Social Influence and Perceptual Decision Making: A Diffusion Model Analysis
Social Influence and Perceptual Decision Making: A Diffusion Model Analysis
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DOI：
10.1177/0146167213508985
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发表时间：
2014-02-01
影响因子：
4
通讯作者：
Mojzisch, Andreas
中科院分区：
文献类型：
--
作者：
Germar, Markus;Schlemmer, Alexander;Mojzisch, Andreas
关于社会影响力的经典研究使用简单的知觉决策任务来研究他人的意见如何改变个人的判断。从那时起，社会心理学中最基本的问题之一就是社会影响是否会改变基本的感知过程。为了解决这个问题，我们使用了扩散模型分析。扩散模型提供了一种随机方法来分离快速二元决策背后的认知过程。按照这种方法，我们的研究是第一个解开社会对决策的影响是由于改变了可用的感官信息的摄取，还是由于改变了决策标准。在两个实验中，我们发现了一致的证据，证明社会影响会改变对可用感官证据的吸收。相比之下，参与者没有调整他们的决策标准。
Classic studies on social influence used simple perceptual decision-making tasks to examine how the opinions of others change individuals' judgments. Since then, one of the most fundamental questions in social psychology has been whether social influence can alter basic perceptual processes. To address this issue, we used a diffusion model analysis. Diffusion models provide a stochastic approach for separating the cognitive processes underlying speeded binary decisions. Following this approach, our study is the first to disentangle whether social influence on decision making is due to altering the uptake of available sensory information or due to shifting the decision criteria. In two experiments, we found consistent evidence for the idea that social influence alters the uptake of available sensory evidence. By contrast, participants did not adjust their decision criteria.