The question as to why primates have evolved unusually large brains has received much
attention, with many alternative proposals all supported by evidence. We review the main …

▪ Abstract The social brain (or Machiavellian Intelligence) hypothesis was proposed to
explain primates' unusually large brains: It argues that the cognitive demands of living in …

The social brain hypothesis was proposed as an explanation for the fact that primates have
unusually large brains for body size compared to all other vertebrates: Primates evolved …

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 …

We present a detailed reanalysis of the comparative brain data for primates, and develop a
model using path analysis that seeks to present the coevolution of primate brain (neocortex) …

From the snub-nosed monkeys of China to the mountain gorillas of central Africa, our closest
nonhuman relatives are in critical danger worldwide. A recent report, for example, warns that …

Man the Hunted argues that primates, including the earliest members of the human family,
have evolved as the prey of any number of predators, including wild cats and dogs, hyenas …

Primates use social grooming to service coalitions and it has been suggested that these
directly affect the fitness of their members by allowing them to reduce the intrinsic costs …

The precise quantitative nature of the Environment of Evolutionary Adaptedness (EEA) is
difficult to reconstruct. The EEA represents a multitude of different geographic and temporal …

Predation is considered one of the most important selective pressures on free-ranging
animals. Our understanding of it derives mainly from studies of individual vigilance (visual …