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Scheider, L., Waller, B.M. 
ORCID: 0000-0001-6303-7458, Oña, L., Burrows, A.M. and Liebal, K.,
2016.
Social use of facial expressions in hylobatids.
PLoS ONE, 11 (3): e0151733.
ISSN 1932-6203
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Abstract
Non-human primates use various communicative means in interactions with others. While primate gestures are commonly considered to be intentionally and flexibly used signals, facial expressions are often referred to as inflexible, automatic expressions of affective internal states. To explore whether and how non-human primates use facial expressions in specific communicative interactions, we studied five species of small apes (gibbons) by employing a newly established Facial Action Coding System for hylobatid species (GibbonFACS). We found that, despite individuals often being in close proximity to each other, in social (as opposed to non-social contexts) the duration of facial expressions was significantly longer when gibbons were facing another individual compared to non-facing situations. Social contexts included grooming, agonistic interactions and play, whereas non-social contexts included resting and self-grooming. Additionally, gibbons used facial expressions while facing another individual more often in social contexts than non-social contexts where facial expressions were produced regardless of the attentional state of the partner. Also, facial expressions were more likely ‘responded to’ by the partner’s facial expressions when facing another individual than non-facing. Taken together, our results indicate that gibbons use their facial expressions differentially depending on the social context and are able to use them in a directed way in communicative interactions with other conspecifics.
| Item Type: | Journal article | ||||||
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| Publication Title: | PLoS ONE | ||||||
| Creators: | Scheider, L., Waller, B.M., Oña, L., Burrows, A.M. and Liebal, K. | ||||||
| Publisher: | Public Library of Science (PLoS) | ||||||
| Date: | 15 March 2016 | ||||||
| Volume: | 11 | ||||||
| Number: | 3 | ||||||
| ISSN: | 1932-6203 | ||||||
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| Rights: | Copyright: © 2016 Scheider et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | ||||||
| Divisions: | Schools > School of Social Sciences | ||||||
| Record created by: | Linda Sullivan | ||||||
| Date Added: | 03 Nov 2020 09:39 | ||||||
| Last Modified: | 31 May 2021 15:14 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/41466 |
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