Examining the relation between bilingualism and age of symptom onset in frontotemporal dementia

Abstract Bilingualism is thought to confer advantages in executive functioning, thereby contributing cognitive reserve and a later age of dementia symptom onset. While the relation between bilingualism onset has been explored Alzheimer's dementia, there are few studies examining as contributor frontotemporal (FTD). In line with previous findings, we hypothesized that bilinguals behavioral variant FTD would be older at compared monolinguals, but no such effect found patients nonfluent/agrammatic primary progressive aphasia (PPA) or semantic PPA. Contrary our hypothesis, significant difference monolingual bilingual speakers within any variants, were notable differences on neuropsychological measures. Overall, results do not support protective FTD-spectrum disease U.S. based cohort.