通过在人类皮质中选择性地使用证据来确认偏见
Hame Park1, Ayelet Arazi1, Bharath Chandra Talluri1,2
1Section Computational Cognitive Neuroscience, Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg 20251, Germany.
bioRxiv : the preprint server for biology
|July 9, 2024
概括
决策中的确认偏见源于人们如何使用信息,而不是他们最初如何处理感官证据. 这一发现表明,控制我们如何利用编码信息可以减轻偏见的选择.
科学领域:
- 认知神经科学 认知神经科学
- 决策科学 决策科学 决策科学
背景情况:
- 决策者表现出确认偏见,选择性地处理与现有信念一致的证据.
- 这种偏差的神经基础,无论是证据编码还是利用,仍然不清楚.
研究的目的:
- 调查确认偏差是否来自于感官证据编码或大脑中的证据利用.
- 区分决策过程中选择性证据处理背后的神经机制.
主要方法:
- 人类参与者使用顺序证据样本执行了视觉空间估计任务.
- 磁脑电图 (MEG) 在任务期间测量皮质人口活动.
- 对参与者随后的证据处理进行了分析,基于他们临时选择的一致性.
主要成果:
- 证据编码在皮质活动 (状和初级视觉皮层) 并没有根据与中间选择的一致性而有所不同.
- 编码证据在与先前选择的类别不一致时,对最终估计报告的贡献较小.
- 随后的证据处理是根据其与临时选择的一致性进行调整的,这表明了利用方面的偏差.
结论:
- 确认偏差源于使用编码的感觉证据,而不是其最初的编码.
- 这种信息利用偏差,而不是感官处理,为认知控制和改进决策提供了潜在的目标.
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