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Bilingualism, aging, and cognitive control: evidence from the Simon task.
Ellen Bialystok1, Fergus I M Craik, Raymond Klein
1Department of Psychology, York University, Toronto, ON, Canada. ellenb@yorku.ca
Psychology and Aging
|June 30, 2004
Summary
Bilingualism enhances cognitive control and executive functions in adults. This bilingual advantage is more pronounced in older adults, offsetting age-related cognitive decline.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Linguistics
Background:
- Bilingualism in children is linked to enhanced executive functions due to managing two languages.
- Previous research suggests bilingualism positively impacts cognitive control.
Purpose of the Study:
- To investigate if the bilingual advantage in cognitive control persists into adulthood.
- To determine if bilingualism mitigates age-related cognitive decline in older adults.
Main Methods:
- Three studies compared monolingual and bilingual middle-aged and older adults.
- Participants completed the Simon task, a measure of cognitive control.
- Performance was assessed based on Simon effect costs and reaction times.
Main Results:
- Bilinguals exhibited smaller Simon effect costs across both age groups.
- Bilingual participants showed faster responses under high working memory load.
- The bilingual advantage was significantly greater in older adults.
Conclusions:
- Bilingualism is associated with more effective controlled processing in adults.
- Bilingualism appears to offset age-related declines in executive functions, particularly in older individuals.