Abstract
Introduction: Studies suggest bilingualism may delay behavioral manifestations of adverse cognitive aging including Alzheimer's dementia. Methods: Three thousand nine hundred sixty-three participants (unweighted mean population age ≈56 years) at Hispanic Community Health Study/Study of Latinos baseline (2008–2011) self-reported their and their parents’ birth outside the United States, Spanish as their first language, and used Spanish for baseline and comparable cognitive testing 7 years later (2015–2018). Spanish/English language proficiency and patterns of use were self-rated from 1 = only Spanish to 4 = English > Spanish. Cognitive testing included test-specific and global composite score(s) of verbal learning, memory, word fluency, and Digit Symbol Substitution (DSS). Survey linear regression models examined associations between baseline bilingualism scores and cognition. Results: Higher second-language (English) proficiency and use were associated with higher global cognition, fluency, and DSS at follow-up and better than predicted change in fluency. Discussion: The bilingual experience was more consistently related to 7-year level versus change in cognition for Hispanics/Latinos.
Original language | English (US) |
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Pages (from-to) | 875-883 |
Number of pages | 9 |
Journal | Alzheimer's and Dementia |
Volume | 19 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2023 |
Keywords
- Hispanic/Latino
- bilingualism
- cognitive change
- language proficiency
ASJC Scopus subject areas
- Epidemiology
- Health Policy
- Developmental Neuroscience
- Clinical Neurology
- Geriatrics and Gerontology
- Cellular and Molecular Neuroscience
- Psychiatry and Mental health