JAMES M. KOUZES and BARRY Z. POSNER are the bestselling co-authors of The Leadership Challenge, Credibility, The Truth About Leadership, Encouraging the Heart, A Leader's Legacy, and over a dozen other books and workbooks on leadership. They also developed the highly-acclaimed LPI^(R) Leadership Practices Inventory^(R) a 360-degree assessment tool based on The Five Practices of Exemplary Leadership. James is a fellow at the Doerr Institute for New Leaders at Rice University and formerly the Dean's Executive Fellow of Leadership, Leavey School of Business at Santa Clara University. Barry holds the Michael J. Accolti, S.J., Chair at Santa Clara University and is Professor of Leadership with the Leavey School of Business.