1. Department of Economics, University of Konstanz, 78457 Konstanz, Germany;
2. Thurgau Institute of Economics, 8280 Kreuzlingen, Switzerland;
3. Wissenschaftszentrum Berlin für Sozialforschung, 10785 Berlin, Germany;
4. Faculty of Economics and Management, Technical University Berlin, 10623 Berlin, Germany;
5. CESifo, 81679 Munich, Germany;
6. Center for Behavioral Institutional Design, New York University Abu Dhabi, Abu Dhabi 129188, United Arab Emirates