In one condition of an experiment conducted by Gerald Stasser (Stasser & Titus,1985),all group members had access to the same information,and in another condition,members had unique information that other group members didn't know.In the second (unshared information)condition,the group made a worse decision than in the first (shared information)condition.This occurred because groups

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In the experiment by Stasser and Titus (1985), the phenomenon observed was that groups tend to focus discussion on information that all members know, rather than incorporating unique information held by individual members. This leads to a poorer decision-making outcome when not all information is shared among group members.

In One Condition of an Experiment Conducted by Gerald Stasser