Evidence accumulation in the integrated and primed Stroop tasks

Sachiko Kinoshita*, Bianca de Wit, Melissa Aji, Dennis Norris

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)
    31 Downloads (Pure)


    We report distributional analyses of response times (RT) in two variants of the color-word Stroop task using manual keypress responses. In the classic Stroop task, in which the color and word dimensions are integrated into a single stimulus, the Stroop congruence effect increased across the quantiles. In contrast, in the primed Stroop task, in which the distractor word is presented ahead of colored symbols, the Stroop congruence effect was manifested solely as a distributional shift, remaining constant across the quantiles. The distributional-shift pattern mirrors the semantic-priming effect that has been reported in semantic categorization tasks. The results are interpreted within the framework of evidence accumulation, and implications for the roles of task conflict and informational conflict are discussed.

    Original languageEnglish
    Pages (from-to)824-836
    Number of pages13
    JournalMemory and Cognition
    Issue number5
    Publication statusPublished - Jul 2017

    Bibliographical note

    Copyright the Author(s) 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


    • Automatic processing
    • Automaticity
    • Stroop effect


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