Informal Posts on Coding / Econometrics / Etc.Permalink

• Interpreting regressions under unconfoundedness How to interpret $\alpha$ in the regression $Y_i = \alpha D_i + X_i’\beta + e_i$ under unconfoundedness and if there is treatment effect heterogeneity.

• Proof of de Chaisemartin and d’Haultfoeuille (2020) under staggered treatment adoption Explains the TWFE regression weighting scheme in DID applications in a simplified setting with staggered treatment adoption.

• Base periods in event studies Comparing varying and universal base periods in event studies

• Is our code slow…? A short post on the computation speed of the did R package.

Short Research SummariesPermalink

• Short summary of my DID chapter in the Handbook of Labor, Human Resources and Population Economics.

• Five minute summary of Difference in differences with time-varying covariates

• Five minute summary of Difference-in-Differences with a Continuous Treatment

• Five minute summary of Policy Evaluation during a Pandemic