1. Department of Economics, Yale University, New Haven, Connecticut, USA;,
2. Institute for Fiscal Studies, London, United Kingdom;
3. Abdul Latif Jameel Poverty Action Lab (J-PAL), Cambridge, Massachusetts, USA
4. National Bureau of Economic Research, Cambridge, Massachusetts, USA
5. FAIR–Centre for Experimental Research on Fairness, Inequality and Rationality, NHH Norwegian School of Economics, Bergen, Norway
6. Institute of Labor Economics (IZA), Bonn, Germany