Spot The Fake Smile

Here is an interesting test: Can you spot fake versus genuine smiles? Apparently it's not easy. Take this test of looking at brief videos of 20 different people smiling, and choose which ones are fake, and which ones are genuine.

Apparently, however, I'm a bit ahead of the curve: I got 19 out of 20 correct. The sad part though? The one I got wrong was that I couldn't spot the Asian girl's fake smile. Oh dear.