| Facial expression categorization by chimpanzees using standardized stimuli. | |
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MedLine Citation:
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PMID: 18410196 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The ability to recognize and accurately interpret facial expressions are critical social cognition skills in primates, yet very few studies have examined how primates discriminate these social signals and which features are the most salient. Four experiments examined chimpanzee facial expression processing using a set of standardized, prototypical stimuli created using the new ChimpFACS coding system. First, chimpanzees were found to accurately discriminate between these expressions using a computerized matching-to-sample task, and recognition was impaired for all but one expression category when they were inverted. Third, a multidimensional scaling analysis examined the perceived dissimilarity among these facial expressions revealing 2 main dimensions, the degree of mouth closure and extent of lip-puckering and retraction. Finally, subjects were asked to match each facial expression category using only individual component features. For each expression category, at least 1 component movement was more salient or representative of that expression than the others. However, these were not necessarily the only movements implicated in subject's overall pattern of errors. Therefore, similar to humans, both configuration and component movements are important during chimpanzee facial expression processing. |
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Authors:
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Lisa A Parr; Bridget M Waller; Matthew Heintz |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Emotion (Washington, D.C.) Volume: 8 ISSN: 1528-3542 ISO Abbreviation: Emotion Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-04-15 Completed Date: 2008-08-22 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 101125678 Medline TA: Emotion Country: United States |
Other Details:
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Languages: eng Pagination: 216-31 Citation Subset: IM |
Copyright Information:
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(Copyright) 2008 APA. |
Affiliation:
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Division of Psychiatry and Behavioral Sciences, Emory University, USA. parr@rmy.emory.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Attention Discrimination Learning* Emotions* Facial Expression* Female Male Motion Perception Orientation Pan troglodytes / psychology* Pattern Recognition, Visual* Social Perception |
| Grant Support | |
ID/Acronym/Agency:
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R01 MH068791-03/MH/NIMH NIH HHS; R01-MH068791/MH/NIMH NIH HHS; RR-00165/RR/NCRR NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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