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Feature integration and task switching: diminished switch costs after controlling for stimulus, response, and cue repetitions

James Schmidt (UGent) and Baptist Liefooghe (UGent)
(2016) PLOS ONE. 11(3).
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Abstract
This report presents data from two versions of the task switching procedure in which the separate influence of stimulus repetitions, response key repetitions, conceptual response repetitions, cue repetitions, task repetitions, and congruency are considered. Experiment 1 used a simple alternating runs procedure with parity judgments of digits and consonant/ vowel decisions of letters as the two tasks. Results revealed sizable effects of stimulus and response repetitions, and controlling for these effects reduced the switch cost. Experiment 2 was a cued version of the task switch paradigm with parity and magnitude judgments of digits as the two tasks. Results again revealed large effects of stimulus and response repetitions, in addition to cue repetition effects. Controlling for these effects again reduced the switch cost. Congruency did not interact with our novel "unbiased" measure of switch costs. We discuss how the task switch paradigm might be thought of as a more complex version of the feature integration paradigm and propose an episodic learning account of the effect. We further consider to what extent appeals to higher-order control processes might be unnecessary and propose that controls for feature integration biases should be standard practice in task switching experiments.
Keywords
CONFLICT ADAPTATION, OUTPUT MODALITY COMPATIBILITY, COGNITIVE-COMPLEXITY, PROPORTION CONGRUENT, CLEVER HOMUNCULUS, EXECUTIVE CONTROL, SHIFT COSTS, RETRIEVAL, SET, SELECTION

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Citation

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Chicago
Schmidt, James, and Baptist Liefooghe. 2016. “Feature Integration and Task Switching: Diminished Switch Costs After Controlling for Stimulus, Response, and Cue Repetitions.” Plos One 11 (3).
APA
Schmidt, J., & Liefooghe, B. (2016). Feature integration and task switching: diminished switch costs after controlling for stimulus, response, and cue repetitions. PLOS ONE, 11(3).
Vancouver
1.
Schmidt J, Liefooghe B. Feature integration and task switching: diminished switch costs after controlling for stimulus, response, and cue repetitions. PLOS ONE. 2016;11(3).
MLA
Schmidt, James, and Baptist Liefooghe. “Feature Integration and Task Switching: Diminished Switch Costs After Controlling for Stimulus, Response, and Cue Repetitions.” PLOS ONE 11.3 (2016): n. pag. Print.
@article{7144380,
  abstract     = {This report presents data from two versions of the task switching procedure in which the separate influence of stimulus repetitions, response key repetitions, conceptual response repetitions, cue repetitions, task repetitions, and congruency are considered. Experiment 1 used a simple alternating runs procedure with parity judgments of digits and consonant/ vowel decisions of letters as the two tasks. Results revealed sizable effects of stimulus and response repetitions, and controlling for these effects reduced the switch cost. Experiment 2 was a cued version of the task switch paradigm with parity and magnitude judgments of digits as the two tasks. Results again revealed large effects of stimulus and response repetitions, in addition to cue repetition effects. Controlling for these effects again reduced the switch cost. Congruency did not interact with our novel {\textacutedbl}unbiased{\textacutedbl} measure of switch costs. We discuss how the task switch paradigm might be thought of as a more complex version of the feature integration paradigm and propose an episodic learning account of the effect. We further consider to what extent appeals to higher-order control processes might be unnecessary and propose that controls for feature integration biases should be standard practice in task switching experiments.},
  articleno    = {e0151188},
  author       = {Schmidt, James and Liefooghe, Baptist},
  issn         = {1932-6203},
  journal      = {PLOS ONE},
  keyword      = {CONFLICT ADAPTATION,OUTPUT MODALITY COMPATIBILITY,COGNITIVE-COMPLEXITY,PROPORTION CONGRUENT,CLEVER HOMUNCULUS,EXECUTIVE CONTROL,SHIFT COSTS,RETRIEVAL,SET,SELECTION},
  language     = {eng},
  number       = {3},
  title        = {Feature integration and task switching: diminished switch costs after controlling for stimulus, response, and cue repetitions},
  url          = {http://dx.doi.org/10.1371/journal.pone.0151188},
  volume       = {11},
  year         = {2016},
}

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