Jeongkoo Yoon is a co-author of Order on the Edge of Chaos (2015). He is Professor in the School of Management at Ewha Womans University, South Korea. His research applies power and exchange theories to solve issues of contemporary organizations such as empowerment, leadership, and change. He coauthored the book Social Commitments in a Depersonalized World (2009) with Lawler and Thye. He also published two award-winning best seller books in Korea, Change Management for 100 Year Sustainable Companies (2010) and What Is Authenticity? (2012). He served as Editor of Korean Journal of Management and Chair of the Korean Association of Leadership. He is currently on the editorial board of British Journal of Management.