Communication networks in task-performing groups - Effects of task complexity, time pressure, and interpersonal dominance

In an experiment on the emergence of communication networks, 48 groups, each consisting of 4 or 5 members, were randomly assigned to the cells of a 2 (high vs. low time pressure) x 2 (high vs. low task complexity) factorial design and completed a decision-making task. The interpersonal dominance of each member was measured via the Dominance scale of the Personality Research Form (PRF). Results showed that members higher in dominance emerged as more central in the group communication network both sending and receiving more messages than members lower in dominance. Group members correctly perceived that those higher in dominance participated more in discussion. Communication was more centralized in groups that worked on the low complexity task than in groups that worked on the high complexity task Members correctly perceived that participation was more unequally distributed in more centralized groups. An anticipated interaction effect, with time pressure moderating the effect of task complexity was not supported.