“…Additionally, the social preferences considered by this literature are assumed to be a given (Narloch et al, 2012, Carpenter andSeki, 2010;Castillo and Saysel, 2005;Henrich, 2000), correlated with socio--economic and cultural characteristics, and vulnerable to being crowded out by exogenous mediators such as external regulations (Cardenas et al, 2000) and rewards (Vollan, 2008;Narloch et al, 2012). In contrast, the idea of moral self--licensing that has recently emerged argues that social preferences may be influenced by past behavior (Khan and Dhar, 2006;Mazar and Zhong, 2010;Clot et al 2016;see Blanken et al 2015 for a meta study and Mullen and Monin 2016 for a comprehensive review). 1 WEIRD effect : Western, Educated, Industrialized, Rich, Democratic 2 As a colleague has pointed out, on the one hand, it is possible that students in Madagascar are a relatively homogeneous population in comparison to populations in experimental labs in Europe or North America, which can be more ethnically diverse and exhibit more heterogeneous behaviour.…”