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Updated: May 9, 2026

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
Published on: June 12, 2017
What is working memory capacity, and how can we measure it?
Oliver Wilhelm1, Andrea Hildebrandt, Klaus Oberauer
1Department of Psychology, University of Ulm Ulm, Germany.
This study confirms a general working-memory capacity (WMC) factor underlies various tasks. Individual differences in WMC strongly relate to secondary memory and fluid intelligence, reflecting binding abilities.
Area of Science:
- Cognitive Psychology
- Psychometrics
Background:
- Working-memory capacity (WMC) is a key cognitive construct.
- Understanding the general factor of WMC and its relationship with other cognitive abilities is crucial.
Purpose of the Study:
- To investigate if diverse working-memory tasks measure a common WMC construct.
- To examine the relationship between WMC, secondary memory, cognitive control, and fluid intelligence.
Main Methods:
- Latent variable study with 270 subjects.
- Confirmatory factor analyses and structural-equation modeling.
- Utilized Binding, Updating, Recall-N-back, Complex Span, Simon, and Eriksen flanker tasks.
Main Results:
- A general WMC factor was supported.
- WMC showed negligible relations with cognitive control (response conflict).
- WMC demonstrated strong associations with secondary memory and fluid intelligence.
Conclusions:
- Individual differences in WMC reflect the capacity to form, sustain, and update arbitrary bindings.
- WMC is a robust predictor of higher-order cognitive functions like fluid intelligence and memory.
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