I am an Associate Professor of Economics at Emory University.

My research interests lie in Applied Econometrics, particularly in Causal Inference. In the last few years, I have focused on better understanding and improving Difference-in-Differences and related methods.

I am currently an Associate Editor for the Journal of Econometrics and for the Journal of Business & Economic Statistics.

Recent Updates:

- I am super excited to release my new paper with Xiaohong Chen and Haitian Xie, "Efficient Difference-in-Differences and Event Study Estimators." This paper addresses some interesting open problems in the DiD literature, including how to effectively explore data from different pre-treatment periods and comparison groups. We also have some nice visualization tools that can be used to better understand how the Efficient DiD estimator works.

- Please check "Better Understanding Triple Differences Estimators" , joint with my Ph.D. student Marcelo Ortiz-Villavicencio. This paper presents some interesting and surprising results, emphasizing that we should not view DDD designs as simply the difference of two DiDs. Cool stuff, if you ask me!

- If you are looking for guidance on DiDs, we have good news for you! Andrew Baker, Brant Callaway, Scott Cunningham, Andrew Goodman-Bacon, and I wrote "Difference-in-Differences Designs: A Practitioner's Guide." This is now forthcoming in the Journal of Economic Literature.