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When are two heads better than one and why?(REPORTS)(Author abstract)(Report)

Koriat, Asher

Science, April 20, 2012, Vol.336(6079), p.360(3) [Tạp chí có phản biện]

ISSN: 0036-8075

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  • Nhan đề:
    When are two heads better than one and why?(REPORTS)(Author abstract)(Report)
  • Tác giả: Koriat, Asher
  • Chủ đề: Interpersonal Relations -- Research
  • Là 1 phần của: Science, April 20, 2012, Vol.336(6079), p.360(3)
  • Mô tả: In many instances, decisions made by relatively homogeneous groups (two or more people) coalesce around the choice that people are most confident in, and this in turn stems from the sampling of representations that individuals perform when making their choices. Koriat (p. 360; see the Perspective by Hertwig ) found that if most of the group members are able to form accurate judgments, then confidence and accuracy coincide and the consensus choice is the correct one. By contrast, if few people know the right answer, then heterogeneity in people's representations appeared to offer a surer path to accuracy. A recent study, using a perceptual task, indicated that two heads were better than one provided that the members could communicate freely, presumably sharing their confidence in their judgments. Capitalizing on recent work on subjective confidence, I replicated this effect in the absence of any dyadic interaction by selecting on each trial the decision of the more confident member of a virtual dyad. However, because subjective confidence monitors the consensuality rather than the accuracy of a decision, when most participants were in error, reliance on the more confident member yielded worse decisions than those of the better individual. Assuming that for each issue group decisions are dominated by the more confident member, these results help specify when groups will be more or less accurate than individuals. [PUBLICATION ]
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0036-8075

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