How do social researchers know how to select the action research (AR) approach that is most appropriate for their study? Aimed at providing newcomers to AR with the different approaches they seek, Introduction to Action Research, 2/e introduces the history, philosophy, social change agenda, methodologies, ethical arguments for, and fieldwork tools of AR. The book opens with a brief presentation of two cases of AR. This is followed by chapter on the philosophical and methodological arguments for AR as a form of scientific inquiry that better meets scientific standards than what is currently called "social science" in academia. The authors next explore the marginalization of AR activities in academia, followed by four cases drawn from the authors own practice, including some examples of failures. Two new chapters engage the student and researcher into the current debates on action research as "tradition" or its own "methodology", and how action research takes shape in the university environment. In the final section of the book the authors cover six different approaches to doing AR. Throughout the book, the authors employ a consistent AR praxis supported by suitable methods and tools to integrate a philosophical, methodological, and political economic position to view the different kinds of AR practices. Introduction to Action Research provides experienced researchers and practitioners with more appropriate and productive ways of using AR for conducting social research.