First Author:   Laetitia Placido Greg-Hec, HEC Paris School of Management & CNRS placido@greg-hec.com   1, rue de la Libération Jouy-en-Josas, F-78501, France       Second Author: Olivier L'Haridon Greg-Hec, HEC Paris School of Management & University Paris Sorbonne lharidon@greg-hec.com   1, rue de la Libération Jouy-en-Josas, F-78501, France