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econ.EM2024
(Empirical) Bayes Approaches to Parallel Trends
Soonwoo Kwon, Jonathan Roth
We consider Bayes and Empirical Bayes (EB) approaches for dealing with violations of parallel trends. In the Bayes approach, the researcher specifies a prior over both the pre-trea…
econ.EM2024
Testing Mechanisms
Soonwoo Kwon, Jonathan Roth
Economists are often interested in the mechanisms by which a treatment affects an outcome. We develop tests for the "sharp null of full mediation" that a treatment affects an o…
econ.EM2024
Interpreting Event-Studies from Recent Difference-in-Differences Methods
Jonathan Roth
This note discusses the interpretation of event-study plots produced by recent difference-in-differences methods. I show that even when specialized to the case of non-staggered tre…