Selective reinforcement of conflict processing in the Stroop task.

Motivation signals have been shown to influence the engagement of cognitive control processes. However, most studies focus on the invigorating effect of reward prospect, rather than the reinforcing effect of reward feedback. The present study aimed to test whether people strategically adapt conflict...

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Main Authors: Arthur Prével, Ruth M Krebs, Nanne Kukkonen, Senne Braem
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2021-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0255430
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author Arthur Prével
Ruth M Krebs
Nanne Kukkonen
Senne Braem
author_facet Arthur Prével
Ruth M Krebs
Nanne Kukkonen
Senne Braem
author_sort Arthur Prével
collection DOAJ
description Motivation signals have been shown to influence the engagement of cognitive control processes. However, most studies focus on the invigorating effect of reward prospect, rather than the reinforcing effect of reward feedback. The present study aimed to test whether people strategically adapt conflict processing when confronted with condition-specific congruency-reward contingencies in a manual Stroop task. Results show that the size of the Stroop effect can be affected by selectively rewarding responses following incongruent versus congruent trials. However, our findings also suggest important boundary conditions. Our first two experiments only show a modulation of the Stroop effect in the first half of the experimental blocks, possibly due to our adaptive threshold procedure demotivating adaptive behavior over time. The third experiment showed an overall modulation of the Stroop effect, but did not find evidence for a similar modulation on test items, leaving open whether this effect generalizes to the congruency conditions, or is stimulus-specific. More generally, our results are consistent with computational models of cognitive control and support contemporary learning perspectives on cognitive control. The findings also offer new guidelines and directions for future investigations on the selective reinforcement of cognitive control processes.
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spelling doaj.art-c46da60cf9eb42198866e6f452e3ffd72022-12-21T22:42:04ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01167e025543010.1371/journal.pone.0255430Selective reinforcement of conflict processing in the Stroop task.Arthur PrévelRuth M KrebsNanne KukkonenSenne BraemMotivation signals have been shown to influence the engagement of cognitive control processes. However, most studies focus on the invigorating effect of reward prospect, rather than the reinforcing effect of reward feedback. The present study aimed to test whether people strategically adapt conflict processing when confronted with condition-specific congruency-reward contingencies in a manual Stroop task. Results show that the size of the Stroop effect can be affected by selectively rewarding responses following incongruent versus congruent trials. However, our findings also suggest important boundary conditions. Our first two experiments only show a modulation of the Stroop effect in the first half of the experimental blocks, possibly due to our adaptive threshold procedure demotivating adaptive behavior over time. The third experiment showed an overall modulation of the Stroop effect, but did not find evidence for a similar modulation on test items, leaving open whether this effect generalizes to the congruency conditions, or is stimulus-specific. More generally, our results are consistent with computational models of cognitive control and support contemporary learning perspectives on cognitive control. The findings also offer new guidelines and directions for future investigations on the selective reinforcement of cognitive control processes.https://doi.org/10.1371/journal.pone.0255430
spellingShingle Arthur Prével
Ruth M Krebs
Nanne Kukkonen
Senne Braem
Selective reinforcement of conflict processing in the Stroop task.
PLoS ONE
title Selective reinforcement of conflict processing in the Stroop task.
title_full Selective reinforcement of conflict processing in the Stroop task.
title_fullStr Selective reinforcement of conflict processing in the Stroop task.
title_full_unstemmed Selective reinforcement of conflict processing in the Stroop task.
title_short Selective reinforcement of conflict processing in the Stroop task.
title_sort selective reinforcement of conflict processing in the stroop task
url https://doi.org/10.1371/journal.pone.0255430
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