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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: A Cross-species Comparison of Facial Morphology and Movement in Humans and Chimpanzees Using the Facial Action Coding System (FACS)
Author(s): Vick, Sarah-Jane
Waller, Bridget M
Parr, Lisa A
Smith Pasqualini, Marcia C
Bard, Kim A
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Keywords: chimpanzee
facial expression
Issue Date: 2007
Date Deposited: 18-Nov-2008
Citation: Vick S, Waller BM, Parr LA, Smith Pasqualini MC & Bard KA (2007) A Cross-species Comparison of Facial Morphology and Movement in Humans and Chimpanzees Using the Facial Action Coding System (FACS). Journal of Nonverbal Behavior, 31 (1), pp. 1-20.
Abstract: A comparative perspective has remained central to the study of human facial expressions since Darwin’s (1872) insightful observations on the presence and significance of cross-species continuities and species-unique phenomena. However, cross-species comparisons are often difficult to draw due to methodological limitations. We report the application of a common methodology, the Facial Action Coding System (FACS) to examine facial movement across two species of hominoids, namely humans and chimpanzees. The Facial Action Coding System (FACS: Ekman & Friesen, 1978) has been employed to identify the repertoire of human facial movements. We demonstrate that FACS can be applied to other species, but highlight that any modifications must be based on both underlying anatomy and detailed observational analysis of movements. Here we describe the ChimpFACS and use it to compare the repertoire of facial movement in chimpanzees and humans. While the underlying mimetic musculature shows minimal differences, important differences in facial morphology impact upon the identification and detection of related surface appearance changes across these two species.
DOI Link: 10.1007/s10919-006-0017-z
Rights: Published by Springer Verlag. The original publication is available at

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