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Author |
Scheider, L.; Kaminski, J.; Call, J.; Tomasello, M. |
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Title |
Do domestic dogs interpret pointing as a command? |
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Journal Article |
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Year |
2013 |
Publication |
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Abbreviated Journal |
Animal Cognition |
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Volume |
16 |
Issue |
3 |
Pages |
361-372 |
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Keywords |
Communication; Domestic dog; Pointing; Comprehension; Imperative |
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Abstract |
Domestic dogs comprehend human gestural communication flexibly, particularly the pointing gesture. Here, we examine whether dogs interpret pointing informatively, that is, as simply providing information, or rather as a command, for example, ordering them to move to a particular location. In the first study a human pointed toward an empty cup. In one manipulation, the dog either knew or did not know that the designated cup was empty (and that the other cup actually contained the food). In another manipulation, the human (as authority) either did or did not remain in the room after pointing. Dogs ignored the human’s gesture if they had better information, irrespective of the authority’s presence. In the second study, we varied the level of authority of the person pointing. Sometimes this person was an adult, and sometimes a young child. Dogs followed children’s pointing just as frequently as they followed adults’ pointing (and ignored the dishonest pointing of both), suggesting that the level of authority did not affect their behavior. Taken together these studies suggest that dogs do not see pointing as an imperative command ordering them to a particular location. It is still not totally clear, however, if they interpret it as informative or in some other way. |
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Springer-Verlag |
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English |
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1435-9448 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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5666 |
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Author |
Abramson, J.Z.; Hernández-Lloreda, V.; Call, J.; Colmenares, F. |
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Title |
Experimental evidence for action imitation in killer whales (Orcinus orca) |
Type |
Journal Article |
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Year |
2013 |
Publication |
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Abbreviated Journal |
Animal Cognition |
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Volume |
16 |
Issue |
1 |
Pages |
11-22 |
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Keywords |
Social learning; Imitation; ‘Do-as-other-does’ test; Animal culture; Killer whales |
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Abstract |
Comparative experimental studies of imitative learning have focused mainly on primates and birds. However, cetaceans are promising candidates to display imitative learning as they have evolved in socioecological settings that have selected for large brains, complex sociality, and coordinated predatory tactics. Here we tested imitative learning in killer whales, Orcinus orca. We used a ‘do-as-other-does’ paradigm in which 3 subjects witnessed a conspecific demonstrator’s performance that included 15 familiar and 4 novel behaviours. The three subjects (1) learned the copy command signal ‘Do that’ very quickly, that is, 20 trials on average; (2) copied 100 % of the demonstrator’s familiar and novel actions; (3) achieved full matches in the first attempt for 8–13 familiar behaviours (out of 15) and for the 2 novel behaviours (out of 2) in one subject; and (4) took no longer than 8 trials to accurately copy any familiar behaviour, and no longer than 16 trials to copy any novel behaviour. This study provides experimental evidence for body imitation, including production imitation, in killer whales that is comparable to that observed in dolphins tested under similar conditions. These findings suggest that imitative learning may underpin some of the group-specific traditions reported in killer whales in the field. |
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Springer-Verlag |
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English |
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1435-9448 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5695 |
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