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Old World Monkeys Are More Similar To Humans Than New World Monkeys When Playing A Coordination Game, Sarah F. Brosnan, Bart J. Wilson, Michael J. Beran

Psychology Faculty Publications

There is much debate about how humans’ decision-making compares to that of other primates. One way to explore this is to compare species’ performance using identical methodologies in games with strategic interactions. We presented a computerized Assurance Game, which was either functionally simultaneous or sequential, to investigate how humans, rhesus monkeys, and capuchin monkeys utilized information in decision-making. All species coordinated via sequential play on the payoff-dominant Nash equilibrium, indicating that information about the partner’s choice improved decisions. Furthermore, some humans and rhesus monkeys found the payoff-dominant Nash equilibrium in the simultaneous game, even when it was the first condition …