Peter Richerson: UC Davis Department of Environmental Science and PolicyReligion is often held to play a large, even dominant, role in supporting human cooperation. Much variation in propensities to cooperate […]

Joan Silk: UCLA Department of AnthropologyHumans differ from most other animals, and from virtually all other primates, in the extent of our dependence on cooperation. In humans, altruism seems to […]

Michael Cannon: CSU Long Beach Department of AnthropologySome archaeologists have used a model of optimal time allocation from human behavioral ecology to help explain variability over space and time in […]