Barry Z. Posner, PhD, is the Michael J. Accolti, S.J. Professor of Leadership at Santa Clara University and Chair of the Management and Entrepreneurship Department. He co-authored the award-winning bestseller The Leadership Challenge, listed among the Top 100 Business Books of All Time. Recognized as one of America's Top 50 leadership coaches and ranked among the Most Influential HR Thinkers globally by HR magazine, he received the Association for Talent Development's highest honor for Distinguished Contribution to Workplace Learning and Performance.

Lovett H. Weems is a senior consultant with the Lewis Center for Church Leadership and Distinguished Professor of Church Leadership at Wesley Theological Seminary in Washington, D.C. He founded the Lewis Center in 2003 after serving eighteen years as president of Saint Paul School of Theology. He has authored numerous books on leadership including Church Leadership: Vision, Team, Culture, Integrity.