Cognitive control and schizophrenia: The greatest reliability of the Stroop task

2015 ◽  
Vol 227 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Charlotte Laurenson ◽  
Philip Gorwood ◽  
Manuel Orsat ◽  
Jean-Paul Lhuillier ◽  
Didier Le Gall ◽  
...  
2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Albert Lehr ◽  
Niklas Henneberg ◽  
Tarana Nigam ◽  
Walter Paulus ◽  
Andrea Antal

Behavioral response conflict arises in the color-word Stroop task and triggers the cognitive control network. Midfrontal theta-band oscillations correlate with adaptive control mechanisms during and after conflict resolution. In order to prove causality, in two experiments, we applied transcranial alternating current stimulation (tACS) at 6 Hz to the dorsolateral prefrontal cortex (DLPFC) during Stroop task performance. Sham stimulation served as a control in both experiments; 9.7 Hz tACS served as a nonharmonic alpha band control in the second experiment. We employed generalized linear mixed models for analysis of behavioral data. Accuracy remained unchanged by any type of active stimulation. Over both experiments, the Stroop effect (response time difference between congruent and incongruent trials) was reduced by 6 Hz stimulation as compared to sham, mainly in trials without prior conflict adaptation. Alpha tACS did not modify the Stroop effect. Theta tACS can both reduce the Stroop effect and modulate adaptive mechanisms of the cognitive control network, suggesting midfrontal theta oscillations as causally involved in cognitive control.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Sensen Song ◽  
Anna Zilverstand ◽  
Hongwen Song ◽  
Federico d’Oleire Uquillas ◽  
Yongming Wang ◽  
...  

2013 ◽  
Vol 17 (3) ◽  
pp. 610-629 ◽  
Author(s):  
HENRIKE K. BLUMENFELD ◽  
VIORICA MARIAN

Bilinguals have been shown to outperform monolinguals at suppressing task-irrelevant information and on overall speed during cognitive control tasks. Here, monolinguals’ and bilinguals’ performance was compared on two nonlinguistic tasks: a Stroop task (with perceptualStimulus–Stimulus conflictamong stimulus features) and a Simon task (withStimulus–Response conflict). Across two experiments testing bilinguals with different language profiles, bilinguals showed more efficient Stroop than Simon performance, relative to monolinguals, who showed fewer differences across the two tasks. Findings suggest that bilingualism may engage Stroop-type cognitive control mechanisms more than Simon-type mechanisms, likely due to increased Stimulus–Stimulus conflict during bilingual language processing. Findings are discussed in light of previous research on bilingual Stroop and Simon performance.


PLoS ONE ◽  
2017 ◽  
Vol 12 (10) ◽  
pp. e0187254 ◽  
Author(s):  
Matthew Sachs ◽  
Jonas Kaplan ◽  
Alissa Der Sarkissian ◽  
Assal Habibi

2020 ◽  
Vol 73 (9) ◽  
pp. 1444-1459 ◽  
Author(s):  
Julie M Bugg ◽  
Corentin Gonthier

Current theories posit multiple levels of cognitive control for resolving conflict, including list-level control: the global or proactive biasing of attention across a list of trials. However, to date, evidence for pure list-level control has largely been confined to the Stroop task. Our goals were twofold: (a) test the generality of theoretical accounts by seeking evidence for list-level control in the letter flanker task, using an established method involving diagnostic items, and investigating the conditions under which list-level control may and may not be observed and (b) develop and test a potential solution to the challenge of isolating list-level control in tasks with a relatively limited set of stimuli and responses such as arrow flanker. Our key findings were that list-level control was observed for the first time in a letter flanker task on diagnostic items (Experiment 1), and it was not observed when the design was altered to encourage learning and use of simple stimulus–response associations (Experiment 2). These findings support the generalisability of current theoretical accounts positing dual-mechanisms or multiple levels of control, and the associations as antagonists to control account positing that list-level control may be a last resort, to conflict tasks besides Stroop. List-level control was also observed in the arrow flanker task using a modified design (Experiment 3), which could be extended to other conflict tasks with limited sets of stimuli (four or fewer), although this solution is not entirely free of confounds.


2021 ◽  
Author(s):  
Arthur Prével ◽  
Ruth Krebs ◽  
Nanne Kukkonen ◽  
Senne Braem

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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