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Bibliographic Details
Main Author: Okamoto, Yuta
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2509.26380
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Table of Contents:
  • The external validity of regression discontinuity designs is crucial for informing policy but is rarely examined in applied work. To advance empirical practice, we propose a joint inference procedure for the treatment effect and its local external validity, captured by the treatment effect derivative (TED), within a robust bias correction framework. We further introduce a locally linear treatment effects assumption, which extends the scope of the TED and enables identification and the construction of a uniform confidence band for extrapolated effects. These methods apply to most empirical studies. Empirical illustrations demonstrate their practical usefulness.