Conniff, Richard
August 2007
Smithsonian;Aug2007, Vol. 38 Issue 5, p46
The article discusses efforts by scientists to understand the smile, which is one of the most complex human expressions. Most researchers believe that facial expressions are innate and are not learned by watching the people around them, a belief that is supported by the fact that people who are blind from birth share many facial expressions with sighted people. The author examines the view of smiling by scientists around the world, who have shown that happier people smile more often and the smile got its start in fear.


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