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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
The Endowment Effect In Orangutans, Timothy M. Flemming, Owen D. Jones, Laura Mayo, Tara Stoinski, Sarah F. Brosnan
The Endowment Effect In Orangutans, Timothy M. Flemming, Owen D. Jones, Laura Mayo, Tara Stoinski, Sarah F. Brosnan
Psychology Faculty Publications
The endowment effect is the tendency to, seemingly irrationally, immediately value a possessed item more than the opportunity to acquire the identical item when one does not already possess it. Although endowment effects are reported in chimpanzees (Brosnan, Jones, Lambeth, Mareno, Richardson, & Shapiro, 2007) and capuchin monkeys (Lakshminarayanan, Chen, & Santos, 2008), both species share social traits with humans that make convergence as likely an evolutionary mechanism as homology. Orangutans (Pongo spp.) provide a unique insight into the evolution of the endowment effect, along with other apparently irrational behaviors, because their less frequent social interactions and relatively more …
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
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 …