Research using the facial action coding system to determine the specific facial expressions that typically accompany various emotions has determined that:

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Research using the facial action coding system has found that different parts of the face provide the best cues for recognizing different emotional expressions. For example, raising the eyebrows and creasing the forehead are important cues for recognizing surprise, while wrinkles around the eyes are important for recognizing fear. The shape of the mouth is also important for recognizing some emotional expressions, but it is not the most reliable cue for all emotions.

Research Using the Facial Action Coding System to Determine the Specific