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High-tech4 octobre 2015
© ReutersMachiavéliques
Les bébés, ces petits manipulateurs : voilà la vraie raison pour laquelle ils sourient à leurs parents
Les scientifiques américains de l'université de San Diego (Etats-Unis) ont voulu démontrer que le sourire des bébés est avant tout un acte social et relationnel destiné à faire sourire la mère en retour.
