University of Southern California, Los Angeles, CA, USA.
Pers Soc Psychol Rev. 2012 Feb;16(1):54-75. doi: 10.1177/1088868311417243. Epub 2011 Sep 6.
This meta-analysis summarized findings from 65 studies using the hidden profile paradigm (101 independent effects, 3,189 groups). Results showed (a) groups mentioned two standard deviations more pieces of common information than unique information; (b) hidden profile groups were eight times less likely to find the solution than were groups having full information; (c) two measures of information pooling, including the percentage of unique information mentioned out of total available information (the information coverage measure) and the percentage of unique information out of total discussion (the discussion focus measure), were positively related to decision quality, but the effect of information coverage was stronger than that of discussion focus; and communication medium did not affect (d) unique information pooling or (e) group decision quality. Group size, total information load, the proportion of unique information, task demonstrability, and hidden profile strength were found to moderate these effects. Results are discussed in terms of how they offer conceptual advancement for future hidden profile research.
这项荟萃分析总结了使用隐藏剖面范式的 65 项研究的结果（101 个独立效应，3189 个组）。结果表明：（a）与独特信息相比，组提到的共同信息多出两个标准差；（b）隐藏剖面组找到解决方案的可能性比具有完整信息的组低八倍；（c）两种信息汇集的衡量标准，包括提及的独特信息占总可用信息的百分比（信息覆盖度衡量标准）和讨论中的独特信息占总讨论的百分比（讨论焦点衡量标准），与决策质量呈正相关，但信息覆盖度的影响大于讨论焦点的影响；并且沟通媒介不影响（d）独特信息的汇集或（e）群体决策质量。研究还发现，组大小、总信息量、独特信息量的比例、任务可演示性和隐藏剖面强度调节了这些效应。结果从未来隐藏剖面研究的概念推进方面进行了讨论。
