Assessing Heterogeneity of Treatment Effects

Tetsuya Kaji and Jianfei Cao

Papers from arXiv.org

Abstract: Heterogeneous treatment effects are of major interest in economics. For example, a poverty reduction measure would be best evaluated by its effects on those who would be poor in the absence of the treatment, or by the share among the poor who would increase their earnings because of the treatment. While these quantities are not identified, we derive nonparametrically sharp bounds using only the marginal distributions of the control and treated outcomes. Applications to microfinance and welfare reform demonstrate their utility even when the average treatment effects are not significant and when economic theory makes opposite predictions between heterogeneous individuals.

Date: 2023-06, Revised 2025-08
New Economics Papers: this item is included in nep-ecm
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