Preparation time modulates pro-active control and enhances task conflict in task switching

Eyal Kalanthroff, Avishai Henik

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Performance in the Stroop task reflects two conflicts-informational (between the incongruent word and ink color) and task (between relevant color naming and irrelevant word reading). Neuroimaging findings support the existence of task conflict in congruent trials. A behavioral indication for task conflict-Stroop reverse facilitation-was found in previous studies under low task-control conditions. Task switching also causes reduction in task control because the task set frequently changes. We hypothesized that it would be harder to efficiently manage task conflicts in switching situations and, specifically, as cue-target interval (CTI) decreases. This suggestion was examined in two experiments using a combined Stroop task-switching design. We found a large interference effect and reverse facilitation that decreased with elongation of CTI. Results imply that task switching reduces pro-active task control and thereby enhances the informational and the task conflicts. This calls for a revision of recent control models to include task conflict.

Original languageEnglish
Pages (from-to)276-288
Number of pages13
JournalPsychological Research
Volume78
Issue number2
DOIs
StatePublished - 1 Mar 2014

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Preparation time modulates pro-active control and enhances task conflict in task switching'. Together they form a unique fingerprint.

Cite this