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Updated: Jul 13, 2026

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Examining Bilingual Language Control Using the Stroop Task
Published on: February 26, 2020
Preliminary findings with a new Vietnamese Stroop test
1Department of Psychiatry, School of Medicine, University of California, San Diego, La Jolla 92093-0804, USA. nswerdlow@ucsd.edu
Perceptual and Motor Skills
|November 2, 1999
Summary
Vietnamese and English speakers showed similar Stroop task performance, but aging effects differed. This suggests potential cultural or neuropsychological influences on cognitive tasks.
Area of Science:
- Cognitive Psychology
- Neuropsychology
- Linguistic Studies
Background:
- The Stroop task is a widely used measure of executive function and selective attention.
- Bilingualism can influence cognitive processes, but its impact on Stroop performance across different linguistic groups requires further investigation.
- Understanding how language background affects cognitive performance is crucial for interpreting neuropsychological assessments.
Purpose of the Study:
- To compare Stroop task performance between primary Vietnamese speakers and primary English speakers living in the USA.
- To investigate the influence of age on Stroop performance in these two linguistic groups.
- To explore potential cultural or neuropsychological factors affecting cognitive performance in bilingual individuals.
Main Methods:
- A modified Vietnamese Stroop task was developed to mirror the structure of the English Stroop test.
- Stroop performance, including accuracy and interference cost, was measured in 30 Vietnamese Americans and 30 native English speakers.
- Participants' ages ranged from 19 to 68 years.
Main Results:
- No significant differences in overall Stroop performance were found between the Vietnamese-speaking and English-speaking groups.
- Age-related performance decrements were observed in the English Stroop task as expected.
- The Vietnamese Stroop task did not show expected age-related decrements; instead, a trend towards improved performance with age was noted.
Conclusions:
- Overall Stroop performance is comparable between primary Vietnamese and English speakers in the USA.
- Aging affects Stroop performance differently depending on the language of the task, suggesting language-specific cognitive or neural mechanisms.
- Discrepancies in age effects may indicate subtle task demands, cultural variations, or underlying neuropsychological differences between the groups.

