The facial feedback hypothesis states that facial expressions can influence emotions, as demonstrated in research where holding a pen in a smiling position intensified the subjective experience of emotion.
The facial feedback hypothesis suggests that our facial expressions can influence our emotions. Research by Fritz Strack and colleagues in 1988 demonstrated this by having participants hold a pen in their teeth (mimicking a smile) or lips (mimicking a frown) while rating the funniness of cartoons, showing that facial actions can intensify emotional experiences.
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