Great Apes' Risk-Taking Strategies in a Decision Making Task
Great Apes' Risk-Taking Strategies in a Decision Making Task
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DOI：
10.1371/journal.pone.0028801
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发表时间：
2011-12-21
期刊：
影响因子：
3.7
通讯作者：
Call, Josep
中科院分区：
文献类型：
--
作者：
Haun, Daniel B. M.;Nawroth, Christian;Call, Josep
我们研究了所有四种非人类类人猿的决策行为。在不同期望值的试验中，猿类在安全和风险之间做出选择。所有物种都更经常地选择安全的选择，成功的概率越来越低。虽然所有物种都是寻求风险的，但猩猩和黑猩猩比大猩猩和倭黑猩猩更经常选择冒险。因此，所有四个物种的偏好都是以符合期望值的规范性规定的方式排列的，但可以预见的是，它们的冒险意愿会有所不同。
We investigate decision-making behaviour in all four non-human great ape species. Apes chose between a safe and a risky option across trials of varying expected values. All species chose the safe option more often with decreasing probability of success. While all species were risk-seeking, orangutans and chimpanzees chose the risky option more often than gorillas and bonobos. Hence all four species' preferences were ordered in a manner consistent with normative dictates of expected value, but varied predictably in their willingness to take risks.