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Related Experiment Videos

Individual differences in working memory capacity predict learned control over attentional capture.

Matthew K Robison1, Nash Unsworth1

  • 1Department of Psychology, University of Oregon.

Journal of Experimental Psychology. Human Perception and Performance
|April 14, 2017
PubMed
Summary
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Working memory capacity (WMC) influences attentional capture in visual search, but only when multiple search modes are available. Greater WMC predicts reduced attentional capture when both feature and singleton detection search modes are employed.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Attention Studies

Background:

  • Individual differences in working memory capacity (WMC) often predict attentional capture susceptibility across tasks.
  • However, WMC-WMC's predictive power for attentional capture in visual search tasks is inconsistent.
  • Search modes may influence the relationship between WMC and attentional capture.

Purpose of the Study:

  • To investigate how available search modes modulate the relationship between WMC and attentional capture in visual search.
  • To determine if WMC predicts attentional capture differently under single versus multiple search mode conditions.

Main Methods:

  • Experiment 1: Assessed WMC and attentional capture using a singleton-detection search mode.
  • Experiment 2: Assessed WMC and attentional capture using both feature-search and singleton-detection modes.

Related Experiment Videos

  • Statistical analyses examined the correlation between WMC and attentional capture effects under different search mode conditions.
  • Main Results:

    • In Experiment 1 (singleton-detection only), WMC was not related to attentional capture.
    • In Experiment 2 (feature-search and singleton-detection available), higher WMC predicted significantly smaller attentional capture effects.
    • This WMC-attentional capture relationship was independent of attention control, suggesting a role for long-term memory differences.

    Conclusions:

    • The relationship between WMC and attentional capture in visual search is contingent on the available search modes.
    • Multiple search modes amplify the influence of WMC on attentional capture, potentially via long-term memory mechanisms.
    • Findings highlight the complex interplay between working memory, attention, and search strategies.