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Updated: May 25, 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
Temporal stability and representational distinctiveness: key functions of orthographic working memory
Vanessa Costa1, Simon Fischer-Baum, Rita Capasso
1Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche (BioNeC), University of Palermo, Palermo, Italy. vanessacosta77@yahoo.it
Cognitive Neuropsychology
|January 18, 2012
Summary
Working memory research reveals two distinct functions for maintaining letter information: temporal stability and representational distinctiveness. Failures in these functions lead to specific memory errors, impacting cognitive processes.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Linguistics
Background:
- Working memory research aims to elucidate mechanisms for maintaining information identity and order.
- Orthographic working memory (WM) is crucial for processing written language.
Observation:
- Studied two individuals with acquired dysgraphia impacting their orthographic working memory.
- Observed distinct error patterns related to the temporal stability and representational distinctiveness of letters in memory.
Findings:
- Identified two dissociable functions within orthographic WM: one for temporal stability (order) and another for representational distinctiveness (identity).
- Demonstrated that failures in temporal stability lead to decay effects, while failures in distinctiveness cause interference effects.
- Observed unique error patterns and serial position effects linked to these distinct WM functions.
Implications:
- Findings suggest a dual-component model for orthographic working memory, with separate mechanisms for order and identity.
- The principles of maintaining temporal stability and representational distinctiveness are likely fundamental across various working memory domains.
- Provides insights into the cognitive underpinnings of dysgraphia and potential avenues for intervention.
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