Are capuchin monkeys (Cebus apella) inequity averse?
Are capuchin monkeys (Cebus apella) inequity averse?
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DOI：
10.1098/rspb.2005.3433
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发表时间：
2006-05-22
影响因子：
4.7
通讯作者：
Visalberghi, Elisabetta
中科院分区：
文献类型：
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作者：
Dubreuil, Diane;Gentile, Maria Silvia;Visalberghi, Elisabetta
据报道，当卷尾猴看到伴侣卷尾猴因为完成相同的任务而得到更喜欢的食物(PF)时，它们会拒绝不太喜欢的食物(LPF)。这一行为被认为是“不公平厌恶”的证据，但另一种假设是，卷尾猴拒绝LPF仅仅是因为PF的存在。我们在一个范例中测试了这一假设，包括在托盘上放两种不同的食物(一种PF和一种LPF)，并允许卷尾猴只吃LPF。与将两片LPF放在托盘上时(对照条件)相比，当PF被隐藏(隐藏状态)和当PF在视线内但远离受试者时(累积条件)，拒绝启动试验和拒绝服用LPF的次数更高。有趣的是，当受试者的伴侣被给予并吃了PF(伴侣条件)时，受试者的行为就像在对照条件下一样。我们认为，卷尾猴的拒绝是因为看到和没有获得PF而感到沮丧，看到伴侣吃东西会增加LPF的接受度。
It has been reported that capuchin monkeys reject a less preferred food (LPF) when they see a partner capuchin receive a more preferred food (PF) for performing the same task. This behaviour was taken as evidence of 'inequity aversion', but an alternative hypothesis is that capuchins reject the LPF because of the mere presence of the PF. We tested this hypothesis in a paradigm, which consisted of presenting two different foods (one PF and one LPF) on a tray and allowing the capuchin to take only the LPF. Refusals to initiate the trial and refusals to take and eat the LPF were higher when the PF was hidden (hiding condition) and when the PF was accumulated in sight but out of reach of the subject (accumulation condition) compared to when two pieces of LPF were placed on the tray (control condition). Interestingly, the subject behaved as in the control condition when its partner was given and ate the PF (partner condition). We argue that capuchins' refusals were due to the frustration of seeing and not obtaining the PF, and that seeing the partner eating increases the LPF acceptance.