Asymmetry in facial expression

H. Sackeim, R. Gur
1980 Science  
performance of requested facial movements. In describing how the photographs were taken, Friesen and I wrote that the photographic models "'were not told to feel an emotion, but rather given instructions such as lower your brow so that it looks like this, . . . or tighten your lower eyelid" (5, p. 170). Because our photographs were of requested facial movements, not of emotional poses, there must be even more caution in generalizing to spontaneous facial expression of emotion. The fact that
more » ... found no left-right differences in judgments of the happy photographs is important since, unknown to Sackeim et al., these were the only photographs of spontaneous emotional expression rather than deliberately performed facial actions. In making the happy photographs, we caught the models off guard during a spontaneously occurring happy moment in the photographic session. It might be argued that the reason no left-right differences were found in these happy pictures was not because they showed spontaneous rather than requested actions, but because positive emotions alone are not asymmetrical in appearance (6). However, Ekman, Hager, and Friesen (7) found that asym-
doi:10.1126/science.7403854 pmid:7403854 fatcat:myvj3hyjgfbqpp3q3ed2z27oei