Little is known about how peers influence the impact of incentives. We investigate two mechanisms by which these … effects can occur: through peers' actions and peers' incentives. In a field experiment on snack choice in the school lunchroom … (choice of grapes versus cookies), we randomize who receives incentives, the fraction of peers incentivized, and whether or …

schemes designed to encourage either participation or volume. Our results confirm the importance of incentives in that we find …

comparison group in China, we examine how both psychological and financial incentives, together with attitudes toward risk, may … rank-based financial incentives. Our results show that performance-ranking information had a significant motivational … effect on average performance for students, but not for that of workers. Adding financial incentives based on rank provided …