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Article

Lexical and Cognitive Underpinnings of Verbal Fluency: Evidence from Bengali-English Bilingual Aphasia

1
School of Psychology and Clinical Language Sciences, University of Reading, Reading RG6 7BE, UK
2
Moss Rehabilitation Research Institute, Elkins Park, PA 19027, USA
3
Department of Linguistics, University of Konstanz, D-78457 Konstanz, Germany
*
Authors to whom correspondence should be addressed.
Behav. Sci. 2020, 10(10), 155; https://doi.org/10.3390/bs10100155
Received: 11 September 2020 / Revised: 1 October 2020 / Accepted: 3 October 2020 / Published: 8 October 2020
(This article belongs to the Special Issue Bilingual Aphasia)
Research in bilingual healthy controls (BHC) has illustrated that detailed characterization of verbal fluency along with separate measures of executive control stand to inform our understanding of the lexical and cognitive underpinnings of the task. Such data are currently lacking in bilinguals with aphasia (BWA). We aimed to compare the characteristics of verbal fluency performance (semantic, letter) in Bengali–English BWA and BHC, in terms of cross-linguistic differences, variation on the parameters of bilingualism, and cognitive underpinnings. BWA showed significant differences on verbal fluency variables where executive control demands were higher (fluency difference score, number of switches, between-cluster pauses); whilst performed similarly on variables where executive control demands were lower (cluster size, within-cluster pauses). Despite clear cross-linguistic advantage in Bengali for BHC, no cross-linguistic differences were noted in BWA. BWA who were most affected in the independent executive control measures also showed greater impairment in letter fluency condition. Correlation analyses revealed a significant relationship for BWA between inhibitory control and number of correct responses, initial retrieval time, and number of switches. This research contributes to the debate of underlying mechanisms of word retrieval deficits in aphasia, and adds to the nascent literature of BWA in South Asian languages. View Full-Text
Keywords: aphasia; bengali; bilingual; executive control; inhibition; cluster; switches; semantic fluency; letter fluency; timing aphasia; bengali; bilingual; executive control; inhibition; cluster; switches; semantic fluency; letter fluency; timing
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MDPI and ACS Style

Patra, A.; Bose, A.; Marinis, T. Lexical and Cognitive Underpinnings of Verbal Fluency: Evidence from Bengali-English Bilingual Aphasia. Behav. Sci. 2020, 10, 155. https://doi.org/10.3390/bs10100155

AMA Style

Patra A, Bose A, Marinis T. Lexical and Cognitive Underpinnings of Verbal Fluency: Evidence from Bengali-English Bilingual Aphasia. Behavioral Sciences. 2020; 10(10):155. https://doi.org/10.3390/bs10100155

Chicago/Turabian Style

Patra, Abhijeet, Arpita Bose, and Theodoros Marinis. 2020. "Lexical and Cognitive Underpinnings of Verbal Fluency: Evidence from Bengali-English Bilingual Aphasia" Behavioral Sciences 10, no. 10: 155. https://doi.org/10.3390/bs10100155

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