nep-ict New Economics Papers
on Information and Communication Technologies
Issue of 2009‒01‒24
one paper chosen by
Walter Frisch
University Vienna

  1. Information Flow and Influence during Collective Search, Discussion, and Choice By Abele, Susanne; Vaughan-Parsons, Sandra I.; Stasser, Garold

  1. By: Abele, Susanne (Miami University, Department of Psychology); Vaughan-Parsons, Sandra I. (Howard Community College, Columbia); Stasser, Garold (Miami University, Department of Psychology)
    Abstract: If decision-relevant information is distributed among team members, the group is inclined to focus on shared information and to neglect unshared information, resulting often in suboptimal decisions. This classical finding is robust in experimental settings, in which the distribution of information is created artificially by an experimenter. The current paper looks at information sharing effects when access to information is not restricted, and decision makers are very familiar with the decision task. We analyzed archival search and discussion data obtained from business executives completing a personnel selection exercise. Information popularity in the population from which groups were composed predicted number of group members accessing items during information searches and whether the group discussed the items. The number of group members who accessed an item predicted whether information was repeated during discussion, and repetition predicted which items were included on an executive summary. Moreover, cognitively central group members were more influential than cognitively peripheral members. One implication is that collective decision making amplifies what is commonly known at the expense of disseminating what is not.
    Keywords: Information Sharing, Cognitive Centrality, Group Decision Making, Collective Choice, Archival Data
    JEL: D23 D83 M51 L84
    Date: 2008–12–30

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