Organizations are striving to succeed in an increasingly complex global, political, and economic environment. This book provides an overview of the theoretical and research foundation for our current understanding of organization change including the types of change organizations experience. It reviews various models of organization change, including a new model developed by Burke-Litwin, and demonstrates how these models can be used to diagnose change issues in organizations. Separate chapters are devoted to the role of leaders in initiating and implementing change efforts and the more popular change interventions being implemented in organizations today. The concluding chapter discusses implications for further theory development, conducting research on organization change, and planning and managing change in organizations. The book is appropriate for use in advanced courses in the areas of organizational psychology, industrial psychology, and organizational behaviour. In addition, it will be of interest to consultants in organizational change and development that want a better understanding of the field and an update on the current research in this area.