List, John A.; Samek, Anya - 2015
evaluate the impact of small non-monetary incentives on the selection of milk in the school lunchroom. At baseline, only 16% of … children select white milk relative to 84% choosing chocolate milk. We find a significant effect of incentives, which increase … white milk selection by 2.5 times, to 40%. One concern with incentives is that they may decrease intrinsic motivation to eat …