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Behav Res Methods. 2011 Jun;43(2):508-21. doi: 10.3758/s13428-010-0053-9.

Examining workgroup diversity effects: does playing by the (group-retention) rules help or hinder?

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Department of Psychology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada.


Group diversity researchers are often faced with the problem of calculating diversity indices for groups that are incomplete due to participant nonresponse. Because participant nonresponse may attenuate the correlations that are observed between group diversity scores and outcome variables, some researchers use group-retention rules based on within-group response rates. With this approach, only those groups that have a within-group response rate at, or higher than, the rate prescribed by the group-retention rule are retained for subsequent analyses. We conducted two sets of experiments using computer simulations to determine the usefulness of group-retention rules. We found that group-retention rules are not a substitute for a high response rate and may decrease the accuracy of observed relations, and consequently, we advise against their use in diversity research.

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