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. 2015 Mar 1:35:113-124.
doi: 10.1016/j.dr.2014.12.003.

Bilingualism as a Model for Multitasking

Gregory J Poarch  1 , Ellen Bialystok  1
Affiliations

Bilingualism as a Model for Multitasking

Gregory J Poarch et al. Dev Rev. .

Abstract

Because both languages of bilinguals are constantly active, bilinguals need to manage attention to the target language and avoid interference from the non-target language. This process is likely carried out by recruiting the executive function (EF) system, a system that is also the basis for multitasking. In previous research, bilinguals have been shown to outperform monolinguals on tasks requiring EF, suggesting that the practice using EF for language management benefits performance in other tasks as well. The present study examined 203 children, 8-11 years old, who were monolingual, partially bilingual, bilingual, or trilingual performing a flanker task. Two results support the interpretation that bilingualism is related to multitasking. First, bilingual children outperformed monolinguals on the conflict trials in the flanker task, confirming previous results for a bilingual advantage in EF. Second, the inclusion of partial bilinguals and trilinguals set limits on the role of experience: partial bilingual performed similarly to monolinguals and trilinguals performed similarly to bilinguals, suggesting that degrees of experience are not well-calibrated to improvements in EF. Our conclusion is that the involvement of EF in bilingual language processing makes bilingualism a form of linguistic multitasking.

Keywords: attention; bilingualism; dual-task performance; executive functions; inhibition; monitoring; multitasking; task switching.

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