This is the first collection of articles completely and explicitly devoted to the new field of 'comparative developmental evolutionary psychology' - that is, to studies of primate abilities based on frameworks drawn from developmental psychology and evolutionary biology. These frameworks include Piagetian and neo-Piagetian models as well as psycholinguistic ones. The articles in this collection - originating in Japan, Spain, Italy, France, Canada and the United States - represent a variety of backgrounds in human and nonhuman primate research, including psycholinguistics, developmental psychology, cultural and physical anthropology, ethology, and comparative psychology. The book focuses on such areas as the nature of culture, intelligence, language, and imitation; the differences among species in mental abilities and developmental patterns; and the evolution of life histories and of mental abilities and their neurological bases. The species studied include the African grey parrot, cebus and macaque monkeys, gorillas, orangutans, and both common and pygmy chimpanzees.