Centorrino, Samuele; Djemaï, Elodie; Hopfensitz, Astrid; … - Institut d'Économie Industrielle (IDEI), Toulouse … - 2011
We test the hypothesis that "genuine" or "convincing" smiling is a costly signal that has evolved to induce cooperation in situations requiring mutual trust. Potential trustees in a trust game made video clips for viewing by potential trusters before the latter decided whether to send them...