This study tests predictions of homosexuality. Results suggest that homosexuality is significantly associated with father-son contact.

This study tests predictions of homosexuality. Results suggest that homosexuality is significantly associated with father-son contact.

This article examines three theories regarding the existence of pollution rules. Results show support for a psychological theory put forward by Freud that predicts a relationship between father-child contact, post-partum sex taboos, and menstrual taboos.

This article examines three theories regarding the existence of pollution rules. Results show support for a psychological theory put forward by Freud that predicts a relationship between father-child contact, post-partum sex taboos, and menstrual taboos.

This study tests predictions of homosexuality. Results suggest that homosexuality is significantly associated with father-son contact.

This article examines three theories regarding the existence of pollution rules. Results show support for a psychological theory put forward by Freud that predicts a relationship between father-child contact, post-partum sex taboos, and menstrual taboos.

This study explores ecological reasons that might explain why boys are mostly circumcised in tropical regions, particularly in Africa and the insular Pacific. The author postulates a long causal chain linking: 1) tropical climate to the growing of root and fruit crops; 2) the need to keep babies on mother's milk for as long as possible where the adult diet is lacking in protein; 3) a long post-partum sex taboo as a way to space births; 4) the practice of polygyny (and associated mother-child sleeping) in the face of a long sex taboo; 5) patrilocal residence; and 6) male initiation ceremonies which are believed to result from the combination of mother-child sleeping, the long poast-partum sex taboo and patrilocal residence.

This study investigates theories of male initiation ceremonies. The author examines a hypothesis related to child-rearing variables (sleeping arrangements and post-partum taboo) and rejects it based on empirical analysis. An alternative hypothesis related to male solidarity is offered.

The author attempts to test the "Oedipus-complex" hypothesis--the psychoanalytic idea that under certain conditions (such as the long-post partum sex taboo) males are sexually attracted to their mothers and as a consequence certain fears and anxiety are generaated. The hypothesis is tested at the societal-level using ethnographic data.

This article examines reasons for the variation in sexual foreplay practices cross-culturally. Results suggest that exclusive mother-child sleeping arrangements is significantly associated with the presence of foreplay.