Rychlowska, M., Jack, R. E. , Garrod, O. G.B., Schyns, P. G. , Martin, J. D. and Niedenthal, P. M. (2017) Functional smiles: tools for love, sympathy, and war. Psychological Science, 28(9), pp. 1259-1270. (doi: 10.1177/0956797617706082) (PMID:28741981)
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Abstract
A smile is the most frequent facial expression, but not all smiles are equal. A social-functional account holds that smiles of reward, affiliation, and dominance serve basic social functions, including rewarding behavior, bonding socially, and negotiating hierarchy. Here, we characterize the facial-expression patterns associated with these three types of smiles. Specifically, we modeled the facial expressions using a data-driven approach and showed that reward smiles are symmetrical and accompanied by eyebrow raising, affiliative smiles involve lip pressing, and dominance smiles are asymmetrical and contain nose wrinkling and upper-lip raising. A Bayesian-classifier analysis and a detection task revealed that the three smile types are highly distinct. Finally, social judgments made by a separate participant group showed that the different smile types convey different social messages. Our results provide the first detailed description of the physical form and social messages conveyed by these three types of functional smiles and document the versatility of these facial expressions.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Jack, Professor Rachael and Garrod, Dr Oliver and Schyns, Professor Philippe |
Authors: | Rychlowska, M., Jack, R. E., Garrod, O. G.B., Schyns, P. G., Martin, J. D., and Niedenthal, P. M. |
College/School: | College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience |
Journal Name: | Psychological Science |
Publisher: | Association for Psychological Science |
ISSN: | 0956-7976 |
ISSN (Online): | 1467-9280 |
Published Online: | 25 July 2017 |
Copyright Holders: | Copyright © 2017 The Authors |
First Published: | First published in Psychological Science 28(9): 1259-1270 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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