Richard Wrangham – Hunter-Gatherers, Homo duplex and the Evolution of Human Groupishness
Groupishness is a tendency to commit prosocial acts for which the pathway to compensatory fitness benefits is unpredictable. It is unique to humans, and its evolution is not well understood. A difficulty is that the adaptive value of groupishness comes from indirect reciprocity, which is hard to explain in societies that contain power asymmetries such […]