The idea that competition and aggression are central to an understanding of the origins of
group‐living and sociality among human and nonhuman primates is the dominant theory in …

This chapter focuses on the following three questions: how much time do different primate
species actually spend in social behavior? How much of this behavior is friendly and how …

Nonhuman primates commonly compete for mates, physical resources and dominance
status. Competition is manifest in one‐to‐one contests or in more complex, multipartite …

Primates are a large and diverse order of mammals. They play an important role in studies of
the evolution of sociality because there is considerable diversity in social organization and …

Anthropological interest in nonhuman primates as models for human behavioral evolution
has tended to focus on a relatively small number of species. This emphasis, coupled with a …

Primates do not donate to National Public Radio or give blood, but they do perform a variety
of altruistic behaviors. That is, they act in ways that reduce their own fitness, but increase the …

The importance of between-group competition in the social evolution of animal societies is
controversial, particularly with respect to understanding the origins and maintenance of …

P RIMATE SOCIALITY has many faces. Some callitrichines form small groups with just one
reproducing female and others who help care for her young. Hamadryas baboons (Papio …

Cooperation is a fundamental characteristic of human social life. Cooperative bonds
between mothers and offspring, husbands and wives, infants and grandmothers, sisters and …

The explication of altruistic behavior in primates remains complex. Gregarious, socially
complex primates are characterized by a diverse array of social behavior patterns with …