I am a Senior Researcher in the Office of the Chief Economist at Microsoft.

I am also an Assistant Professor in the Department of Economics at Vanderbilt University, but I am currently on leave.

I work primarily on Econometrics. My research interests span:

  • Causal inference;
  • Semi- and non-parametric methods;
  • Specification testing.


Recent Updates:


Jonathan Roth and I have been working on a paper that characterizes when DiD estimators that rely on a parallel-trends assumption are insensitive/robust to functional form restrictions. Link to our paper is here. Let us know what you think!

Since I routinely get asked about/whether the problems associated with event-study specifications based on TWFE linear regression models are "real", Brant and I wrote this post using a simple simulated DGP to show how much these specifications can be unreliable. Check it out!

My paper with Brantly Callaway, "Difference-in-Differences with Multiple Time Periods" has been accepted at the Journal of Econometrics. We have also updated our did R package. We have a lot over there, including DiD introductions and examples of how to use our tools. Check it out!