Linked from
The 9 pages that link to Facial feedback hypothesis, each with the reason it gives.
EmotionRelated: It links outward expression to the intensity or character of felt emotion.
Facial expressionRelated: It proposes that expression may affect emotion as well as communicate it.
AngerRelated: Facial expressions associated with anger may interact with how anger is experienced.
FrownRelated: It asks whether making a frown can affect feelings as well as express them.