Stratou, Giota, Van Der Schalk, Jacob ![]() |
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Abstract
Many automatic facial expression recognizers now output individual facial action units (AUs), but several lines of evidence suggest that it is the combination of AUs that is psychologically meaningful: e.g., (a) constraints arising from facial morphology, (b) prior published evidence, (c) claims arising from basic emotion theory. We performed factor analysis on a large data set and recovered factors that have been discussed in the literature as psychologically meaningful. Further we show that some of these factors have external validity in that they predict participant behaviors in an iterated prisoner’s dilemma task and in fact with more precision than the individual AUs. These results both reinforce the validity of automatic recognition (as these factors would be expected from accurate AU detection) and suggest the benefits of using such factors for understanding these facial expressions as social signals.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Published Online |
Status: | Published |
Schools: | Psychology |
Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
Publisher: | IEEE Xplore |
ISBN: | 978-1-5386-0564-6 |
ISSN: | 2156-8111 |
Date of First Compliant Deposit: | 7 September 2017 |
Date of Acceptance: | 14 July 2017 |
Last Modified: | 22 Oct 2022 13:42 |
URI: | https://orca.cardiff.ac.uk/id/eprint/104417 |
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