Duchenne smiles
A)are authentic smiles.
B)make crow's-feet or crinkles in the outside corners of the eyes.
C)signal genuine happiness and enjoyment.
D)are characterized by all of these.

Question

Quizplus · Accepted Answer

Duchenne smiles are characterized by both the crinkles in the outside corners of the eyes and the signaling of genuine happiness and enjoyment, making them authentic smiles. Therefore, the correct answer is D, all of the above.

Duchenne Smiles