How can randomised controlled trials help improve the design of the common agricultural policy?
通过四个政策设计问题（助推、协调失败、公平效率权衡、合同设计），举例说明随机对照试验如何为改进共同农业政策提供严谨证据。
Abstract We illustrate how randomised controlled trials (RCTs) could be used to evaluate the impact of alternative designs of the common agricultural policy (CAP). We select four policy-design issues which relate to different components of the CAP and raise a wide range of economic questions: nudges, coordination failures, equity-efficiency trade-offs, contract design. Based on examples from agricultural and social policies in developing and developed countries, we show that RCTs have provided useful rigorous evidence on similar design issues, suggesting that they could also be leveraged to help improve components of the CAP.