1st QUESTION: What scientific evidence proves that smiling is an innate element?
2nd QUESTION: What is the main characteristic that distinguishes a genuine or "Duchenne" smile?
3rd QUESTION: Which specific muscle contracts in a genuine smile creating crow's feet?
QUESTION 4: What is the easiest way to detect a fake smile?
QUESTION 5: What does a tight-lipped smile with no teeth showing usually indicate?
QUESTION 6: What visual characteristic defines a contemptuous smile?
7TH QUESTION: What message does a person communicate by wearing a contemptuous smile?
QUESTION 8: What type of smile is a universal biological response to positive emotions?
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