title: Evidence accumulation in the integrated and primed Stroop tasks.
abstract: 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.
authors.affiliation: Department of Psychology, Macquarie University, Sydney, New South Wales, Australia. sachiko.kinoshita@mq.edu.au.|ARC Centre of Excellence in Cognition and its Disorders (CCD), Macquarie University, Sydney, New South Wales, Australia. sachiko.kinoshita@mq.edu.au.|Department of Psychology & CCD, Macquarie University, Sydney, NSW, 2109, Australia. sachiko.kinoshita@mq.edu.au.
authors.forename: Sachiko
authors.initials: S
authors.lastname: Kinoshita
authors.affiliation: ARC Centre of Excellence in Cognition and its Disorders (CCD), Macquarie University, Sydney, New South Wales, Australia.|Department of Cognitive Science, Macquarie University, Sydney, New South Wales, Australia.
authors.forename: Bianca
authors.initials: B
authors.lastname: de Wit
authors.affiliation: Department of Psychology, Macquarie University, Sydney, New South Wales, Australia.
authors.forename: Melissa
authors.initials: M
authors.lastname: Aji
authors.affiliation: MRC Cognition and Brain Sciences Unit, Cambridge, UK.
authors.forename: Dennis
authors.initials: D
authors.lastname: Norris
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D060865:Repetition Priming / Q000502:physiology*; D057190:Stroop Test; D055815:Young Adult
keywords: Automatic processing; Automaticity; Stroop effect