Together, slowly but surely: the role of social interaction and feedback on the build-up of benefit in collective decision-making.
Together, slowly but surely: the role of social interaction and feedback on the build-up of benefit in collective decision-making.
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DOI：
10.1037/a0025708
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发表时间：
2012-02
期刊：
影响因子：
--
通讯作者：
Frith C
中科院分区：
文献类型：
--
作者：
Bahrami B;Olsen K;Bang D;Roepstorff A;Rees G;Frith C
客观参照对于形成关于外部世界的可靠信念是必要的，这几乎是不言而喻的。然而，孔多塞认为，纯粹的主观信息--如果通过社交互动分享和组合--足以准确理解外部世界。我们问，社会互动和客观参照对集体知觉信念的形成和建立是否有不同的贡献。在三个实验中，二人组在两个间隔的强制选择视觉搜索任务中做出个人和集体的知觉决定。在实验1中，参与者彼此口头协商他们的集体决定，并在每次实验结束时收到关于准确性的反馈。在实验2中，没有给予反馈。在实验3中，不允许交流，但提供了反馈。社会互动(实验1和实验2与实验3)在知觉决策中产生了显著的集体利益。当没有反馈时，最初并没有获得集体利益，但通过实践获得了集体利益，在实验的后半部分，有(实验1)和没有(实验2)反馈获得的集体利益是健壮的，在统计上没有区别。综上所述，这项工作表明，社会互动对于建立可靠的协作利益是必要的，而客观参考只是加速了这一进程，但如果有足够的实践机会，则不是建立成功合作所必需的。
That objective reference is necessary for formation of reliable beliefs about the external world is almost axiomatic. However, Condorcet suggested that purely subjective information—if shared and combined via social interaction—is enough for accurate understanding of the external world. We asked if social interaction and objective reference contribute differently to the formation and build-up of collective perceptual beliefs. In three experiments, dyads made individual and collective perceptual decisions in a two-interval, forced-choice, visual search task. In Experiment 1, participants negotiated their collective decisions with each other verbally and received feedback about accuracy at the end of each trial. In Experiment 2, feedback was not given. In Experiment 3, communication was not allowed but feedback was provided. Social interaction (Experiments 1 and 2 vs. 3) resulted in a significant collective benefit in perceptual decisions. When feedback was not available a collective benefit was not initially obtained but emerged through practice to the extent that in the second half of the experiments, collective benefits obtained with (Experiment 1) and without (Experiment 2) feedback were robust and statistically indistinguishable. Taken together, this work demonstrates that social interaction was necessary for build-up of reliable collaborative benefit, whereas objective reference only accelerated the process but—given enough opportunity for practice—was not necessary for building up successful cooperation.
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DOI：
10.1073/pnas.0711099105
发表时间：
2008-05-06
影响因子：
11.1
作者：
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DOI：
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16.2
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