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Structural Representations and Identification of Marginal Policy Effects

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  • Zhixin Wang
  • Yu Zhang
  • Zhengyu Zhang

Abstract

This article investigates the structural interpretation of the marginal policy effect (MPE) within nonseparable models. We demonstrate that, for a smooth functional of the outcome distribution, the MPE equals its functional derivative evaluated at the outcome‐conditioned weighted average structural derivative. This equivalence is definitional rather than identification‐based. Building on this theoretical result, we propose an alternative identification strategy for the MPE that complements existing methods.

Suggested Citation

  • Zhixin Wang & Yu Zhang & Zhengyu Zhang, 2026. "Structural Representations and Identification of Marginal Policy Effects," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 88(2), pages 367-374, April.
    • Handle: RePEc:bla:obuest:v:88:y:2026:i:2:p:367-374
    DOI: 10.1111/obes.70015
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