Book excerpt: These two volumes present the most important recent developments in the institutional theory of culture and demonstrate their practical applications. Sometimes called 'grid-group analysis' or 'cultural theory', they derive from the work of Durkheim in the 1880s and 1900s and develop the insights of the anthropologist Mary Douglas and her followers from the 1960s on. First redefined within social and cultural anthropology, the theory's influence is shown in recent years to have permeated all the main disciplines of social science with substantial implications for politics, history, business, work and organizations, the environment, technology and risk, and crime and consumption. Today, the institutional theory of culture now rivals the rational choice, Weberian and postmodern outlooks in influence across the social sciences.