Larson, J. R., Jr., Christensen, C., Abbott, A. S., & Franz, T. M. (1996).
Diagnosing groups: Charting the flow of information in medical decision making
teams. Journal of Personality and Social Psychology, 71,
Abstract. Several hypotheses derived from an information sampling
model of group discussion were tested using 3-person teams of physicians
given 2 hypothetical medical cases to diagnose. Some of the information
about each case was given to all 3 team members prior to discussion (shared
information) whereas the rest was divided among them (unshared information).
As predicted, shared information was, overall, more likely to be discussed
than unshared information, and it was brought into discussion earlier.
In addition, it was found that team leaders repeated substantially more case
information than did other members and that, over time, they repeated unshared
information at a steadily increasing rate. The latter findings are
interpreted as evidence of leaders' information management role in problem-solving