Identification with sharp difference-in-discontinuities and discontinuity-in-differences
Abstract
This note revisits identification for difference-in-discontinuities (DIDISC) and discontinuity-indifferences (DISCID) when treatment assignment is sharp. I show that both estimands equal the average treatment effect at the cutoff (ATC) under two assumptions. The first assumption is the continuous trends assumption. The second assumption is no anticipation at the cutoff.
Fields of Study & Subjects
Control Systems and Identification
Publication details
- Journal / source
- Applied Economics Letters
- Publisher
- Informa UK Limited
- Pages
- 1–6
- Publication date
- 20 August 2026
- Language
- EN