The 17 different ways your face conveys happiness: Humans have more universal ways of expressing happiness than any other emotion, study finds - Science Daily

1. The 17 different ways your face conveys happiness: Humans have more universal ways of expressing happiness than any other emotion, study finds  Science Daily
2. Humans have SEVENTEEN different facial expressions to convey happiness: more than any other emotion  Daily Mail
3. The 17 different ways your face conveys happiness  Medical Xpress
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