RESEARCH

“A Simple Transformation Approach to Difference-in- Differences Estimation for Panel Data,”
(joint work  with Jeffrey M. Wooldridge), Journal of Business & Economic Statistics, forthcoming.  [1]

“Simple Approaches to Inference with Difference-in-Differences Estimators with Small Cross-Sectional Sample Sizes,”
(joint work with Jeffrey M. Wooldridge, under review) [2]

“Rolling Difference-in-Differences Estimation for Panel Data,”
(joint work with Elizabeth Kayoon Hur and Jeffrey M. Wooldridge)

• • • This manuscript introduces the user-written Stata command lwdid, which implements the methods developed in Papers [1] and [2]. 

    • 🚨**Updated `lwdid.ado` file now available -*! version 2.4 1 June 2026**

    • For further examples and details, please refer to the lwdid GitHub repository. 

“Rolling Difference-in-Differences with Reversible Treatment Paths and Moderating Effects,” submitted to a journal.

• “A New Approach to Evaluating Teacher Effectiveness: Impact of Work Environment on Productivity”
  (joint work with Jaehong Lim) 

• “Can Expanding School Options Benefit Students? Evidence from Michigan's Schools of Choice Program”
  (joint work with Tara Kilbride)
  
  

TEACHING

• ECON567B - Econometrics II (Ph.D.)       : Fall 25, Fall 26   

 [Lecture Notes Overview] [Stata Sessions]

• ECON567C - Econometrics III (Ph.D.)     : Spring 26, Spring 27

• ECON241 - Introduction to Macroeconomics (Undergraduate)  : Fall 26, Spring 27