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This book presents a bold new theory of the processes of collective decision-making that draws on theoretical influences ranging from group decision theory through to the authors' own social representations theory. Moscovici and Doise offer a novel analysis of group conflict and the construction of consensus to produce a general theory of collective decisions.

Going beyond the traditional view that compromise is a negative process where group members merely comply in order to sustain cohesion, the authors argue that the conflict at the root of group decisions can be a positive force leading to changes in opinion and to innovation. Their theoretical framework is illustrated in depth with numerous empirical investigations from around the world.