Why do categories affect stimulus judgment?
Why do categories affect stimulus judgment?
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DOI：
10.1037//0096-3445.129.2.220
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发表时间：
2000-06-01
影响因子：
4.1
通讯作者：
Vevea, JL
中科院分区：
文献类型：
--
作者：
Huttenlocher, J;Hedges, LV;Vevea, JL
作者测试了刺激判断的类别效应模型。该模型认为刺激判断的目标是达到高精度。因此，人们将不精确表示的刺激置于先验信息的背景下，捕获在类别中，将不精确的细粒度刺激值与先验（类别）信息结合起来。这个过程可以比作贝叶斯统计过程，旨在最大限度地提高估计的平均准确度。如果人们遵循建议的程序来最大限度地提高准确性，那么他们的估计应该会受到类别中实例分布的影响。在目前的实验中，参与者再现了一维刺激。提出了不同的先验分布。实验证实，人们的刺激估计会受到先验分布变化的影响，从而提高刺激再现的准确性。
The authors tested a model of category effects on stimulus judgment. The model holds that the goal of stimulus judgment is to achieve high accuracy. For this reason, people place inexactly represented stimuli in the context of prior information, captured in categories, combining inexact fine-grain stimulus values with prior (category) information. This process can be likened to a Bayesian statistical procedure designed to maximize the average accuracy of estimation. If people follow the proposed procedure to maximize accuracy, their estimates should be affected by the distribution of instances in a category. In the present experiments, participants reproduced one-dimensional stimuli. Different prior distributions were presented. The experiments verified that people's stimulus estimates are affected by variations in a prior distribution in such a manner as to increase the accuracy of their stimulus reproductions.