Information-Sharing in Three Interacting Minds Solving a Simple Perceptual Task

Abstract

We study three-person groups solving a simple, two alternative forced choice task of perceptual nature. The group members provide individual answers and afterwards discuss and reach a joint decision. Different models of information sharing describe the theoretical relationship between group and individual performance. Experimental data shows that average-performing members can benefit from cooperation, but the groups do not outperform their best members. Results point to voting as the best explanation of the behavior of the groups.


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