In Choi is a Professor of Economics at Sogang University in Seoul, South Korea. His research focus has been on time series and panel data analysis, and he has published numerous articles in leading journals in economics and statistics. He is a Fellow of the Journal of Econometrics and has received the Plura Scripsit Award from Econometric Theory and the Chongram Award from the Korean Economic Association. He is currently an associate editor of the Journal of Business and Economic Statistics.