Produkt mají v nabídce:
Egalitarians - Human and Chimpanzee - Power, Margaret (Simon Fraser University, British Columbia)
Using data from (non-feeding) field studies the author shows that chimpanzees live peacefully in non-hierarchical groups on home ranges open to all. This highly and necessarily positive mutual dependence system is characteristic of both undisturbed chimpanzees and humans who live by the 'immediate-return' foraging system.
