论文标题
条件晚期模型的全球表示：可分离性结果
Global Representation of the Conditional LATE Model: A Separability Result
论文作者
论文摘要
本文研究条件晚期模型的潜在指数表示，使协变量在治疗选择中的作用显式。我们发现，如果单调性条件的方向在条件协变量的所有值中都是相同的，这在文献中通常是在文献中假定的，那么处理选择方程式必须满足仪器和协变量之间的可分离性条件。该全球表示结果建立了对协变量进入治疗选择方程的方式施加的可测试限制。后来，我们扩展了表示定理以结合多个有序的治疗水平。
This paper studies the latent index representation of the conditional LATE model, making explicit the role of covariates in treatment selection. We find that if the directions of the monotonicity condition are the same across all values of the conditioning covariate, which is often assumed in the literature, then the treatment choice equation has to satisfy a separability condition between the instrument and the covariate. This global representation result establishes testable restrictions imposed on the way covariates enter the treatment choice equation. We later extend the representation theorem to incorporate multiple ordered levels of treatment.
