The authors gratefully acknowledge the generous partnership with the corporation that provided field access, in addition to the financial support by the Research Council Norway (325398) and the University of Stavanger. The authors thank Marie Claire Villeval (department editor), an anonymous associate editor, and two anonymous referees for their detailed comments and suggestions. The authors also thank Eric Bettinger, Pol Campos-Mercade, Robert Dur, Ola Kvaløy, and Christopher T. Stanton, participants at the AFE Chicago, the COPE conference, the Field Days in Cologne, and the Stavanger Workshop in Experimental Economics and Finance for useful comments and discussions.
