Is there a K in capacity? Assessing the structure of visual short-term memory.

Cognitive Psychology
Maria M RobinsonDavid E Irwin

Abstract

Visual short-term memory (VSTM) is a cognitive structure that temporarily maintains a limited amount of visual information in the service of current cognitive goals. There is active theoretical debate regarding how limits in VSTM should be construed. According to discrete-slot models of capacity, these limits are set in terms of a discrete number of slots that store individual objects in an all-or-none fashion. According to alternative continuous resource models, the limits of VSTM are set in terms of a resource that can be distributed to bolster some representations over others in a graded fashion. Hybrid models have also been proposed. We tackled the classic question of how to construe VSTM structure in a novel way, by examining how contending models explain data within traditional VSTM tasks and also how they generalize across different VSTM tasks. Specifically, we fit theoretical ROCs derived from a suite of models to two popular VSTM tasks: a change detection task in which participants had to remember simple features and a rapid serial visual presentation task in which participants had to remember real-world objects. In 3 experiments we assessed the fit and predictive ability of each model and found consistent support for ...Continue Reading

Citations

Feb 16, 2021·Frontiers in Psychology·Roland MayrhoferCorinna Lindner
Feb 12, 2021·Journal of Cognitive Neuroscience·Isabel E AspTimothy F Brady
Apr 2, 2021·Attention, Perception & Psychophysics·Árni Kristjánsson, Dejan Draschkow
Aug 28, 2021·Journal of Cognitive Neuroscience·Isabel E AspTimothy F Brady

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