A study examining small group performance replicated and extended a previous study by L. Kelly and R. L. Duran to reanalyze their operationalization of cohesiveness. To test the hypotheses of the original study and to explore questions about using the polarization index as an indication of group cohesiveness, the study used a large number of…

To assess whether communication behaviors differ between high and low consensus groups, a study considered the comparative interaction of the first meetings of high and low consensus groups, the first and final meetings of high consensus groups, and the first and final meetings of low consensus groups. Subjects, 84 students in a small group…

The decisions President Richard Nixon and his closest advisors made in the Watergate coverup were products of what Irving Janis calls "groupthink." Groupthink, a type of decision-making emphasizing unanimity over objective evaluation, develops when the decision makers (1) form a group of marked cohesiveness, (2) insulate themselves from…