Kosfeld, Michael; Neckermann, Susanne - Institute for the Study of Labor (IZA) - 2010
an international non-governmental organization we hired students to work on a database project. Students in the award … treatment were offered a congratulatory card from the organization honoring the best performance. The award was purely symbolic … award treatment outperform students in the control treatment by about 12 percent on average. Our results provide strong …