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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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Related Experiment Video

Updated: Sep 2, 2025

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

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The locus of visual search's interference on visual working memory.

Zachary Hamblin-Frohman1

  • 1School of Psychology.

Journal of Experimental Psychology. Human Perception and Performance
|August 4, 2022
PubMed
Summary

Visual search interferes with visual working memory (VWM) primarily due to the attentional selection process. Adding nontarget items during visual search tasks significantly impairs VWM performance.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Perception

Background:

  • Visual attention and visual working memory (VWM) are interconnected cognitive systems.
  • Previous research focused on VWM's impact on visual search, but the bidirectional relationship is less understood.
  • Visual search tasks performed concurrently with VWM maintenance often result in reduced change detection accuracy.

Purpose of the Study:

  • To pinpoint the specific element within visual search that interferes with VWM.
  • To differentiate between attentional demands and procedural artifacts as sources of interference.
  • To investigate the role of attentional selection in VWM disruption during dual-task scenarios.

Main Methods:

  • Five experiments were conducted using a dual-task paradigm.
  • Participants performed attentional tasks during the retention interval of a change detection task.
  • Memory interference was quantified by measuring accuracy decrements compared to control conditions without an attentional task.

Main Results:

  • The presence of nontarget items within the attentional task was identified as a sufficient cause for VWM interference.
  • Procedural artifacts such as response bindings, eye movements, and spatial attention shifts were ruled out.
  • The time taken for the attentional task and perceptual load did not significantly contribute to interference.

Conclusions:

  • Interference between visual search and VWM stems from the attentional process of selecting a target among nontargets.
  • The findings highlight the critical role of selective attention in cognitive load and memory performance.
  • This research clarifies the mechanisms underlying dual-task interference in visual cognition.