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Selective reinforcement of conflict processing in the Stroop task.

Arthur Prével1, Ruth M Krebs1, Nanne Kukkonen1

  • 1Department of Experimental Psychology, Ghent University, Ghent, Belgium.

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People can strategically adjust cognitive control based on reward feedback. Rewarding specific responses in tasks like the Stroop task influences conflict processing, but this adaptation has limitations.

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Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Computational modeling

Background:

  • Motivation influences cognitive control, but research often overlooks reward feedback compared to reward anticipation.
  • Understanding how reward feedback shapes conflict processing is crucial for cognitive control theories.

Purpose of the Study:

  • To investigate strategic adaptation of conflict processing using condition-specific reward feedback.
  • To examine the impact of rewarding incongruent versus congruent trial responses in a manual Stroop task.

Main Methods:

  • Manual Stroop task with varied congruency-reward contingencies.
  • Experimental blocks with adaptive threshold procedures.
  • Analysis of Stroop effect modulation based on reward feedback.

Main Results:

  • Selective reward feedback modulated the Stroop effect size.
  • Adaptation was observed primarily in the initial phase of experiments.
  • Experiment 3 showed overall modulation but not on subsequent test items, indicating potential boundary conditions.

Conclusions:

  • Reward feedback can strategically influence cognitive control, aligning with learning perspectives.
  • Findings suggest limitations to adaptation, possibly due to experimental procedures.
  • Results provide a basis for future research on selective reinforcement of cognitive control.