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Related Experiment Video

Updated: Nov 11, 2025

Examining Bilingual Language Control Using the Stroop Task

Examining Bilingual Language Control Using the Stroop Task

Published on: February 26, 2020

Bilingualism: Pathway to Cognitive Reserve.

Ellen Bialystok¹

¹Department of Psychology, York University, 4700 Keele Street, Toronto, ON, Canada M3J 1P3.

Trends in Cognitive Sciences

|March 27, 2021

Summary

Bilingualism enhances cognitive reserve, offering protection against cognitive decline and dementia symptoms. This study found bilingual individuals exhibit better cognitive function and slower disease progression compared to monolinguals.

Keywords:

bilingualism cognitive aging cognitive reserve dementia

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Area of Science:

Neuroscience
Cognitive Psychology
Gerontology

Background:

Cognitive reserve mitigates the impact of brain structure deterioration on cognitive function.
It is a key factor in maintaining cognitive abilities and preventing dementia.
Bilingualism is hypothesized to contribute to cognitive reserve.

Purpose of the Study:

To evaluate the evidence supporting bilingualism's contribution to cognitive reserve.
To compare cognitive function and dementia progression in bilinguals versus monolinguals.

Main Methods:

Review of evidence across four domains: healthy aging, dementia onset, clinical-neuropathological correlation, and cognitive decline rate.
Comparative analysis of bilinguals and monolinguals.

Main Results:

Bilinguals consistently demonstrated patterns indicative of cognitive reserve.
Evidence supports bilingualism's protective effect in healthy aging and dementia.
Bilingualism is associated with a later onset of dementia symptoms and slower cognitive decline.

Conclusions:

Bilingualism significantly contributes to cognitive reserve.
It offers a protective mechanism against cognitive decline and dementia.
Findings support bilingualism as a strategy for cognitive health in aging populations.