REACTIONS TO (IN) EQUALITY IN CAPUCHIN MONKEYS

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 为了让群居动物对彼此做出适当的反应，它们需要知道彼此的性别、社会地位和它们所处的状态(例如它们是饥饿、痛苦、恐惧还是咄咄逼人)。这个项目调查了棕色卷尾猴(Cebus Apella)对其队友的了解。它要求他们根据投射到电脑屏幕上的肖像来指明哪一个属于他们的群体。它要求他们根据呼叫者的身份将叫声评为厌恶或吸引人(例如，雌性猴子是否觉得自己后代发出的求救信号比无关青少年发出的求救信号更令人厌恶？)，并根据猴子对饥饿状态的了解评估它们是否与他人分享食物，看看它们是否考虑到了其他人的需求。可用的卷尾猴有30只，饲养在室内/室外的围栏里，接受过临时隔离的训练，以便进行实验。这项拟议的研究阐明了通常被视为理所当然的基本社会认知。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. For social animals to react appropriately to each other they need to know about each others' gender, social status, and the state they are in (such as whether they are hungry, distressed, fearful, or aggressive). This project examines what brown capuchin monkeys (Cebus apella) know about their group mates. It asks them to indicate, on the basis of portraits projected on a computer screen, which belongs to their group. It asks them to rate calls as either aversive or attractive, dependent on the identity of the caller (for example, does a female find the distress calls of her own offspring more aversive than such calls by unrelated juveniles?), and assessed whether monkeys share food with others based on what they know about their hunger state to see if they take the needs of others into account. Available are 30 capuchin monkeys, kept in indoor/outdoor enclosures, trained for temporary separation for experiments. The proposed study illuminates basic social cognition that is often taken for granted.