Wednesday, January 30, 2013
Researchers used chopsticks to manipulate participants faces into holding a neutral expression, a regular smile, or a Duchenne smile (smiles expressed through the mouth and eyes). In addition to the chopstick manipulation, some were told to smile. While holding the smiles (or not), they did various stress-inducing, multitasking activities.
Participants who voluntarily (in addition to, or only because of, the chopsticks) smiled better recovered from stressful activities than those with neutral expressions. Duchenne smile participants were the most relaxed.