Dynamic cultural representations of facial expressions of emotion are not universal

Jack, R. , Garrod, O., Yu, H., Caldara, R. and Schyns, P. (2011) Dynamic cultural representations of facial expressions of emotion are not universal. Journal of Vision, 11(11), p. 563. (doi: 10.1167/11.11.563)

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Six ‘universal’ facial expressions – ‘Happy,’ ‘Surprise,’ ‘Fear,’ ‘Disgust,’ ‘Anger,’ and ‘Sadness’ – are defined by specific, static patterns of facial muscle activation (Facial Action Coding System codes, FACS). However, systematic differences in facial expression recognition between Western Caucasians (WC) and East Asians (EA) question the notion of universality, raising a new question: How do different cultures represent facial expressions? Here, we derived culture-specific models of facial expressions using state-of-the-art 4D imaging (dynamics of 3D face shape and texture) combined with reverse correlation techniques. Specifically, we modelled 41 core Action Units (AUs, groups of facial muscles) from certified FACS coders and parameterized each using 6 temporal parameters (peak amplitude; peak latency; onset latency; offset latency; acceleration; deceleration). The 41 AUs and their parameters formed the basis of a pseudo-random generative model of expressive signals. On each trial, we pseudo-randomly selected parametric values for each AU, producing an expressive facial animation (see Figure S1 in Supplementary Material). Ten WC and 10 EA na & ıuml;ve observers each categorized 9,600 such animations according to the 6 emotion categories listed above and rated the perceived intensity of the emotion (see Figure S1 in Supplementary Material). We then reverse correlated the dynamic properties of the AUs with the emotion categories they elicited, producing “dynamic classification models” (i.e., expected 4D face information) per emotion and observer. Analyses of the models reveal clear cultural contrasts in (a) the presence/absence of specific AUs predicting the reported EA miscategorizations and (b) radically different temporal dynamics of emotional expression whereby EA observers expect “smoother” emotional displays with lower acceleration and amplitude (see link in Supplementary Material for example videos). For the first time, we reveal cultural diversity in the dynamic signals representing each basic emotion, demonstrating that the complexities of emotion cannot adequately be reduced to a single set of static ‘universal’ signals.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Garrod, Dr Oliver and Caldara, Professor Roberto and Yu, Mr Hui and Schyns, Professor Philippe and Jack, Professor Rachael
Authors: Jack, R., Garrod, O., Yu, H., Caldara, R., and Schyns, P.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
College of Science and Engineering > School of Psychology
Journal Name:Journal of Vision
Publisher:Association for Research in Vision and Ophthalmology
ISSN (Online):1534-7362

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