THE SAMPLING OF CRITICAL, UNSHARED INFORMATION IN DECISION-MAKING GROUPS - THE ROLE OF AN INFORMED MINORITY

A collective information sampling model and observations of discussion content suggest that decision-making groups often fail to disseminate unshared information. This paper examines the role that a fully-infor med minority may play in facilitating the sampling and consideration o f unshared information. University students read a mystery and then me t in four-person groups to discuss the case. When critical clues were unshared among three members before discussion, a fully informed fourt h member (informed minority) promoted the discussion of these critical clues when participants thought the mystery had a demonstrably correc t answer (solve set) but not when they thought the clue may have been insufficient to solve definitively the case (judge set). None the less , under both salve and judge sets, the informed minority increased the likelihood that the group would identify the correct suspect. Social combination, information sampling, and minority influence interpretati ons of the results are discussed. (C) 1998 John Wiley & Sons, Ltd.