Mayer N. Zald is a member of the American Academy of Arts and Sciences. He has been Chairman of the Section on Occupations, Organizations and Work and the Section on Collective Behavior and Social Movements, both of the American Sociological Association. He has also been Vice-President and a Council Member of the ASA. A two time Fellow of the Center for Advanced Studies in the Behavioral Sciences, he is the author of numerous books and articles, including Organizational Change: The Political Economy of the YMCA (Chicago, 1970) and editor (with Doug McAdam and John McCarthy) of Comparative Perspectives on Social Movements (Cambridge, 1996).