We present statistical software to implement imputation estimator for difference-in-differences.

We estimate a government local fiscal multiplier from declines in procurement spending from the 2011 Budget Control Act.

I propose a non-parametric estimator for 'Rings' style estimators where an inner ring is treated and and outer ring serves as the control group.

I formalize Difference-in-Discontinuities identification in a spatial setting.

We propose an imputation-style estimator for a factor model allowing for selection into treatment based on non-parallel trends that is valid in short panels.

I formalize identification arguments for settings where treatment effects spillover space.

We estimate urban wage premiums from 1940 to present day.

We present an econometric framework for decomposing treatment effect into potential mechanisms.