主 题：Putting Preference for Randomization to Work
钟松发，现为新加坡国立大学副教授，研究方向为行为经济学和实验经济学。曾在AER, Econometrica, Review of Economics and Statistics，Management Science，Economic Theory等国际核心期刊发表多篇文章。
Choice difficulty is commonly experienced in daily life, ranging from the insignificant decisions such as daily dress choice to the important ones such as family planning. Such difficulty leads to the behavioral biases of indecisiveness, inertia, and procrastination. Here we examine the usage of coin flipping to help resolve choice difficulty in the setting of donation. In a randomized field experiment, we find that coin flipping increases donation when choice is hard due to choosing between two equally attractive charities, but not when choice is relatively easy with matching fund provided to one of the two charities. A laboratory experiment replicates the observed patterns and further sheds light on the underlying psychological mechanism. More generally, our results point to the power of randomization as a nudge for difficult decisions.