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Updated: Mar 29, 2026
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Examining Bilingual Language Control Using the Stroop Task
Published on: February 26, 2020
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Binocular Vision and the Stroop Test
1*MS(Neurosci) †DR IRIS Group, Physiopathologie de la Vision et Motricité Binoculaire, CNRS FR3636 Université Paris Descartes, Paris, France (both authors).
Summary
This study found that better convergence ability, a measure of binocular vision, is linked to improved performance on the Stroop test, indicating better executive function. This suggests vergence capacity may influence cognitive processes.
Area of Science:
- Optometry
- Neuroscience
- Cognitive Psychology
Background:
- Emerging research suggests a connection between optometric findings, learning challenges, and reading difficulties.
- Binocular vision, encompassing vergence and accommodation, plays a crucial role in visual tasks.
Purpose of the Study:
- To investigate the relationship between optometric measures of binocular vision (vergence and accommodation).
- To examine correlations between reading speed and cognitive executive functions, specifically using the Stroop test.
Main Methods:
- Fifty-one students underwent comprehensive eye exams and performed the L'Alouette reading test and Stroop interference test.
- Participants were selected based on the absence of significant visual or neurological impairments.
Main Results:
- A correlation was observed between positive fusional vergences (PFVs) at near and the Stroop test's interference effect (IE); higher PFVs correlated with lower IE.
- Students with convergence insufficiency exhibited significantly higher IE on the Stroop test compared to those with normal binocular vision.
- No correlation was found between reading speed and PFV in any group.
Conclusions:
- This study provides novel evidence linking convergence capacity to Stroop test performance, suggesting a shared neural basis.
- Vergence control and cognitive functions may utilize overlapping cortical regions, such as parietofrontal areas.
- The findings support the hypothesis that vergence acts as a component of attentional and cognitive functions.
