First Author:   Sana Zouari University Côte d'Azur, INSTAR, France - University of Sfax, LED, Tunisia sana.zouari93@gmail.com         Second Author: Dhafer Saidane SKEMA Business School - University Côte d'Azur, France Dhafer.SAIDANE@skema.edu         Third Author: Foued Badr Gabsi Faculty of Economics and Management of Sfax, University of Sfax, Tunisia foued.gabsi@fsegs.rnu.tn