Culture shapes how leaders smile, research shows. 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.

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Culture shapes how leaders smile, research shows. 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.