Unstable Mean Context Causes Sensitivity Loss and Biased Estimation of Variability

doi:10.1167/15.4.15

	Unstable Mean Context Causes Sensitivity Loss and Biased Estimation of Variability
	Tong Ke 1,2; Ji Luyan 3; Chen Wenfeng1 ; Fu Xiaolan1
第一作者	Tong Ke
心理所单位排序	1
摘要	A recent study has suggested that statistical representations of ensemble objects may provide contextual stability to facilitate perception. The present study investigated whether facilitating such perception occurs in the extraction of variability information and how the stability of context mean values influences variability perception. We designed two tasks in which participants directly judged the variability of stimuli. In Experiment 1, we manipulated both the stability of the mean values and the exposure time to observe the time course of stability facilitation. In Experiment 2, we decomposed the stability of the context mean values into between-trials and within-trial levels to further investigate the mechanism of such facilitation. The results revealed that stable mean contexts do facilitate variability perception. In particular, unstable long-term mean context causes loss of sensitivity to variability whereas response bias is determined by the interaction between long-term and transient mean stability.
学科领域	认知心理学
	2015
语种	英语
DOI	10.1167/15.4.15
发表期刊	Journal of Vision
ISSN	1534-7362
卷号	5 期号:4 页码:15
收录类别	其他
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/20725
专题	脑与认知科学国家重点实验室
通讯作者	Chen Wenfeng
作者单位	1.State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China 2.University of Chinese Academy of Sciences, Beijing, China 3.Psychopathology and Affective Neuroscience Laboratory, Department of Experimental-Clinical and Health Psychology, Ghent University, Ghent, Belgium
第一作者单位	中国科学院心理研究所
通讯作者单位	中国科学院心理研究所
推荐引用方式 GB/T 7714	Tong Ke,Ji Luyan,Chen Wenfeng,et al. Unstable Mean Context Causes Sensitivity Loss and Biased Estimation of Variability[J]. Journal of Vision,2015,5(4):15.
APA	Tong Ke,Ji Luyan,Chen Wenfeng,&Fu Xiaolan.(2015).Unstable Mean Context Causes Sensitivity Loss and Biased Estimation of Variability.Journal of Vision,5(4),15.
MLA	Tong Ke,et al."Unstable Mean Context Causes Sensitivity Loss and Biased Estimation of Variability".Journal of Vision 5.4(2015):15.

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