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Author  |
Doré,F.Y.; Fiset,S.; Goulet,S.; Dumans,M.-C.; Gagnon,S. | ||||
| Title | Search behavior in cats and dogs Interspecific differences in working memory and spatial cognition | Type | Journal Article | ||
| Year | 1996 | Publication | Animal Learning & Behavior | Abbreviated Journal | Anim Learn. & Behav. |
| Volume | 24 | Issue | 2 | Pages | 142-149 |
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| Abstract | Cats and dogs search behavior was compared in different problems where an object was visibly moved behind a screen that was then visibly moved to a new position. In Experiments 1 (cats) and 2 (dogs), one group was tested with identical screens and the other group was tested with dissimilar screens. Results showed that in both species, search behavior was based on processing of spatial information rather than on recognition of the visual features of the target screen. Cats and dogs were unable to find the object by inferring its invisible movement. They reached a high level of success only if there was direct perceptual evidence that the object could not be at its initial position. When the position change was indicated by an indirect cue, cats searched more at the object`s initial than final position, whereas dogs searched equally at both positions. Interspecific similarities and differences are interpreted in terms of the requirements for resetting working memory. |
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 537 | ||
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| Author |
SYLVAIN GAGNON,FRANCOISY. DORE | ||||
| Title | Search behavior of dogs (Canis familiaris) in invisible displacement problems | Type | Journal Article | ||
| Year | 1993 | Publication | Animal Learning & Behavior | Abbreviated Journal | Anim Learn. & Behav. |
| Volume | 21 | Issue | 3 | Pages | 246-254 |
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| Abstract | Gagnon and Dor (1992) showed that domestic dogs are able to solve a Piagetian object permanence task called the invisible displacement problem. A toy is hidden in a container which is moved behind a screen where the toy is removed and left. Dogs make more errors in these problems than they do in visible displacement tests, in which the object is hidden directly behind the target screen. In Experiment 1, we examinedcomponents ofthe standard procedure of invisible displacements that may make encoding or retention of the hiding location more difficult than it is in visible displacements. In Experiment 2, we compared dogs performances in visible and invisible displacement problems when delays of 0, 10, and 20 sec were introduced between the objects final disappearance and the subjects release. The results revealed that dogs poorer performance in invisible displacement tests is related to the complex sequence of events that have to be encoded or remembered as well as to a difficulty in representing the position change that is signaled, but not directly perceived. |
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 538 | ||
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