Super-additive cooperation

Nature, Published online: 21 February 2024; doi:10.1038/s41586-024-07077-wModels show that human cooperation cannot evolve reliably under repeated interactions or under intergroup competitions, but combining the two mechanisms predicts a distinctive strategy, observed experimentally in Papua New Guinea, in which individuals exhibit cooperative reciprocity with ingroup partners and uncooperative reciprocity with outgroup partners.

  Nature & & science   Feb 25, 2024   0   61  Add to Reading List
Super-additive cooperation

Nature, Published online: 21 February 2024; doi:10.1038/s41586-024-07077-w

Models show that human cooperation cannot evolve reliably under repeated interactions or under intergroup competitions, but combining the two mechanisms predicts a distinctive strategy, observed experimentally in Papua New Guinea, in which individuals exhibit cooperative reciprocity with ingroup partners and uncooperative reciprocity with outgroup partners.
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