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Updated: Jun 17, 2026
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Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
Published on: June 12, 2017
The components of working memory updating: an experimental decomposition and individual differences
Ullrich K H Ecker1, Stephan Lewandowsky, Klaus Oberauer
1School of Psychology, University of Western Australia. ullrich.ecker@uwa.edu.au
Summary
Working memory updating (WMU) involves retrieval, transformation, and substitution processes. While WMU predicts higher abilities, substitution skills uniquely contribute beyond general working memory capacity.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Cognition
Background:
- Working memory updating (WMU) is crucial for daily tasks and predicts higher mental abilities.
- The specific cognitive processes underlying WMU remain largely uncharacterized.
- Understanding WMU components is key to explaining its predictive power.
Purpose of the Study:
- To decompose WMU into its fundamental component processes: retrieval, transformation, and substitution.
- To investigate the independent contributions of these components to updating performance.
- To model the relationship between WMU performance, its components, and working memory capacity (WMC).
Main Methods:
- A large-scale experiment systematically combining retrieval, transformation, and substitution processes.
- Structural equation modeling to analyze interindividual covariation and experimental effects simultaneously.
- Assessment of WMU task performance and established working memory capacity (WMC) measures.
Main Results:
- The three proposed component processes (retrieval, transformation, substitution) contribute independently to WMU performance.
- Working memory capacity (WMC) is a strong predictor of overall WMU skills.
- Substitution skills showed independence from WMC, suggesting a unique contribution.
Conclusions:
- WMU performance is influenced by distinct cognitive operations, each with independent effects.
- The predictive power of WMU for higher mental abilities may stem largely from shared variance with WMC.
- Substitution skills represent a distinct cognitive function that may independently predict higher-level cognitive abilities.
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