Estimating Heterogeneous Impacts with Endogenous Participation and Non-Compliance

Orazio Attanasio, Lina Cardona-Sosa and Ziqian Liu

No 35872, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper considers the estimation of heterogeneous impacts within a Randomized Controlled Trial (RCT) in a situation where heterogeneous status is endogenous and is not fully observed in the control sample. We show how to use information in the treatment sample and a noisy signal on the heterogeneous status to estimate meaningful impacts under a minimal set of assumptions. We provide an application of this approach to a data set from Ghana, collected around a clustered RCT to evaluate the impacts of an early-years intervention, differentiating the impact between households that participate actively in the program from those who participate only passively, as recipients. We show that, for some outcomes, the properly estimated heterogeneous impacts differ substantially from those computed with a naive estimator.

JEL-codes: C10 C9 O15 (search for similar items in EconPapers)
Date: 2026-10
Note: DEV ED
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