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MrPlow [soylentnews.org] writes:

Submitted via IRC for takyon

Stanford psychologist Jeanne Tsai found that the more a particular country's culture values excitement, the more its political leaders show enthusiastic smiles. On the other hand, when the specific culture emphasizes calm, those leaders show more reserved smiles.

Source: http://news.stanford.edu/news/2016/february/smiles-jeanne-tsai-021516.html [stanford.edu]

Original Submission