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Related Experiment Video

Updated: Apr 11, 2026

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

Published on: January 26, 2024

Shape and spatial working memory capacities are mostly independent.

Motoyuki Sanada¹, Koki Ikeda², Toshikazu Hasegawa³

¹Department of Cognitive and Behavioral Sciences, Graduate School of Arts and Science, The University of Tokyo Tokyo, Japan ; Japan Society for the Promotion of Science Tokyo, Japan.

Frontiers in Psychology

|June 5, 2015

Summary

This summary is machine-generated.

Visual working memory (WM) may have separate systems for visual and spatial information, but they share minimal resources. This study reconciles conflicting findings on visual and spatial WM independence and overlap.

Keywords:

dual task spatial working memory visual working memory visuo-spatial sketchpad working memory capacity

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Area of Science:

Cognitive Psychology
Neuroscience

Background:

The structure of visual working memory (WM) is debated, with theories proposing either a common resource or distinct subsystems.
Logie (1995) proposed separate visual and spatial WM, while Wood (2011) suggested shared resources based on interference between shape and spatial tasks.

Purpose of the Study:

To re-examine the interference between visual and spatial working memory.
To reconcile conflicting evidence regarding shared resources in visual and spatial WM.

Main Methods:

A dual-task paradigm was employed to assess interference between shape and spatial WM.
Careful control of confounding factors like cue presentation, task order, and WM load was implemented.
A highly powered experiment (N=90) was conducted.

Main Results:

The interference pattern reported by Wood (2011) was reproduced.
The magnitude of interference was small (d = 0.24), indicating minimal resource overlap.
Shape and spatial WM tasks share some resources but are largely independent.

Conclusions:

Visual and spatial working memory systems share a small, but significant, common resource.
Despite minimal overlap, visual and spatial WM should be considered mostly independent systems.
This reconciles previous findings, supporting both shared resources and the classical visuo-spatial separation hypothesis.