Boundary estimation in the regression-discontinuity design: Evidence for a merit- and need-based financial aid program
断点回归的边界估计:基于成绩与经济需要的助学项目证据
In the conventional regression-discontinuity (RD) design, the probability that units receive a treatment changes discontinuously as a function of one covariate exceeding a threshold or cutoff point. This paper studies an extended RD design where assignment rules simultaneously involve two or more continuous covariates. We show that assignment rules with more than one variable allow the estimation of a more comprehensive set of treatment effects, relaxing in a research-driven…