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Relation of Group Performance to Age

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Academy of Management Journal

September

THE RELATION OF GROUP PERFORMANCE TO THE AGE OF MEMBERS IN HOMOGENEOUS GROUPS ROSS A. WEBBER University of Pennsylvania Comparison of individual and group problem solving has a long history. From early works (24, 29) to later reviews (4, 20), group performance is seen to possess certain advantages over individual performance. Many researchers have explored the conditions (1, 7), tasks (5, 6), and group composition (11, 12, 13, 16, 18, 22, 23, 26) affecting these advantages. Others have pointed out the disadvantages and dangers (2, 9, 10, 20, 25, 27). Focus of This Research This project was designed to examine an unexplored aspect of group performance: the effect of the age of members of homogeneous groups. Origins of this study lie in two popular observations on current young people: First, they are less competitive and more cooperative than earlier generations ( 3 ) ; second, business students particularly are group oriented— perhaps too much so to suit some employers (14). Several studies and reports (8, 15) suggest that cooperative behavior in groups is associated with more effective performance. Homogeneous groups composed of persons of different ages, however, may exhibit different performance. Four hundred individuals and 80 five-person groups completed two 25item vocabulary synonym exercises. The individuals were drawn frofn management development programs and university classes and were balanced as follows: 1. 2. 3. 4. 100 undergraduate business students: mean age 20.2 years 100 graduate business students: mean age 24.6 100 middle level managers in various corporations: mean age 31.4 100 upper level managers and executives in various corporations: mean age 41.6

Each subject was given a vocabulary exercise which was completed while working alone. The test consisted of 25 questions, and the task was, "For

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