Pro-social behavior, Heterogeneity and Incentives: Experimental evidence from the local commons in ColombiaJul 1, 2015·Sandra Polania-Reyes· 0 min read Cite URLLast updated on Jul 1, 2015 ← Work pays: different benefits of a workfare program in Colombia Jul 1, 2017Helping the helpers : altruism as a rational choice of donors to a students voluntary organization Nov 1, 2009 →