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Related Experiment Videos

Automaticity and word perception: evidence from Stroop and Stroop dilution effects

T L Brown1, L Roos-Gilbert, T H Carr

  • 1Department of Psychology, University of North Carolina at Asheville 28804-3299, USA.

Journal of Experimental Psychology. Learning, Memory, and Cognition
|November 1, 1995
PubMed
Summary

Adding neutral words halves the Stroop effect. Word recognition is involuntary and parallel, with effectiveness depending on input quality, not strictly serial processing.

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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Attention Studies

Background:

  • The Stroop effect demonstrates interference in reaction time when processing conflicting information.
  • Kahneman and Chajczyk's (1983) "attention capture" theory proposed serial word recognition.
  • Stroop dilution, where the effect is reduced, requires explanation.

Purpose of the Study:

  • To investigate the processing mechanisms underlying Stroop dilution.
  • To compare serial "attention capture" with parallel processing models.
  • To determine if word recognition operates serially or in parallel.

Main Methods:

  • Experimental manipulation of word displays to induce Stroop dilution.
  • Comparison of empirical results with predictions from serial and parallel processing models.

Related Experiment Videos

  • Analysis of lexical access and response selection stages.

    • Main Results:

    • Stroop effects were significantly reduced by the addition of neutral words.
    • Results supported a parallel processing model over a strictly serial one.
    • Multiple patterns are processed in parallel, with reduced input quality affecting lexical memory.

    Conclusions:

    • Word recognition is involuntary but operates in parallel on multiple input representations.
    • The effectiveness of lexical encoding depends on the quality of parallel input.
    • The "attention capture" model's serial assumption is challenged by parallel processing evidence.