French
doctor, named Duchenne identified two different types of smiles. One is where
the entire major muscle contract. The other when the mouths turn up, but the
eyes don’t crinkle. It was believed it was not possible to fake a smile.
Later
researchers found the opposite; people can fake a smile. Why is it matter?
If they don’t think the smile is real, they are less likely to trust you.
Slide 2
People
can tell when a smile is real or fake more accurately with video.
People are able to determine a fake smile versus real
smile
