identified as a statistically significant characteristic of communities most impacted by the slave trade.

This article examines direction of succession and inheritance as they relate to culture area and kinship system. Several hypotheses are presented and all are supported.

The article investigates whether more socially restrictive societies provide more outlets for aggression. These authors operationalized restrictiveness with the presence of sorcery and unilineal kinship structure; the two outlets for aggression examined were occurrence of warfare and games of physical skill. Results suggest an association between these variables, though unilineal kinship structure was the better predictor of the existence of warfare.

This article studied the effects of common law in Sub-Saharan Africa on property rights of women and its relationship to intimate partner violence. The authors first compared intimate partner violence (IPV) in 593 ethnic groups with a separate marital property regime against groups with a community marital property regime. Then, the authors examined the correlation between women who justify IPV and the presence of a separate marital property regime. They found that separate marital property both increased the likelihood of intimate partner violence and the justification of IPV when compared to a community property regime. The authors use these findings to advocate for marital property rights reform to help reduce partner violence cases.

This article examines parent-in-law avoidance in non-industrial societies. The author suggests that in-law avoidance is associated with characteristics of kinship structure, such as lineality, residence and family type. A psychological interpretation is also offered. Results support hypotheses relating to kinship structure.

From 1600 to 1900, the ratio of men to women enslaved and exported in the African slave trade was roughly 181:100 – in other words, nearly two men were enslaved for every woman. It has long been theorized that this historical disparity continues to affect Africa’s cultural and political systems. In this article, the authors examine the impact of temporary gender imbalances caused by the slave trade on female political participation in modern African nation-states. They find that female political participation (measured using national voting records from 2011–2018) is higher in parts of Africa that lost a greater number of individuals to the slave trade, but only among non-patrilineal ethnic groups.

Researchers examined kinships terminology systems for explanations regarding specifically observed typology of kin terms for cousins cross-culturally. They explore two theories, the first relating to population size via bottleneck evolution, and the second relating to social practices that shape kinship systems. Using the Ethnographic Atlas within D-PLACE, 936 societies with kinship system information were studied. The findings did not suggest a relationship between increased community size and a decrease in kinship complexity, however the research does suggest a relationship between practices of marriage and descent and kinship complexity.

This article examines the effect of infant care on women's contribution to subsistence. Results suggest that women who begin supplementary feeding of their infants early participate in subsistence activities to a greater degree than women who begin supplementary feedings later.

This article examines variation in kinship terminology. The authors develop a new typology of kinds of kinship terminologies, and they propose that terminologies will distinguish siblings of the same and opposite gender when there is a cultural emphasis on cross-sex relations. Empirical analysis supports that a prolonged post-partum sex taboo (rather than sibling avoidance) predicts the presence of a primary cross-parallel component in sibling terminology.

Kinbank is a global database of 210,903 kinship terms derived from 1,229 spoken and signed languages. The authors created Kinbank as a tool to help explain recurring patterns across cultures through kinship terminology. They illustrate its usefulness by addressing two questions as an example: 1) Is there gender bias in the phonological structure of parent terms? and 2) Did bifurcate-merging terminology and cross-cousin marriage co-evolve in Bantu languages? Using a Bayesian phylogenetic approach, the authors find support for the first question, but none for the latter.