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A color-digit Stroop task shows numerical influence on numerosity processing.

Ronen Hershman1,2, Lisa Beckmann3, Eldad Keha4,5

  • 1Department of Psychology and The Zelman Center for Brain Science, Ben-Gurion University of the Negev, Beer-Sheva, Israel. ronen.hershman@uibk.ac.at.

Memory & Cognition
|September 11, 2024
PubMed
Summary
This summary is machine-generated.

Symbolic number processing automatically influences how we perceive quantity. This study demonstrates that number value interferes with or facilitates color-counting tasks, highlighting automaticity in numerical cognition.

Keywords:
Cognitive controlNumerical cognitionNumerosityStroop effect

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Numerical Cognition

Background:

  • The numerical Stroop task reveals automaticity in numerical processing, where participants struggle to ignore irrelevant numerical dimensions.
  • Prior research indicates that symbolic number processing is highly automatic and influences other cognitive tasks.

Purpose of the Study:

  • To investigate the automatic influence of symbolic numerical value on the processing of visual numerosity.
  • To explore how number processing interacts with visual perception in a novel Stroop-like paradigm.

Main Methods:

  • Two experiments were conducted using a Stroop-like task where digits composed of colored stripes were presented.
  • Participants were instructed to identify the number of distinct colors, while the numerical value of the digits served as a potential distractor.
  • Interference and facilitation effects were measured to assess the automatic influence of numerical value.

Main Results:

  • Significant interference and facilitation effects were observed, demonstrating that the numerical value of digits automatically influenced color-numerosity judgments.
  • These findings support the automatic nature of symbolic number processing and its pervasive impact on other perceptual tasks.

Conclusions:

  • Symbolic number processing is automatic and influences the perception of visual quantities (numerosity).
  • The results extend previous findings on numerical and counting Stroop tasks.
  • This research has implications for understanding numerical interference and basic numerical processing in diverse populations, including children and clinical groups.