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Related Concept Videos

Working Memory01:24

Working Memory

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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...
134

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Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
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Which "working memory" are we talking about? Complex span tasks versus N-back.

Alexander P Burgoyne1,2, David J Frank3, Brooke N Macnamara4,5

  • 1Human Resources Research Organization (HumRRO), Alexandria, VA, 22314, USA. burgoyn4@gmail.com.

Psychonomic Bulletin & Review
|December 5, 2024
PubMed
Summary
This summary is machine-generated.

Complex span and n-back tasks measure working memory differently. Updating tasks, emphasizing disengagement from old information, show stronger links to fluid intelligence than working memory capacity tasks.

Keywords:
DisengagementFluid intelligenceMaintenanceUpdatingWorking memory capacity

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • Complex span and n-back tasks are commonly used to assess working memory capacity.
  • Evidence regarding the convergent validity of these tasks is inconsistent.
  • This inconsistency impacts interpretations in various psychological research fields.

Purpose of the Study:

  • To investigate the convergent validity between complex span and n-back tasks.
  • To examine the dissociation between working memory capacity and updating constructs.
  • To explore the relationship of these constructs with fluid intelligence.

Main Methods:

  • Recruited a large, diverse sample (N=1,272) across multiple sites.
  • Administered various working memory capacity, updating, and fluid intelligence tests.
  • Analyzed correlations at both observed and latent levels.

Main Results:

  • Found strong evidence for a dissociation between complex span and n-back tasks.
  • Observed modest correlations (r̄=.25) between complex span and n-back performance.
  • Identified unique variance in fluid intelligence explained by each task type, with updating measures showing stronger relations.

Conclusions:

  • Complex span and n-back tasks measure distinct aspects of cognition.
  • Working memory capacity and updating are dissociable factors.
  • Researchers should not use complex span and n-back tasks interchangeably for measuring working memory capacity or updating.