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恢复自上而下的控制假设:工作记忆中的突显效应会随时间而克服。

Restoring a top-down control assumption: Salience effects in working memory are overcome with time.

作者信息

Gaspelin Nicholas, Cowan Nelson

机构信息

Department of Psychological Sciences, University of Missouri.

出版信息

J Exp Psychol Gen. 2025 Aug;154(8):2301-2317. doi: 10.1037/xge0001776. Epub 2025 May 15.

Abstract

Working memory is a short-term storage space for cognitive information with a highly limited capacity. Due to this limited capacity, many theories address the issue of how items compete in working memory. The present study assesses whether the relative salience of items is automatically important or whether the deployment of working memory is more flexible than that. Some recent studies have suggested that salient stimuli are automatically prioritized in visual working memory. If true, this would suggest a fundamental inflexibility in how information is stored and remembered. We critically evaluate this claim and provide evidence favoring a more flexible account, which allows for top-down control to mitigate the influence of salience on working memory representations. Across four experiments, we support this account by demonstrating that previously observed relative salience effects on recall are not fully automatic and can be greatly reduced by allowing sufficient time to find all task-relevant objects. These findings suggest that salient objects are not inflexibly prioritized in working memory; but rather low-salience objects are difficult to find and encode, especially in large displays at brief time limits. (PsycInfo Database Record (c) 2025 APA, all rights reserved).

摘要

工作记忆是一个用于存储认知信息的短期存储空间,其容量极为有限。由于这种有限的容量,许多理论探讨了项目在工作记忆中如何竞争的问题。本研究评估项目的相对显著性是否自动具有重要意义,或者工作记忆的部署是否比这更具灵活性。最近的一些研究表明,在视觉工作记忆中,显著刺激会自动被优先处理。如果这是真的,那就意味着在信息的存储和记忆方式上存在根本的不灵活性。我们对这一观点进行了批判性评估,并提供证据支持一种更具灵活性的解释,即允许自上而下的控制来减轻显著性对工作记忆表征的影响。在四项实验中,我们通过证明先前观察到的对回忆的相对显著性效应并非完全自动产生,并且通过留出足够的时间来找到所有与任务相关的对象,可以大大减少这种效应,从而支持了这一解释。这些发现表明,在工作记忆中,显著对象并非被僵硬地优先处理;相反,低显著性对象难以找到和编码,尤其是在时间限制较短的大型显示中。(PsycInfo数据库记录(c)2025美国心理学会,保留所有权利)

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