Joachim Weimann is Full Professor of Economic Policy at Otto von Geuricke University Magdeburg, and head of MaXlLab, the Magdeburg Laboratory for Experimental Economics. Andreas Knabe is Full Professor and Chair of Public Economics at Otto von Geuricke University Magdeburg. Ronnie Schoeb is Full Professor of International Public Economies at the School of Business and Economics, Freie Universitat, Berlin.