At What Level Should One Cluster Standard Errors in Paired and Small-Strata Experiments?
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In clustered paired experiments, randomization units, say villages, are matched into pairs, and one unit of each pair is randomly assigned to treatment. To estimate the treatment effect, researchers often regress their outcome on the treatment and pair fixed effects, clustering standard errors at
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美国国家经济研究局创建时间：
2020-08-01
