This study focuses on spousal responses to extramarital affairs cross-culturally. Results suggest that men and women are equally concerned with the sexual activities of their spouses, however, tactics used in response to infidelity vary by gender. Results also show a relationship between social complexity and responses to infidelity.

This study examines the variation in responses to sexual infidelity and the effect of social complexity and descent on responses to infidelity. Results suggest significant relationships between social complexity, descent, and responses to infidelity

Apostolou examines the argument that most of human evolution occurred in an environment where individuals had limited opportunity to exercise choice. This argument derives from evidence indicating that among contemporary and ancestral postindustrial societies, mate choice is regulated by parents choosing their children's spouses. Results from the present study show that in an arranged marriage setting, there is still space for individuals to exercise choice in mates (through premarital and extramarital relationships, as well as rape). Apostolou discusses possible explanations for these findings, as well as their evolutionary significance.

The authors examine a world-wide sample of cultures to assess whether the romantic-sexual kiss is a human universal. They also test for an association between romantic-sexual kissing and social complexity.

In this study, the authors analyze relationships between witchcraft accusations and the gender of the accused. They find that men are most often accused of witchcraft in their sample of 54 Bantu or Bantoid societies, and are particularly more likely to be accused of witchcraft by unrelated or blood-related individuals or in disputes over wealth or prestige. On the other hand, women are more likely to be accused of witchcraft in affinal relationships, particularly husbands and co-wives, and in situations related to fertility or relationships. Elderly women were also more likely to be accused of witchcraft than elderly men. The authors also examined outcomes of witchcraft accusations, finding that 81% of cases resulted in a negative outcome for the accused. They suggest that competition underlies accusations of witchcraft.

This article offers an exploratory study of the structural and psychological influences related co-wife conflict and cooperation.

This article suggests that Wilson's definition of sociobiology, which incorporates underlying principles of animal social behavior, can be applied to human bahvior. Specifically, Wilson's assertion that the major ecological conditions associated with monogamy in animal societies, is tested on human societies.

In an effort to better understand variation in jealous response cross-culturally, the researchers of this study surveyed 11 different populations, eight of which were small-scale societies on five different continents (Mayangna, Shuar, Tsimane, Himba, Hadza, Karo Batak, Mosuo, and Yasawa) and three of which were in urban settings (Los Angeles, CA, "urban India" (online), and Okinawa, Japan). Looking at the differences between sexual and emotional infidelity, researchers found that greater paternal investment and lower frequency of extramarital sex are associated with more severe jealous response.

The relationships of aggression and crime to variables of childhood experience, adult behavior, and social structure are cross-culturally analyzed.

This study explores cultural variables associated with frequency of drunkenness and ceremonial drinking. Particular attention was paid to childhood socialization variables, as well as politcal and social organization. Results show a low correlation between frequency of drunkenness and frequency of ceremonial drinking, and various other variables are associated with each.