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Related Experiment Videos

Working-memory capacity as long-term memory activation: an individual-differences approach

J Cantor1, R W Engle

  • 1AT&T Bell Laboratories, Holmdel, New Jersey 07733-3030.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|September 1, 1993
PubMed
Summary
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Working-memory span influences reading comprehension by affecting how information is activated in long-term memory. Lower working-memory capacity leads to slower recognition, impacting verbal abilities.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory

Background:

  • A correlation exists between working-memory span and reading comprehension.
  • This correlation may be explained by differences in the activation levels of long-term memory units.

Purpose of the Study:

  • To investigate the role of long-term memory activation levels in the relationship between working-memory span and reading comprehension.
  • To test the hypothesis using the fan manipulation in two experiments.

Main Methods:

  • Experiment 1: Participants with high and low working-memory spans learned unrelated sentences with varying shared concepts (fan) and underwent speeded recognition.
  • Experiment 2: Participants learned thematically related sentences varying in fan.

Main Results:

Related Experiment Videos

  • Low-working-memory participants showed a greater increase in recognition time with increased fan.
  • Partialing out the fan effect significantly reduced the correlation between working-memory span and verbal abilities.
  • High-span participants exhibited a negative fan effect with thematically related sentences, unlike low-span participants.

Conclusions:

  • Individual differences in working-memory capacity impact the activation of information in long-term memory.
  • The fan effect and its modulation by sentence relatedness provide insights into general capacity theory.
  • Working-memory limitations may explain comprehension differences through inefficient memory retrieval processes.