Spot the fake smile

I've always imagined myself quite good at this sort of thing but this is the first time I've ever tested it. I got 18/20 and the 2 I missed were 1st and 3rd, so it was before I really got into it, I think. By the 4th or 5th one my brain had remember what to look for and the rest were pretty easy.

This test is unfair, a lot of people have a really weird face and i can't even concentrate on the smile because i'm too busy going "WTF?"

Edit: Wow i still got 18/20, wasn't expecting that

It's quite obvious that the "genuine" people were made to laugh. The giggles give it away. It spoils much of the experiment.

From the site: "Although fake smiles often look very similar to genuine smiles, they are actually slightly different, because they are brought about by different muscles, which are controlled by different parts of the brain."

I got 12 right out of 20.

15/20. Always been told to watch the eyes.

15/20

19/20. I've done this before because Dr Eckman's work interests me. I always misinterpret Asian smiles, for some reason.

15/20