» Articles » PMID: 24146892

Training Reveals the Sources of Stroop and Flanker Interference Effects

Overview
Journal PLoS One
Date 2013 Oct 23
PMID 24146892
Citations 10
Authors
Affiliations
Soon will be listed here.
Abstract

In the field of cognitive control, dimensional overlap and pathway automaticity are generally believed to be critical for the generation of congruency effects. However, their specific roles in the generation of congruency effects are unclear. In two experiments, with the 4:2 mapping design, we investigated this issue by examining the training-related effects on congruency effects (the Stroop interference effect and the Flanker interference effect in Experiments 1 and 2, respectively) normally expressed as incongruent minus congruent difference and on their subcomponents (the stimulus interference and response interference). Experiment 1 revealed that the stimulus interference in the Stroop task, wherein the task-relevant (printed color of word) and the task-irrelevant (semantics of word) dimensions of the stimuli were processed in different pathways, was present during early training but was virtually eliminated at the late stage of training. This indicates that the two dimensions overlap at the early stage but separate at the late stage. In contrast, Experiment 2 showed that the response interference in a variant of the Flanker task, wherein the task-relevant (central color word printed in black font) and the task-irrelevant (flanking color words printed in black font) dimensions of the stimuli were processed in the same pathway, was enhanced after training. This indicates that the enhanced automaticity of irrelevant-dimension processing induces stronger response competition, which therefore results in the larger response interference. Taken together, the present study demonstrates that (1) dimensional overlap is necessary for the generation of congruency effects, (2) pathway automaticity can affect the size of congruency effects, and (3) training enhances the degree of automatic processing in a given pathway.

Citing Articles

Practice makes better? The influence of increased practice on task conflict in the Stroop task.

Najenson J, Zaks-Ohayon R, Tzelgov J, Fresco N Mem Cognit. 2025; .

PMID: 39863745 DOI: 10.3758/s13421-024-01677-7.


Distributional analyses reveal the individual differences in congruency sequence effect.

Tang D, Chen X, Li H, Lei Y PLoS One. 2022; 17(8):e0272621.

PMID: 35994475 PMC: 9394795. DOI: 10.1371/journal.pone.0272621.


Making a saccade enhances Stroop and Simon conflict control.

Luo X, Gu J, Zheng Y, Zhou X Atten Percept Psychophys. 2022; 84(3):795-814.

PMID: 35304699 DOI: 10.3758/s13414-022-02458-7.


The loci of Stroop effects: a critical review of methods and evidence for levels of processing contributing to color-word Stroop effects and the implications for the loci of attentional selection.

Parris B, Hasshim N, Wadsley M, Augustinova M, Ferrand L Psychol Res. 2021; 86(4):1029-1053.

PMID: 34389901 PMC: 9090875. DOI: 10.1007/s00426-021-01554-x.


Preserved sensory processing but hampered conflict detection when stimulus input is task-irrelevant.

Nuiten S, Canales-Johnson A, Beerendonk L, Nanuashvili N, Fahrenfort J, Bekinschtein T Elife. 2021; 10.

PMID: 34121657 PMC: 8294845. DOI: 10.7554/eLife.64431.


References
1.
Macleod C . Training on integrated versus separated Stroop tasks: the progression of interference and facilitation. Mem Cognit. 1998; 26(2):201-11. DOI: 10.3758/bf03201133. View

2.
Kornblum S, Hasbroucq T, Osman A . Dimensional overlap: cognitive basis for stimulus-response compatibility--a model and taxonomy. Psychol Rev. 1990; 97(2):253-70. DOI: 10.1037/0033-295x.97.2.253. View

3.
THEIOS J, Amrhein P . Theoretical analysis of the cognitive processing of lexical and pictorial stimuli: reading, naming, and visual and conceptual comparisons. Psychol Rev. 1989; 96(1):5-24. DOI: 10.1037/0033-295x.96.1.5. View

4.
Cohen J, Dunbar K, McClelland J . On the control of automatic processes: a parallel distributed processing account of the Stroop effect. Psychol Rev. 1990; 97(3):332-61. DOI: 10.1037/0033-295x.97.3.332. View

5.
van Veen V, Carter C . Separating semantic conflict and response conflict in the Stroop task: a functional MRI study. Neuroimage. 2005; 27(3):497-504. DOI: 10.1016/j.neuroimage.2005.04.042. View