Potì Patrizia, Kanngiesser Patricia, Saporiti Martina, Amiconi Alessandra, Bläsing Bettina, Call Josep
Istituto di Scienze e Tecnologie della Cognizione, National Research Council, 00197 Roma, Italy.
J Exp Psychol Anim Behav Process. 2010 Jan;36(1):92-109. doi: 10.1037/a0015970.
In this study we show that bonobos and capuchin monkeys can learn to search in the middle of a landmark configuration in a small-scale space. Five bonobos (Pan paniscus) and 2 capuchin monkeys (Cebus apella) were tested in a series of experiments with the expansion test paradigm. The primates were trained to search in the middle of a 4- or 2-landmark configuration, and were then tested with the same configuration expanded. Neither species searched in the middle of the expanded 4-landmark configuration. When presented with a 2-landmark configuration and a constant or variable inter-landmark training distance, the subjects sometimes searched preferentially in the middle of the expanded configuration. We discuss 2 alternative explanations of the results: extracting a middle rule or averaging between different goal-landmark vectors. In any case, compared to adult humans, primates appear highly constrained in their abilities to search in the middle of a configuration of detached landmarks. We discuss some of the factors that may influence the primates' behavior in this task.
在本研究中，我们表明倭黑猩猩和卷尾猴能够学会在小规模空间中的地标配置中间进行搜索。五只倭黑猩猩（倭黑猩猩属）和两只卷尾猴（僧帽猴属）在一系列采用扩展测试范式的实验中接受了测试。这些灵长类动物被训练在由4个或2个地标组成的配置中间进行搜索，然后对相同配置进行扩展后进行测试。这两个物种都没有在扩展后的由4个地标组成的配置中间进行搜索。当面对由2个地标组成的配置以及地标间恒定或可变的训练距离时，受试动物有时会优先在扩展后的配置中间进行搜索。我们讨论了对结果的两种替代解释：提取中间规则或在不同目标地标向量之间求平均值。无论如何，与成年人类相比，灵长类动物在分离地标配置中间进行搜索的能力似乎受到很大限制。我们讨论了一些可能影响灵长类动物在此任务中行为的因素。
