James M. Kouzes and Barry Z. Posner are renowned leadership experts and coauthors of the international bestseller, The Leadership Challenge®, and a comprehensive collection of leadership resources, including Credibility, Encouraging the Heart, and Everyday People, Extraordinary Leadership. Their work, grounded in over 40 years of research, includes the widely used Leadership Practices Inventory (LPI®), a 360-degree leadership assessment. As leading scholars and educators, they have dedicated their careers to helping individuals and organizations unlock their leadership potential.