Mechanism Experiments and Policy Evaluations
探讨如何通过随机对照实验识别政策问题中的行为机制，即使实验干预不完全对应现实政策，也能为政策制定提供有价值的信息。
Randomized controlled trials are increasingly used to evaluate policies. How can we make these experiments as useful as possible for policy purposes? We argue greater use should be made of experiments that identify the behavioral mechanisms that are central to clearly specified policy questions, what we call “mechanism experiments.” These types of experiments can be of great policy value even if the intervention that is tested (or its setting) does not correspond exactly to any realistic policy option.