| Autor: |
Sidat SM; School of Psychology, University of Bedfordshire, Luton, UK., Giannakopoulou A; School of Psychology, University of Bedfordshire, Luton, UK., Hand CJ; School of Education, University of Glasgow, Glasgow, UK., Ingram J; Division of Psychology, University of the West of Scotland, Paisley, UK. |
| Jazyk: |
angličtina |
| Zdroj: |
Laterality [Laterality] 2023 Mar-May; Vol. 28 (2-3), pp. 73-95. Date of Electronic Publication: 2023 Feb 19. |
| DOI: |
10.1080/1357650X.2023.2178061 |
| Abstrakt: |
Evidence suggests that language processing in bilinguals is less left-lateralized than in monolinguals. We explored dual-task decrement (DTD) for mono-, bi- and multilinguals in a verbal-motor dual-task paradigm. We expected monolinguals to show greater DTD than bilingual participants, who would show greater DTD than multilingual participants. Fifty right-handed participants (18 monolingual, 16 bilingual, 16 multilingual) completed verbal fluency and manual motor tasks in isolation and concurrently. Tasks were completed twice in isolation (left-handed, right-handed) and twice as dual-tasks (left-handed, right-handed); participants' motor-executing hands served proxy for hemispheric activation. Results supported the hypotheses. Completing dual-tasks incurred greater cost for manual motor tasks than for verbal fluency tasks. Negative cost of performing dual-tasks diminished as number of languages spoken increased; in fact, multilingual individuals demonstrated a dual-task advantage in both tasks when using the right hand, strongest in the verbal task. Dual-tasking had the greatest negative impact on verbal fluency of monolingual participants when the motor task was completed with the right hand; for bi- and multi-lingual participants, the greatest negative impact on verbal fluency was seen when the motor task was completed with the left hand. Results provide support for the bi-lateralization of language function in bi- and multilingual individuals. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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