The tasks were murder mysteries for which the groups had to choose the most likely suspect from among three alternatives. Each task consisted of a description of the murder and information items on three suspects. The participants were told that their group was investigations. They were told to preliminary meeting after individually conducting compare notes and come to a consensus as to whom they thought was the most likely suspect given the information they had gathered. information set included 24 items of information, eight for each suspect. The complete The information items tended to incriminate or to exonerate the suspects. The information