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Managing Increased Cognitive Load in a Guided Search.

Josée Turcotte1, Bruce Oddson2

  • 1Faculty of Arts, 415316Laurentian University, Sudbury, ON, Canada.

Perceptual and Motor Skills
|March 22, 2022
PubMed
Summary
This summary is machine-generated.

Cognitive load, or task difficulty, may not always slow down memory search. Higher cognitive load in memory tasks can paradoxically lead to more efficient searching per item.

Keywords:
Sternberg’s taskcognitive loadmanagementmemoryworking memory

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Area of Science:

  • Cognitive Psychology
  • Human Memory
  • Experimental Psychology

Background:

  • The Sternberg item recognition task demonstrates that reaction time increases with memory set size.
  • Increased reaction time is also observed when a secondary task is introduced, typically attributed to higher cognitive load.
  • Traditional interpretations suggest cognitive load impedes task performance.

Purpose of the Study:

  • To investigate the effect of manipulated cognitive load on search performance in memory tasks.
  • To challenge the conventional understanding of cognitive load's impact on search efficiency.

Main Methods:

  • Three experiments manipulated cognitive load by varying memory set size and introducing a secondary working memory task.
  • Participants performed a Sternberg-like item recognition task under varying cognitive load conditions.
  • Response times and reaction time slopes relative to probe position were analyzed.

Main Results:

  • High cognitive load conditions showed increased mean response times but a reduced reaction time slope.
  • Participants exhibited more efficient search per probe under high load compared to low load.
  • This pattern persisted even with the addition of a complex working memory task.

Conclusions:

  • The findings challenge the traditional view that cognitive load solely increases task difficulty and impairs performance.
  • Increased cognitive load may enhance search efficiency per item under certain conditions.
  • A nuanced understanding of cognitive load effects, considering both response time and slope, is necessary.