Twenty-Five Years of Hidden Profiles in Group Decision Making: A Meta-Analysis
65 studies, 101 independent effects, 3,189 groups. Groups mentioned two standard deviations more pieces of common information than unique information; hidden-profile groups were eight times less likely to find the solution than groups given full information; information coverage and discussion focus both predicted decision quality positively, coverage more strongly; communication medium affected neither unique-information pooling nor decision quality. Stated moderators: group size, total information load, proportion of unique information, task demonstrability, hidden-profile strength. Author order confirmed at the Crossref item record: Lu first, Yuan second, McLeod third
65 studies, 101 independent effects, 3,189 groups. Groups mentioned two standard deviations more pieces of common information than unique information; hidden-profile groups were eight times less likely to find the solution than groups given full information; information coverage and discussion focus both predicted decision quality positively, coverage more strongly; communication medium affected neither unique-information pooling nor decision quality. Stated moderators: group size, total information load, proportion of unique information, task demonstrability, hidden-profile strength. Author order confirmed at the Crossref item record: Lu first, Yuan second, McLeod third
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Lu, L., Yuan, Y. C., & McLeod, P. L. (2012). Twenty-Five Years of Hidden Profiles in Group Decision Making: A Meta-Analysis. Personality and Social Psychology Review, 16(1), 54-75. doi:10.1177/1088868311417243.