This article evaluates theories of the origins of sex differences in human behavior. It reviews
the cross-cultural evidence on the behavior of women and men in nonindustrial societies …

Although it is commonly believed that women are kinder and more cooperative than men,
there is conflicting evidence for this assertion. Current theories of sex differences in social …

Gender roles are nowhere more prominent than in war. Yet contentious debates, and the
scattering of scholarship across academic disciplines, have obscured understanding of how …

Are humans by nature hierarchical or egalitarian? Hierarchy in the Forest addresses this
question by examining the evolutionary origins of social and political behavior. Christopher …

" Remarkable and utterly fascinating"(Jane Goodall), author Dale Peterson and Harvard
University biological anthropology professor Richard Wrangham's Demonic Males: Apes …

The chimpanzees are the closest living evolutionary relatives to our own species, Homo
sapiens. As such, they have long exerted a fascination over those with an interest in human …

Altruism—benefiting fellow group members at a cost to oneself—and parochialism—hostility
toward individuals not of one's own ethnic, racial, or other group—are common human …

The Ache, whose life history the authors recounts, are a small indigenous population of
hunters and gatherers living in the neotropical rainforest of eastern Paraguay. This is part …

Since Darwin, intergroup hostilities have figured prominently in explanations of the evolution
of human social behavior. Yet whether ancestral humans were largely “peaceful” or “warlike” …

Recent experimental research has revealed forms of human behavior involving interaction
among unrelated individuals that have proven difficult to explain in terms of kin or reciprocal …