The importance of irrelevant-dimension variability in the Stroop flanker task

Sharon Morein-Zamir, Avishai Henik, Idit Spitzer-Davidson

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Two experiments in which the Stroop flanker task was used were conducted in order to examine the influence of irrelevant dimension invariance on congruency effects. Participants responded manually to a central color patch flanked by a Stroop stimulus. In Experiment 1, invariance in flanker location was found to have no influence on word and color congruency effects. In contrast, invariance of flanker identity led to the disappearance of congruency effects. Experiment 2 indicated that the elimination of a congruency effect was restricted to the dimension that remained constant and did not influence the congruency effect of the other dimension that was presented at the same location. Results suggest that variance is a prerequisite to congruity effects, determining the activation of irrelevant dimensions.

Original languageEnglish
Pages (from-to)119-125
Number of pages7
JournalPsychonomic Bulletin and Review
Issue number1
StatePublished - 1 Jan 2002

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)


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