Barry Z. Posner

Barry Z. Posner is Accolti Professor of Leadership and former dean of the Leavey School of Business, Santa Clara University. An accomplished scholar, he also provides leadership workshops and seminars worldwide. Posner and James M. Kouzes are the authors of the award-winning and best-selling book The Leadership Challenge, now in its sixth edition, which has sold more than 2.5 million copies worldwide and is available in 22 languages.