The Symmetry of Emotional and Deliberate Facial Actions

ABSTRACT Asymmetries of the smiling facial movement were more frequent in deliberate imitations than spontaneous emotional expressions. When asymmetries did occur they were usually stronger on the left side of the face if the smile was deliberate. Asymmetrical emotional expressions, however, were ab...

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Bibliographic Details
Published in:Psychophysiology 1981-03, Vol.18 (2), p.101-106
Main Authors: Ekman, Paul, Hager, Joseph C., Friesen, Wallace V.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Child
Child, Preschool
Emotion
Emotions - physiology
Facial asymmetry
Facial Expression
Female
Functional Laterality - physiology
Hemispheric specialization
Humans
Male
Smiling
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Summary:ABSTRACT Asymmetries of the smiling facial movement were more frequent in deliberate imitations than spontaneous emotional expressions. When asymmetries did occur they were usually stronger on the left side of the face if the smile was deliberate. Asymmetrical emotional expressions, however, were about equally divided between those stronger on the left side of the face and those stronger on the right. Similar findings were obtained for the actions involved in negative emotions, but a small data base made these results tentative.
ISSN:0048-5772
1469-8986
DOI:10.1111/j.1469-8986.1981.tb02919.x