… Effects De Janvry, A., Finan, F., and Sadoulet, E., 2012. Local Electoral Incentives and Decentralized Program … exerting more effort. Padro i Miquel, G., Qian,N., Yao,Y. 2012. Social Fragmentation, Public Goods and Elections: … Validity Chassang, S., i Miquel,G., and Snowberg, E., 2012 . Selective Trials: A Principal-Agent Approach to …