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Author |
Defolie, C.; Malassis, R.; Serre, M.; Meunier, H. |
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Title |
Tufted capuchins (Cebus apella) adapt their communicative behaviour to human’s attentional states |
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Journal Article |
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Year |
2015 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
18 |
Issue |
3 |
Pages |
747-755 |
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Keywords |
Gestural communication; Intentionality; Non-human primates; Social cognition; Attention; Pointing |
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Abstract |
Animal communication has become a widely studied field of research, especially because of the associated debates on the origin of human language. Due to their phylogenetic proximity with humans, non-human primates represent a suitable model to investigate the precursors of language. This study focuses on the perception of the attentional states of others, an important prerequisite to intentional communication. We investigated whether capuchins (Cebus apella) produce a learnt pointing gesture towards a hidden and unreachable food reward as a function of the attentional status of the human experimenter. For that purpose, we tested five subjects that we first trained to indicate by a pointing gesture towards the human partner the position of a reward hidden by an assistant. Then, capuchins were tested in two experimental conditions randomly ordered. In the first condition—motivation trial—the experimenter was attentive to the subject gestures and rewarded him immediately when it pointed towards the baited cylinder. During the second condition—test trial—the experimenter adopted one of the following attention states and the subject was rewarded after 10 s has elapsed, regardless of the subject’s behaviour. Five attentional states were tested: (1) experimenter absent, (2) experimenter back to the monkey, (3) experimenter’s head away, (4) experimenter watching above the monkey, and (5) experimenter watching the monkey face. Our results reveal a variation in our subjects’ communicative behaviours with a discrimination of the different postural clues (body and head orientation) available in our experimental conditions. This study suggests that capuchins can flexibly use a communicative gesture to adapt to the attentional state of their partner and provides evidence that acquired communicative gestures of monkeys might be used intentionally. |
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Springer Berlin Heidelberg |
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English |
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1435-9448 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5886 |
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Author |
Knoll, H.; Horschak, R. |
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Title |
[Ecology of fermentation sarcinas Sarcina ventriculi and Sarcina maxima] |
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Journal Article |
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Year |
1973 |
Publication |
Zeitschrift fur Allgemeine Mikrobiologie |
Abbreviated Journal |
Z Allg Mikrobiol |
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Volume |
13 |
Issue |
5 |
Pages |
449-451 |
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Keywords |
Animals; Digestive System; Ecology; Haplorhini; Horses; Primates; *Sarcina |
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German |
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Original Title |
Zur Okologie der Garungssarcinen Sarcina ventriculi und Sarcina maxima |
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0044-2208 |
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PMID:4203565 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2717 |
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Author |
Köhler, W. |
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Title |
Intelligenzprüfungen an Menschenaffen |
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Book Whole |
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Year |
1921 |
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Animal intelligence , Chimpanzees , Primates , Psychology |
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Springer |
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Berlin |
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German |
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Equine Behaviour @ team @ |
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5752 |
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