Discussion and Decision: The Interrelationship between Initial Preference Distribution and Group Discussion Content.

Data from an earlier published study were used to test the social decision scheme (SDS) proposition that initial distribution of preferences within a group influences the nature of subsequent discussion. Four-person groups confronted with a three-option decision task began discussion with an initial plurality, majority, or unanimity. We found that the prediscussion distribution of preferences was predictive of eventual group choice; plurality groups introduced the greatest number of facts, followed by majority, and then unanimity; minute-by-minute patterns of discussion were very different across the three initial distributions; dominant factions contributed the most to discussion; and under initial plurality, one minority preference was discussed significantly more heavily than the other. Discussion focuses on the possible role of preference orders in group decision-making processes and on possible explanations for why groups with different intitial preference distributions show different discussion patterns across time. Copyright 1999 Academic Press.