The effect of language skills on dementia in a Swedish longitudinal cohort
2016 (English)In: Linguistic Approaches to Bilingualism, ISSN 1879-9264, E-ISSN 1879-9272, Vol. 6, no 1-2, 190-204 p.Article in journal (Refereed) Published
Recent findings indicate that bilingualism delay the onset of dementia. Using data from the Betula longitudinal cohort study on memory, health and aging (www.betula.su.se) the issue of a possible protective effect of bilingualism was addressed.
Monolingual (n = 736) and bilingual (n = 82) participants (≥ 60 years) without dementia at inclusion were followed for incident dementia over a time-period up to 10 years. In total, 112 participants developed dementia. Analyses were performed with Cox proportional hazards regression adjusted for age, sex, and presence/absence of the Apolipoprotein E (APOE) ɛ4 allele, with dementia outcome as the dependent variable.
Results showed no delayed onset of dementia in bilinguals compared to monolinguals. However, because of the findings from a study using participants from the same population showing beneficial longitudinal effects of bilingualism on episodic memory; we argue that our results may depend on the frequency of use of the second language after retirement.
Place, publisher, year, edition, pages
2016. Vol. 6, no 1-2, 190-204 p.
Bilingualism, Dementia, Longitudinal design, Aging, Cognitive reserve
IdentifiersURN: urn:nbn:se:umu:diva-110080DOI: 10.1075/lab.14031.ljuISI: 000375751500009OAI: oai:DiVA.org:umu-110080DiVA: diva2:861044
Special Issue: Aging and Bilingualism2015-10-152015-10-152016-06-16Bibliographically approved