Waiting To Give: Stated and Revealed Preferences
研究献血者等待时间对满意度和实际返回行为的影响，发现等待时间比满意度更能预测未来献血行为，且等待时间增加会显著减少年献血量。
We estimate and compare the effect of increased time costs on consumer satisfaction and behavior. We are able to move beyond the existing literature, which focuses on satisfaction and intention, and estimate the effect of waiting time on return behavior. Further, we do so in a prosocial context and our measure of cost is the length of time a blood donor spends waiting. We find that relying on satisfaction data masks important time cost sensitivities; namely, it is not how the donor feels about the wait time that matters for return behavior, but rather the actual duration of the wait. Consistent with theory we develop, our results indicate that waiting has a significant longer-term social cost: we estimate that a 38% increase (equivalent to one standard deviation) in the average wait would result in a 10% decrease in donations per year. This paper was accepted by Uri Gneezy, behavioral economics.