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Understanding Our Differences: Performance in Decision-Making Groups with Diverse Members

School of Business Administration, The University of Western Ontario, London, Ontario, N6A 3K7 Canada; Western Business School, The University of Western Ontario, London, Ontario, N6A 3K7 Canada.

The purpose of this article is to develop a model to explain performance in decision-making groups characterized by high diversity in composition. It begins with a brief discussion on the nature and effects of diversity. Previous research on group performance is then reviewed with the general conclusion that diverse groups perform less well than homogeneous ones do. This conclusion is challenged by closely examining a small group of studies specifically researching the effects of diversity, and it is shown that diversity can enhance a group's performance if it is integrated. Communication is proposed as an integrating mechanism, and a theory of communication in terms of preconditions is described. This theory is then used to develop propositions concerning the relationships among diversity, integration, and performance in decision-making groups. Implications for research and practice are discussed.

Key Words: groups • performance • diversity • integration • communication

Human Relations, Vol. 47, No. 5, 531-552 (1994)
DOI: 10.1177/001872679404700504


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