Experimentation at Scale
论证了在发展中国家进行大规模随机实验的价值，通过扩大抽样框、处理单元数量和随机化单元规模，可以缓解对实验项目评估的批评，并提供了大规模实验可行且有价值的实例。
This paper makes the case for greater use of randomized experiments “at scale.” We review various critiques of experimental program evaluation in developing countries, and discuss how experimenting at scale along three specific dimensions—the size of the sampling frame, the number of units treated, and the size of the unit of randomization— can help alleviate the concerns raised. We find that program-evaluation randomized controlled trials published over the last 15 years have typically been “small” in these senses, but also identify a number of examples—including from our own work— demonstrating that experimentation at much larger scales is both feasible and valuable.