Mixing costs in task shifting reflect sequential processing stages in a multicomponent task.

Memory & Cognition
Marco Steinhauser, Ronald Hübner

Abstract

We investigated the hypothesis that mixing costs intask shifting reflect th e sequential selection of task components (e.g., stimulus categories) during task execution. This proposition was supported by Hübner, Futterer, and Steinhauser (2001), who showed that the amount of mixing costsdepends on the number of mixed task components (e.g., stimulus level and judgment). However, their results could also be explained by a task set selection account, because task components and task sets were confounded. In Experiments 1 and 2, we compared conditions in which either the number of task sets varied and the number of mixed task components was constant or vice versa. Only the number of mixed task components was predictive for the mixing costs. In Experiment 3, we replicated the additivity of mixing costs from level a ndjudgment mixing. Our results suggest thatthe mixingcosts reflect a selection strategy in which interference is reduced in a stepwise manner.

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Citations

Apr 30, 2008·Psychological Research·Andrea M PhilippRicarda I Schubotz
Mar 2, 2011·Psychological Research·Tilo StrobachAndrea Kiesel
Jul 11, 2006·Journal of Experimental Psychology. Human Perception and Performance·Marco Steinhauser, Ronald Hübner
Feb 16, 2012·The Quarterly Journal of Experimental Psychology : QJEP·Alessandra da Silva SouzaMichel D Druey
May 31, 2007·Memory & Cognition·Marco Steinhauser, Ronald Hübner
Jan 16, 2007·Acta Psychologica·Einat Yehene, Nachshon Meiran
Mar 25, 2009·Cognition·Jérôme Sackur, Stanislas Dehaene
Dec 19, 2018·NeuroImage·Alodie Rey-MermetMarco Steinhauser

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