Attempts to explain differences in the size and structure of primate groups have argued that
they are a consequence of variation in the intensity of feeding competition caused by …

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 …

This is an exciting time to be a primate behavioral ecologist. Only a decade ago, it seemed
as though there was a comfortable consensus shaping about the most important ecological …

How would we know when a theory has to be given up? Nobody is able to answer this
question. Contrary to the Popperian thesis, some counterevidence is not enough to falsify a …

Nonhuman primates occupy a special niche in anthropology because of the comparative
insights into humans they provide. Initial anthropological interest in primates targeted the …

Why do most primates form groups? Two influential hypotheses, both ecological, have been
forwarded to answer this question. The predator-defence hypothesis [1, 2] serves as a …

Previous analyses of the evolution of primate groups have typically examined the problem in
a different way, focussing on both sexes together rather than on females. The classical …

Because primates display such remarkable diversity, they are an ideal taxon within which to
examine the evolutionary significance of group living and the ecological factors responsible …

Most remaining populations of primates live in environments that have been influenced in
some way by humans (eg, protected forests bisected by major roads, forest–farm edges, and …

We review evolutionary processes and mechanisms that gave rise to the diversity of primate
social systems. We define social organization, social structure and mating system as distinct …