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Related Experiment Video

Updated: Mar 24, 2026

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

Aging in two languages: Implications for public health.

Ellen Bialystok¹, Jubin Abutalebi², Thomas H Bak³

¹Department of Psychology, York University, Canada.

Ageing Research Reviews

|March 20, 2016

Summary

Bilingualism in older adults can significantly protect cognitive function and delay dementia onset. This finding offers potential human and economic benefits for public health systems facing an aging population.

Keywords:

Alzheimer’s disease Bilingualism Cognitive aging Cognitive reserve Dementia Neuroplasticity

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Published on: January 11, 2020

Area of Science:

Cognitive Neuroscience
Public Health
Gerontology

Background:

Global population aging leads to increased dementia prevalence.
Dementia poses significant burdens on healthcare systems and societal resources.
Cognitive reserve is a key factor in mitigating dementia symptoms.

Purpose of the Study:

To review evidence on bilingualism's protective effects on cognitive function in aging.
To examine how bilingualism may delay the onset of dementia symptoms.
To assess the potential public health and economic implications of bilingualism in dementia prevention.

Main Methods:

Review of behavioral and brain imaging studies comparing monolingual and bilingual older adults.
Analysis of cognitive function measures in different language groups.
Examination of brain structure differences associated with bilingualism.
Synthesis of evidence on bilingualism's impact on dementia symptom onset.

Main Results:

Bilingualism is associated with enhanced cognitive function in older adults.
Evidence suggests bilingualism delays the clinical manifestation of dementia symptoms.
Studies show differences in brain structure and function between monolingual and bilingual individuals.

Conclusions:

Bilingualism acts as a protective factor for cognitive health in aging.
Promoting bilingualism could postpone dementia onset, reducing patient suffering.
Delaying dementia symptoms through bilingualism offers substantial public health cost savings.