How good are you at reading people? Are you willing to put your senses to the test? Here's the challenge: The quiz is comprised of 20 questions. All you do rate the smile as real or fake. Ready? Let me know how you do! I got 17/20.
http://www.bbc.co.uk/science/h...s/smiles/index.shtml
http://www.bbc.co.uk/science/h...s/smiles/index.shtml