Capuchin monkeys (Sapajus [Cebus] apella) play Nash equilibria in dynamic games, but their decisions are likely not influenced by oxytocin
Capuchin monkeys (Sapajus [Cebus] apella) play Nash equilibria in dynamic games, but their decisions are likely not influenced by oxytocin
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卷尾猴（Sapajus [Cebus] apella）在动态博弈中玩纳什均衡，但它们的决定可能不受催产素的影响
DOI：
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发表时间：
2019
影响因子：
2.4
通讯作者：
S. Brosnan
中科院分区：
文献类型：
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作者：
Mackenzie F Smith;Kelly L. Leverett;B. Wilson;S. Brosnan
实验经济学的比较方法揭示了包括人类在内的一系列灵长类物种的社会决策的进化。在这里，我们重复我们以前的工作，观察六对卷尾猴（Sapajus [Cebus] apella）对需要协调（保证游戏）和反协调（Hawk-Dove游戏）的场景的反应。然后，这提供了一个基础，以评估他们的反应，两个额外的游戏，一个是有益的合作与诱惑叛逃（囚徒困境）的情况下，一个与环境，需要改变战略在短期内接近（交替经济游戏）。我们还探讨了外源性催产素对决策的影响。催产素并没有影响我们在任何游戏中的决定。前两个游戏的结果在很大程度上复制了我们之前的发现。对囚徒困境的反应比以前的游戏更多样化，两人分别合作，背叛，以及未能建立稳定的策略。这种差异性表明，这个游戏可能是一个很好的分析社会决策中的个体差异。最后，卷尾猴能够在每个不同游戏中灵活地在先前建立的策略之间切换，即使游戏在同一会话中呈现，需要在短时间内调整策略。这些结果建立在早期发现的基础上，这些发现表明卷尾猴可以根据上下文的要求改变决策策略，这对于自然发生的上下文中的决策可能至关重要。
Comparative approaches to experimental economics have shed light on the evolution of social decision‐making across a range of primate species, including humans. Here we replicate our previous work looking at six pairs of capuchin monkeys' (Sapajus [Cebus] apella) responses to scenarios requiring both coordination (Assurance Game) and anti‐coordination (Hawk‐Dove Game). This then provides a foundation for assessing their responses to two additional games, one with a scenario of beneficial cooperation with a temptation to defect (Prisoner's Dilemma) and one with an environment requiring changing strategies within short temporal proximity (Alternating Economic Game). We additionally explored the effects of exogenous oxytocin on decision‐making. Oxytocin did not affect decisions in any of our games. Results from the first two games largely replicated our previous findings. Responses to the Prisoner's Dilemma were more varied than was seen in previous games, with pairs respectively cooperating, defecting, and failing to establish stable strategies. Such variability indicates that this game may be a good assay for individual differences in social decision‐making. Finally, capuchins were able to flexibly switch between their previously established strategies within each of the different games, even when the games were presented within the same session, requiring strategy adjustments within short temporal proximity. These results build on earlier findings showing that capuchins can alter decision‐making strategies as the context demands, which is likely essential for decision‐making in naturally occurring contexts.
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