Emotions are expressed more intensely on the left side of the face

Science  27 Oct 1978:
Vol. 202, Issue 4366, pp. 434-436
DOI: 10.1126/science.705335


Pictures of human faces posing six distinct emotions (plus a neutral expression) and their mirror reversals were split down the midlines, and left-side and right-side composites were constructed. Subjects judged left-side composites as expressing emotions more intensely than right-side composites. The finding indicates hemispheric asymmetry in the control over emotional expression in the face.

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