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Related Concept Videos

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
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The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is also...
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Related Experiment Video

Updated: Jun 27, 2026

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
09:05

Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)

Published on: June 12, 2017

Modeling individual differences in working memory performance: a source activation account.

Larry Z Daily1, Marsha C Lovett, Lynne M Reder

  • 1Carnegie Mellon University.

Cognitive Science
|September 28, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces a new computational model for working memory capacity, explaining individual differences through "source activation." The model accurately predicts individual performance patterns in cognitive tasks, enhancing our understanding of working memory.

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Area of Science:

  • Cognitive Psychology
  • Computational Neuroscience
  • Human Cognition

Background:

  • Working memory is crucial for cognitive tasks, involving information processing and maintenance.
  • Existing models inadequately explain individual differences in working memory capacity and performance.
  • Current models fail to predict specific patterns of performance across individuals.

Purpose of the Study:

  • To propose a novel computational model of working memory capacity.
  • To account for individual variations in sensitivity to working memory demands.
  • To predict individual performance patterns in cognitive tasks.

Main Methods:

  • Developed a computational model based on "source activation" to represent working memory capacity.
  • Applied the model to analyze individual subject data across two experimental studies.
  • Focused on maintaining goal-relevant information in an available state.

Main Results:

  • The model successfully captured individual working memory effects with high detail.
  • Demonstrated the model's ability to predict unique performance patterns for each subject.
  • Provided empirical support for the role of source activation in working memory.

Conclusions:

  • Source activation is a viable interpretation of working memory capacity.
  • The proposed model offers a more personalized approach to understanding working memory.
  • This work advances computational models of human cognition and individual differences.