Sharing spreads in Hadza hunter gatherers: Insights into the evolution of cooperation

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How does cooperation evolve in humans? Researchers from the University of Pennsylvania use data from the Hadza, a nomadic hunter-gatherer group, to answer this question. Hadza cooperation clusters in camps, with some camps having more cooperators than others. This clustering happens not because people are choosing to live with other cooperators, but because Hadza transmit norms to one another about how much to cooperate. These findings highlight the importance of human flexibility for the evolution of cooperation. This work is published in Current Biology. Websites http://corenapicella.com https://www.kristophermsmith.com https://www.hbo-lab.com Twitter https://twitter.com/corenapicella https://twitter.com/kris_m_smith https://twitter.com/Penn