Paul Ekman Coined the Term Duchenne Smile in Order to Differentiate

Paul Ekman coined the term Duchenne smile in order to differentiate true, enjoyment smiles from fake, polite smiles. What is present in the Duchenne smile that is NOT present in polite smiles?

A) activity in the zygomatic cheek muscles, which pull the lips upward
B) verbal expressions of happiness
C) duration longer than ten seconds
D) activity in the orbicularis eye muscle

Correct Answer:

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