The Trade-Off between Flexibility and Robustness in Instrumental Variables Analysis

Ben Deaner

American Economic Review, 2025, vol. 115, issue 11, 3975-98

Abstract: In additive instrumental variables models, the robustness to some failure of instrumental validity or additive separability depends on the strength of a priori restrictions on the structural relationship between outcomes and treatments. I provide theoretical analysis of the problem, discuss the implications for empirical practice, and demonstrate with a numerical study calibrated on real-world data.

JEL-codes: C26 G51 H24 J13 (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1257/aer.20231765

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