Americans tend to smile more often than people in other countries. Olga Khazan digs into a couple scientific findings why — it turns out, American smiles signal excitement, confidence, and also have to do with a long history of immigration.

For more, read Olga's article, "Why Do Americans Smile So Much?"
https://www.theatlantic.com/science/a...

Authors: Olga Khazan, Jeremy Raff, Alice Roth, Leah Varjacques

Additional Sources:

Invisibilia: Changing Social Norms Could Save Your Life
http://www.npr.org/2016/06/17/4823391...

NYTimes: WalMart Finds That Its Formula Doesn’t Fit Every Culture
http://www.nytimes.com/2006/08/02/bus...

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