Paukner Annika, Huntsberry Mary E, Suomi Stephen J
Laboratory of Comparative Ethology, National Institute of Child Health and Human Development, MD 20837, USA.
J Comp Psychol. 2009 Feb;123(1):26-33. doi: 10.1037/a0013128.
Foraging choices in tufted capuchins monkeys are guided by perceptual, cognitive, and motivational factors, but little is known about how these factors might interact. The present study investigates how different types of sensory information affect capuchins' ability to locate hidden food. In two experiments, capuchins were presented with two cups, one baited and one empty. Monkeys were given visual, acoustic, or acoustic-visual information related to the baited cup, the empty cup, or both baited and empty cup. Results show that capuchins spontaneously used visual information to locate food, and that information indicating presence and absence of food led to higher success rates than information indicating only absence of food. In contrast, acoustic information did not lead to success rates above chance levels and failed to enhance performance in combination with visual information. Capuchins spontaneously avoided a visually empty cup, but they did not appear to associate sounds with either the presence or absence of food. Being able to locate food items with the aid of acoustic cues might be a learned process that requires interactive experiences with the task's contingencies.
簇绒卷尾猴的觅食选择受感知、认知和动机因素的引导，但对于这些因素如何相互作用却知之甚少。本研究调查了不同类型的感官信息如何影响卷尾猴定位隐藏食物的能力。在两项实验中，给卷尾猴呈现两个杯子，一个装有食物，一个为空。猴子被给予与装有食物的杯子、空杯子或装有食物和空杯子两者相关的视觉、听觉或视听信息。结果表明，卷尾猴会自发地利用视觉信息来定位食物，并且表明食物存在与否的信息比仅表明食物不存在的信息带来更高的成功率。相比之下，听觉信息并未带来高于随机水平的成功率，并且与视觉信息结合时也未能提高表现。卷尾猴会自发地避开视觉上为空的杯子，但它们似乎并未将声音与食物的存在或不存在联系起来。借助听觉线索定位食物可能是一个需要与任务的偶然性进行互动体验的学习过程。
