Confirmation bias in the utilization of others' opinion strength.,Nature Neuroscience

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Confirmation bias in the utilization of others' opinion strength.
Nature Neuroscience ( IF 21.2 ) Pub Date : 2019-12-16 , DOI: 10.1038/s41593-019-0549-2
Andreas Kappes ₁ , Ann H Harvey ₂ , Terry Lohrenz ₃ , P Read Montague _{3,

4} , Tali Sharot ₅

Affiliation

Humans tend to discount information that undermines past choices and judgments. This confirmation bias has significant impact on domains ranging from politics to science and education. Little is known about the mechanisms underlying this fundamental characteristic of belief formation. Here we report a mechanism underlying the confirmation bias. Specifically, we provide evidence for a failure to use the strength of others' disconfirming opinions to alter confidence in judgments, but adequate use when opinions are confirmatory. This bias is related to reduced neural sensitivity to the strength of others' opinions in the posterior medial prefrontal cortex when opinions are disconfirming. Our results demonstrate that existing judgments alter the neural representation of information strength, leaving the individual less likely to alter opinions in the face of disagreement.

中文翻译：

在利用他人意见力方面的确认偏差。

人们倾向于打折破坏过去选择和判断的信息。这种确认偏差对从政治到科学和教育等各个领域都具有重大影响。关于信念形成这一基本特征的机制知之甚少。在这里，我们报告了确认偏差的潜在机制。具体而言，我们提供了证据，表明未能利用他人的不确定性意见的力量来改变对判决的信心，但是当意见具有确认性时，就会适当使用。这种偏见与当观点不一致时，对后内侧前额叶皮层中其他观点的力量的神经敏感性降低有关。我们的结果表明，现有的判断会改变信息强度的神经表示，

更新日期：2019-12-17

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