In his work on facial expression, Paul Ekman has found that:

Name: In his work on facial expression, Paul Ekman has found that:
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Paul Ekman's research suggests that a set of emotional expressions is universal to the human species. He identified seven universal emotions: happiness, sadness, anger, fear, disgust, contempt, and surprise. Although there may be cultural differences in the degree to which emotions are expressed or socially acceptable, the basic facial expressions appear to be universal.

In His Work on Facial Expression, Paul Ekman Has Found