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Baragli, P.; Paoletti, E.; Vitale, V.; Sighieri, C. |
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Title |
Looking in the correct location for a hidden object: brief note about the memory of donkeys (Equus asinus) |
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Journal Article |
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Year |
2011 |
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Ethology Ecology & Evolution |
Abbreviated Journal |
Ethology Ecology & Evolution |
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23 |
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2 |
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187-192 |
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Abstract |
In recent years, considerable literature has been published on cognition in horses; however, much less is known about the cognitive abilities of domestic donkey (Equus asinus). This study aimed to expand our knowledge of donkey cognition by assessing their short-term memory capacity. We employed a detour problem combined with the classic delayed-response task, which has been extensively used to compare working memory duration in a variety of different species. A two-point choice apparatus was used to investigate location recall and search behaviour for a food target, after a short delay following its disappearance. Four donkeys completed the task with a 10 sec delay, while four others were tested with a 30 sec delay. Overall, each group performed above chance level on the test, showing that subjects had successfully encoded, maintained, and retrieved the existence and location of the target despite the loss of visual contact. |
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Taylor & Francis |
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0394-9370 |
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doi: 10.1080/03949370.2011.554885 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6177 |
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Author |
Baragli, P.; Vitale, V.; Paoletti, E.; Mengoli, M.; Sighieri, C. |
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Title |
Encoding the Object Position for Assessment of Short Term Spatial Memory in Horses (Equus caballus) |
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Journal Article |
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Year |
2011 |
Publication |
International Journal of Comparative Psychology |
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Volume |
24 |
Issue |
3 |
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Abstract |
In this study, the detour problem was combined with the classic delayed-response task to investigate equine short-term spatial memory. Test subjects were eight female horses, divided into two groups (A and B) of four subjects each. The motivating object was made to move and disappear behind one oftwo identical obstacles in a two-point-choice apparatus. After a 10 s (Group A) or 30 s (Group B) delay the animal was released to seek the object. Both groups made more correct (14.8 ± 1.3 forGroup A and 13.5 ± 3.1 for Group B, mean ± SD) than incorrect choices (5.3 ± 1.3 for Group A and6.5 ± 3.1 for Group B, mean ± SD) and the performance of each group was significantly above chance level (z = 4.14, p = 0.000, for Group A and z = 3.02, p = 0.002, for Group B). Therefore, tested animals were able to recover the object by approaching the correct obstacle after 10 s or 30 s delays, showing that they had encoded and recovered from memory the existence of the target object and its location. |
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2168-3344 |
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Equine Behaviour @ team @ |
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6178 |
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