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Related Experiment Videos

Long-term working memory in text production.

R T Kellogg1

  • 1Department of Psychology, University of Missouri, Rolla 65409-1270, USA. kellogg@umr.edu

Memory & Cognition
|March 30, 2001
PubMed
Summary
This summary is machine-generated.

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Cognitive tasks rely on both verbal ability and domain knowledge. Long-term working memory (LTWM) may aid text production by reducing interference for experts.

Area of Science:

  • Cognitive Psychology
  • Educational Psychology
  • Human Memory

Background:

  • The limited capacity of short-term working memory (STWM) may be supplemented by long-term working memory (LTWM) in individuals with extensive domain-specific knowledge.
  • This theory is particularly relevant for high-level cognitive tasks like reading and writing.

Purpose of the Study:

  • To investigate the independent contributions of verbal ability and domain-specific knowledge to writing skill.
  • To test whether high domain-specific knowledge reduces interference on secondary tasks, supporting the role of LTWM in text production.

Main Methods:

  • Experiment 1: College students (N=80) wrote baseball-related texts; their domain knowledge and verbal ability were assessed.
  • Experiment 2: The study replicated Experiment 1's findings and tested interference effects on a secondary task (N=42).

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Main Results:

  • Verbal ability and domain-specific knowledge independently influenced writing skill, challenging a key argument for the LTWM hypothesis.
  • Data supported the interference prediction, indicating that extensive domain knowledge lessened task interference, providing evidence for LTWM's role.

Conclusions:

  • Literacy appears to depend on both general knowledge sources and domain-specific expertise.
  • Long-term working memory (LTWM) likely plays a role in text production, particularly by mitigating cognitive load for domain experts.