However, only one of these is a “genuine” or Duchenne smile. Discovered by French anatomist Duchenne de Boulogne in 1862, the key difference between this “real” happy smile and a “fake ...

In the psych racket we call the real-deal grin a Duchenne smile, named for 19th-century French anatomist Guillaume Duchenne. He's proof that medicine used to be even weirder: Dude liked to ...

Here's Why Smiling with your eyes — commonly referred to as the Duchenne smile after 19th-century scientist Guillaume Duchenne — is considered the most authentic type of smile associated with ...