Groups and deliberation

We present a group-based approach to the study of deliberation. Deliberation occurs in groups, yet many studies of deliberation do not take the group as a unit of analysis. We argue that group composition and the attendant social dynamics to which they give rise are an important aspect of deliberation. We offer several examples of ways to study these effects, including the interaction of gender composition and the group decision rule in the context of an experimental study of decisions about justice, the effect of racial composition in simulated juries, and the effect of ideological composition in local meetings. We examine the consequences of these factors on a variety of outcomes, including individuals' private opinion, individuals' behaviour and group decisions. In conclusion we discuss the implications that group effects have for empirical and normative theories of deliberation.