deliberate Duchenne smile: perceptions and social outcomes.
The Duchenne smile, which is a smile that involves activation of the cheek raiser muscle that creates crow's feet around the eyes, has long been thought of as an infallible expression of genuine happiness (Ekman, Friesen, & Hager, 2002). Recent research has begun to show that the Duchen...
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| Online Access: | http://hdl.handle.net/2047/d20003145 |