1Laboratoire Cognition, Santé, Socialisation, C2S EA 6291, Université de Reims Champagne-Ardenne,
Reims, France
2Institut Universitaire de France, Paris, France
Copyright © 2013 Chrystel Besche-Richard et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.