Between 1970 and 2000, Stanford University enabled and supported a vigorous interdisciplinary community of organizations training, research, and theory building. Important breakthroughs occurred in theory development, and a couple of generations of doctoral and post-doctoral students received enhanced training and an extraordinary opportunity to build collegial networks. The model spread to other universities and work done at that time and place continues to exercise influence up to the present time. This volume both summarizes the contributions of the main paradigms that emerged at Stanford in those three decades, and describes the sociological conditions under which this remarkable, generative, environment came about. A series of chapters by some of the key contributors to these paradigms, who studied at Stanford between 1970 and 2000, are followed by brief comments on the conditions that fostered the development of these different paradigms, and on the development of the paradigms themselves.