Smile

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A Nepali Newar woman smiling.

A smile is a facial expression formed by flexing the muscles near both ends of the mouth and by flexing muscles throughout the mouth. The smile can also be found around the eyes (see 'Duchenne Smiling' below). Among humans, it is an expression denoting pleasure, joy, happiness, or amusement, but can also be an involuntary expression of anxiety, in which case it is known as a grimace. Smiling is something that is understood by everyone despite culture, race, or religion; it is internationally known. Cross-cultural studies have shown that smiling is a means of communicating emotions throughout the world. But there are large differences between different cultures. A smile can also be spontaneous or artificial.

See also: Wikipedia, Commons

Related: Laughter, Emotion, Emoticon, Facial Action Coding System, Frown, Facial expression, Smiley, Social Psychology

Facial Emotion Expression Lab
Facial Emotion Expression Lab
feelab.ufp.pt/index.swf - Web

Spot The Fake Smile on BBC Science & Nature
Spot The Fake Smile on BBC Science & Nature
www.bbc.co.uk/science/humanbody/mind/surveys/smiles/ - Web

Expressions of Positive Emotion in Women's College...
Expressions of Positive Emotion in Women's College Yearbook Pictures and Their Relationship to Personality and Life Outcomes Across Adulthood.
findarticles.com/p/articles/mi_qn4155/is_20010212/ai_n13897093 - Web

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