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首页> 外文期刊>Animal Cognition >Dogs (Canis lupus familiaris) fail to show understanding of means-end connections in a string-pulling task
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Dogs (Canis lupus familiaris) fail to show understanding of means-end connections in a string-pulling task

机译：狗（犬天狼疮）无法表现出对拉线任务中的均值端连接的理解

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摘要

Domestic dogs (Canis lupus familiaris) were tested in four experiments for their understanding of means-end connections. In each of the experiments, the dogs attempted to retrieve a food treat that could be seen behind a barrier and which was connected, via string, to a within-reach wooden block. In the experiments, either one or two strings were present, but the treat was attached only to one string. Successful retrieval of the treat required the animals to pull the appropriate string (either by pawing or by grasping the wooden block in their jaws) until the treat emerged from under the barrier. The results showed that the dogs were successful if the treat was in a perpendicular line to the barrier, i.e. straight ahead, but not when the string was at an angle: in the latter condition, the typical response was a proximity error in that the dogs pawed or mouthed at a location closest in line to the treat. When two strings that crossed were present, the dogs tended to pull on the wrong string. The combined results from the experiments show that, although dogs can learn to pull on a string to obtain food, they do not spontaneously understand means-end connections involving strings.
机译：在四个实验中测试了家犬（犬天狼犬），以了解它们的均值端连接。在每个实验中，狗都试图取回一种食物食物，该食物食物可以在障碍物后面看到，并通过绳子连接到伸手可及的木块上。在实验中，存在一串或两串，但是零食仅附着于一串。要成功获得治疗，动物需要拉适当的绳子（通过用爪子抓或用木块抓住其颚部），直到治疗从障碍物下面出来。结果表明，如果治疗与障碍物垂直，​​即笔直向前，但当绳子成一定角度时，则不成功：在后一种情况下，典型反应是接近误差，因为狗用爪子或嘴巴放在最接近零食的位置。当出现两条交叉的弦时，狗倾向于拉错绳子。实验的综合结果表明，尽管狗可以学会拉弦来获取食物，但它们并不能自发地理解涉及弦的装置端连接。

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