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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...
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Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
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Selection History Modulates Working Memory Capacity.

Bo-Cheng Kuo1

  • 1Department of Psychology, National Taiwan University Taipei, Taiwan.

Frontiers in Psychology
|October 25, 2016
PubMed
Summary
This summary is machine-generated.

Selection history impacts working memory (WM) capacity. A larger stimulus set size reduced WM capacity, especially with high cognitive load, demonstrating context-driven attention effects.

Keywords:
attentionlimited capacityselection historytop-down controlworking memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Attention Studies

Background:

  • Past selection history influences attention allocation during target selection.
  • The impact of context-driven selection history on working memory (WM) representations remains largely unexplored.

Purpose of the Study:

  • To investigate how selection history affects attention allocation within working memory.
  • To determine if context-driven selection history modulates working memory capacity.

Main Methods:

  • Participants held varying numbers of items (low vs. high load) in WM during a delayed response task.
  • Selection history was manipulated by varying stimulus set sizes within task contexts (fewer vs. more possible stimuli).
  • Working memory capacity was measured using the K measure.

Main Results:

  • Working memory capacity was significantly reduced in contexts with more possible stimuli compared to contexts with fewer stimuli.
  • This capacity reduction was pronounced under high working memory load conditions.
  • No significant capacity reduction was observed when participants focused on a single item.

Conclusions:

  • Context-driven selection history significantly influences working memory capacity.
  • Focused attention and the breadth of selection history interact to modulate working memory performance.
  • These findings highlight the dynamic interplay between attention, memory, and contextual factors.