The researchers develop and compare two evolutionary models to evaluate the association between social stratification and female genital modification(FGMo) in a cross-cultural African sample, theorizing that social hierarchy creates competition for high-value males in which FGMo acts as a costly demonstration of paternity certainty. Although the null model outperforms the stratification model when applied to empirical data, an association between FGMo and stratification is found in the expected direction. The authors suggest that while stratification may be an important factor in the de novo origins of FGMo, spread and persistence of the practice subsequently become more heavily dependent on other selective forces.

Researchers examine ethnographic literature from Africa and Colombia and conduct interviews in 12 Colombian cities with the aim of exploring the connection between female genital modification (FGMo) in Colombia and Africa. They theorize that the trans-atlantic slave trade was the start of sociocultural transmission of FGMo pratices to Colombia, and that this will be evident based on the presence of FGMo practices and the composition and connectivity of populations.

Researchers examine ethnographic literature from Africa and Colombia and conduct interviews in 12 Colombian cities with the aim of exploring the connection between female genital modification (FGMo) in Colombia and Africa. They theorize that the trans-atlantic slave trade was the start of sociocultural transmission of FGMo pratices to Colombia, and that this will be evident based on the presence of FGMo practices and the composition and connectivity of populations.

Researchers examine ethnographic literature from Africa and Colombia and conduct interviews in 12 Colombian cities with the aim of exploring the connection between female genital modification (FGMo) in Colombia and Africa. They theorize that the trans-atlantic slave trade was the start of sociocultural transmission of FGMo pratices to Colombia, and that this will be evident based on the presence of FGMo practices and the composition and connectivity of populations.

Researchers examine ethnographic literature from Africa and Colombia and conduct interviews in 12 Colombian cities with the aim of exploring the connection between female genital modification (FGMo) in Colombia and Africa. They theorize that the trans-atlantic slave trade was the start of sociocultural transmission of FGMo pratices to Colombia, and that this will be evident based on the presence of FGMo practices and the composition and connectivity of populations.

In this article, the authors reconsider the polygyny threshold model in order to account for the "polygyny paradox." This paradox, as the authors define it, is the trend away from polygyny as societies adopt stratified agricultural economies. This is despite an increase in both the importance of material wealth and greater leaves of wealth inequality both of which would otherwise suggest increased polygyny. The authors develop a new model that does account for this paradox.

In this article, the authors reconsider the polygyny threshold model in order to account for the "polygyny paradox." This paradox, as the authors define it, is the trend away from polygyny as societies adopt stratified agricultural economies. This is despite an increase in both the importance of material wealth and greater leaves of wealth inequality both of which would otherwise suggest increased polygyny. The authors develop a new model that does account for this paradox.

In this article, the authors reconsider the polygyny threshold model in order to account for the "polygyny paradox." This paradox, as the authors define it, is the trend away from polygyny as societies adopt stratified agricultural economies. This is despite an increase in both the importance of material wealth and greater leaves of wealth inequality both of which would otherwise suggest increased polygyny. The authors develop a new model that does account for this paradox.

Using data on 25 ethnolinguistic groups in the Austronesian language family, this study asks: does cooperation in games vary with socio-ecological differences across cultural groups? The authors suggest that cultural groups that cooperate in subsistence, tend to have intergroup conflict and less intragroup conflict, and are less socially stratified are more likely to play cooperative games compared to other groups. While the results support the first three hypotheses, there is insufficient data to support the fourth. The authors conclude that games serve as training ground for group norms and values.

Using data on 25 ethnolinguistic groups in the Austronesian language family, this study asks: does cooperation in games vary with socio-ecological differences across cultural groups? The authors suggest that cultural groups that cooperate in subsistence, tend to have intergroup conflict and less intragroup conflict, and are less socially stratified are more likely to play cooperative games compared to other groups. While the results support the first three hypotheses, there is insufficient data to support the fourth. The authors conclude that games serve as training ground for group norms and values.