A Case Study Investigating Executive Control Impairment in Fluent Bilingual Aphasia

Kiss, Annamária and Csépe, Valéria (2024) A Case Study Investigating Executive Control Impairment in Fluent Bilingual Aphasia. ALKALMAZOTT NYELVTUDOMÁNY, 24 (2). pp. 133-159. ISSN 1587-1061

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Abstract

The current literature on bilingual aphasia is limited, especially in investigating non-linguistic executive control (EC) impairment. Most studies suggest an EC deficit in bilingual aphasics known as bilingual People With Aphasia (bPWA). We used both linguistic and neuropsychological assessments, including the Bilingual Aphasia Test, Boston Naming Test, Rey Complex Figure B Test, Verbal Working Memory Test, and a Visual Working Memory Test, to evaluate EC impairments and to examine comprehension, fluency, and naming. We examined two bilingual (L1 Croatian- L2 Hungarian) post-stroke aphasics, both females over 70 years of age. They were diagnosed with anomic aphasia in the chronic phase. We compared their performance with a reference group consisting of 11 neurologically healthy elderly Croatian-Hungarian bilinguals. All participants were tested individually in several sessions. The results suggest moderate impairment in fluency and naming and mild impairment in working memory of the bPWA patients investigated. This study highlights the importance of investigating executive control deficits and their potential association with language performance in bPWA. These findings contribute to our understanding of the less explored domain of executive control in bilingual individuals with aphasia. Keywords: bilingual aphasia, executive control, working memory, anomia, fluency

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