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 journalArticle

4 Citations (Scopus)
6 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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