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Examining Bilingual Language Control Using the Stroop Task
Published on: February 26, 2020
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Losing control: Mostly incongruent lists postpone, but do not eliminate, the Stroop effect
Jason Ivanoff1, Nicole E Webb2, Harjot Chahal2
1Department of Psychology, Saint Mary's University, Halifax, B3H 3C3, Nova Scotia, Canada. Jason.Ivanoff@smu.ca.
Attention, Perception & Psychophysics
|March 10, 2018
Summary
The Stroop effect, measuring word-color pathway interference, is reduced by mostly incongruent trials. This suggests strategic control is temporary and effortful, especially when response is constrained.
Area of Science:
- Cognitive Psychology
- Neuroscience
Background:
- The Stroop effect demonstrates interference between word and color processing.
- Trial frequency (congruent vs. incongruent) influences Stroop effect magnitude.
- Strategic control of word pathways is a proposed mechanism for reducing interference.
Purpose of the Study:
- Investigate the temporal dynamics of the Stroop effect.
- Examine how trial congruency frequency impacts cognitive control mechanisms.
- Differentiate the effects of congruency on response rate versus response accuracy.
Main Methods:
- Utilized speed-accuracy tradeoff functions (SATfs).
- Compared performance across three trial conditions: 50% congruent, mostly congruent (MC), and mostly incongruent (MI).
Main Results:
- In MC and 50% congruent conditions, color-word congruency impacted the SATf rate parameter.
- In the MI condition, congruency primarily affected the SATf asymptote.
- This dissociation suggests different control mechanisms are engaged based on trial frequency.
Conclusions:
- Strategic control of the word pathway is effortful and temporary.
- Control mechanisms adapt based on the expected frequency of interference.
- Cognitive control may falter under sustained response demands, particularly in MI contexts.
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