The book begins with a treatment of the role of science and the nature of theory and research. A discussion of the early origins and history of organizational behavior follows. This is the most comprehensive coverage of how organizational behavior emerged and grew. It presents and evaluates the first generation theorists, whose work began during the first 20 years. The subject matter covered is motivation, leadership, and organizational decision making. The institutional culture of organizational behavior is discussed and a vision for the future of the field is stated. Here the early history and the evidence from the theories are brought together in an effort to assess the identity of organizational behavior and where it might be headed.