Affiliation: | 1. Heejin Yang is a Ph.D. candidate at the College of Economics, Sungkyunkwan University, Seoul, Korea;2. Hyung‐Suk Choi is an associate professor at Ewha School of Business, Ewha Womans University, Seoul, Korea;3. Doojin Ryu is a tenured professor at the College of Economics, Sungkyunkwan University, Seoul, Korea |