Chapter 1. Introduction; Conny Roggeband and Bert Klandermans -- Chapter 2. Sociological Understandings of Social Movements: A North American Perspective; Deana Rohlinger and Haley Gentile -- Chapter 3. Protest and Social Movements in Political Science; Kateřina Vráblíková -- Chapter 4. Anthropology and the Study of Social Movements; Ton Salman and Willem Assies -- Chapter 5. Individuals in Movements: A Social Psychology of Contention; Jacquelien van Stekelenburg and Bert Klandermans -- Chapter 6. Historians and the Study of Protest; Brian Dill and Ron Aminzade -- Chapter 7. Communication Sciences and the study of social movements; Jonathan Cable -- Chapter 8. Social movements and organization(s); Frank de Bakker, Frank den Hond and Mikko Laamanen -- Chapter 9. Social Movements in Law: An Interdisciplinary Analysis; Scott L. Cummings.This handbook provides a broad and comprehensive overview of the study of social movements and collective action, discussing the different disciplinary approaches that have developed. In addition to updated discussions of topics that were included in the 1st edition, this handbook includes substantial advances in the research and scholarship in the field. The study of collective behavior and contentious politics has spread to a number of new disciplines such as communication science, organization science and law. The international wave of new protests in 2013 spurred new scholarship as well. This revised and updated edition integrates the wealth of new theoretical insights and empirical work since 2007.