James M. Kouzes and Barry Z. Posner are the bestselling coauthors of The Leadership Challenge, The Truth About Leadership, A Leader's Legacy, Credibility, Encouraging the Heart, The Leadership Challenge Workshop, and over a dozen other books and workshops on leadership. They also developed the highly-acclaimed Leadership Practices Inventory (LPI), a 360-degree assessment tool based on The Five Practices of Exemplary Leadership. They are among the most sought-after scholars and educators on the subjects of leadership and leadership development.