Sutter, Matthias Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://pubsonline.informs.org/doi/abs/10.1287/mnsc.1120.1516 (Any fulltext)
Kocher, M., Lenz, M. V., & Sutter, M. (2012). Psychological pressure in competitive environments: New evidence from randomized natural experiments. Management Science, 58(5), 1585-1591.