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Involvement of short-term memory in complex mental calculation.

M P Noël1, M Désert, A Aubrun

  • 1Cognitive Neuropsychological Department, Faculté de Psychologie, Catholic University of Louvain, Louvain-le-Neuve, Belgium. noel@neco.ucl.ac.be

Memory & Cognition
|March 30, 2001
PubMed
Summary

This study found that phonological similarity, not visual similarity, significantly impacts mental addition speed and accuracy. This suggests the phonological loop is crucial for storing numbers during complex addition tasks.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory

Background:

  • Short-term memory is essential for cognitive tasks.
  • The phonological loop and visual-spatial sketch pad are key components of working memory.

Purpose of the Study:

  • To investigate the role of short-term memory in mental addition.
  • To determine whether phonological or visual similarity of numbers affects addition performance.

Main Methods:

  • Participants performed mental addition tasks.
  • The phonological and visual similarity of the addends were manipulated.
  • Task performance was measured by speed and accuracy.

Main Results:

  • Phonological similarity significantly affected both speed and accuracy in mental addition.

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  • Visual similarity of the numbers did not have a measurable impact on performance.
  • Results suggest preferential use of the phonological loop for number storage.

    • Conclusions:

    • The phonological loop plays a critical role in the temporary storage of addends during mental addition.
    • The findings provide insights into the internal coding mechanisms used in numerical cognition.