Now with a new chapter on Social Identity Leadership! Adopted in thousands of courses in 89 countries and translated into 15 different languages, this market-leading text successfully combines an academically robust account of the major theories and models of leadership with an accessible style and focus on how leadership theory can inform leadership practice. Peter G. Northouse uses a consistent structure for each chapter, allowing readers to easily compare and contrast different theories. Case studies and questionnaires provide students with practical examples and opportunities to deepen their understanding of their own leadership style.