BUS603: Managing People

Obviously, work groups can be found in various sizes. Early management theorists spent considerable time and effort to no avail attempting to identify the right size for the various types of work groups. There is simply no right number of people for most group activities. They did, however, discover a great deal about what happens as group size increases. A number of relevant size-outcome relationships are summarized in Table 9.2.

Group Interaction Patterns. First, we will consider the effects of variations in group size on group interaction patterns. A series of classic studies by Bales and Borgatta examined this issue using a technique known as interaction process analysis. This technique records who says what to whom; through using it, Bales and his colleagues found that smaller groups (2–4 persons) typically exhibited greater tension, agreement, and opinion seeking, whereas larger groups (13–16 persons) showed more tension release and giving of suggestions and information. This suggests that harmony is crucial in smaller groups and that people in them have more time to develop their thoughts and opinions. On the other hand, individuals in larger groups must be more direct because of the increased competition for attention.

Job Attitudes. Increases in work group size are fairly consistently found to be inversely related to satisfaction, although the relationship is not overly strong. That is, people working in smaller work units or departments report higher levels of satisfaction than those in larger units. This finding is not surprising in view of the greater attention one receives in smaller groups and the greater importance group members typically experience in such things as their role set.

Absenteeism and Turnover. Available research indicates that increases in work group size and absenteeism are moderately related among blue-collar workers, although no such relationship exists for white-collar workers. One explanation for these findings is that increased work group size leads to lower group cohesiveness, higher task specialization, and poorer communication. As a result, it becomes more difficult to satisfy higher-order needs on the job, and job attendance becomes less appealing. This explanation may be more relevant in the case of blue-collar workers, who typically have little job autonomy and control. White-collar workers typically have more avenues available to them for need satisfaction. Similar findings exist for employee turnover. Turnover rates are higher in larger groups. It again can be hypothesized that because larger groups make need satisfaction more difficult, there is less reason for individuals to remain with the organization.

Productivity. No clear relationship has been found between group size and productivity. There is probably a good reason for this. Unless we take into consideration the type of task that is being performed, we really cannot expect a clear or direct relationship. Mitchell explains it as follows:

Think of a task where each new member adds a new independent amount of productivity (certain piece-rate jobs might fit here). If we add more people, we will add more productivity. . . . On the other hand, there are tasks where everyone works together and pools their resources. With each new person the added increment of new skills or knowledge decreases. After a while increases in size will fail to add much to the group except coordination and motivation problems. Large groups will perform less well than small groups. The relationship between group size and productivity will therefore depend on the type of task that needs to be done.

However, when we look at productivity and group size, it is important to recognize the existence of a unique factor called social loafing, a tendency for individual group members to reduce their effort on a group task. This phenomenon occurs when (1) people see their task as being unimportant or simple, (2) group members think their individual output is not identifiable, and (3) group members expect their fellow workers to loaf. Social loafing is more prevalent in larger groups than in smaller groups, presumably because the above three factors are accentuated. From a managerial standpoint, this problem can be reduced by providing workers with greater responsibility for task accomplishment and more challenging assignments. This issue is addressed in the following chapter on job design.