This article examines predictors of intimacy between husbands and wives. Emphasis is on equality of spouses. A causal model is presented.

Using homicide rates as an indicator, this article examines the ecological factors that might be functioning as stressors in the environment of thirty-four East African tribes. A series of hypotheses dealing with the relationships between these stressors and tribal levels of aggressiveness are tested.

This book examines social, cultural, biological and psychological aspects of human sexuality. Sex and reproduction are both discussed in depth. Empirical analysis is included throughout, and an integrated model of sexuality is discussed. Only a few selected hypotheses are entered here.