A new book reveals the secrets behind smiling.

Long before Tyra Banks coined the term smize (smile with your eyes), scientists were studying the meaning behind the upside-down frown. In her new book, Lip Service, Yale psychology professor Marianne LaFrance, PhD, delves into the latest research to shine a spotlight on smiling and explain why such a small muscle movement can have huge social consequences.

Test your smiling skills with this quiz:

• True or False? Babies smile in the womb. Click here for the answer.
• True or False? When members of the opposite sex smile at each other, it's usually flirtatious. Click here for the answer.
• True or False? People who smile more live longer. Click here for the answer.

Buy the book here.  

Smile like you mean it.

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