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Language specific dual-task effects after stroke: A systematic review

Lookup NU author(s): Dr Christos Salis, Rawand Jarrar


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Purpose: The dual-task paradigm has been frequently used to examine stroke-related deficits because it samples behavioural performance under conditions of distraction similar to functioning in real-life environments. This original systematic review synthesizes of studies that examined dual-task effects involving spoken language production in adults affected by stroke, including transient ischaemic attack (TIA) and post-stroke aphasia. Method: Five databases were searched (inception to March 2022) for eligible peer-reviewed articles. The 21 included studies reported a total of 561 stroke participants. Thirteen studies focused on single word production, e.g., word fluency, and eight on discourse production, e.g., storytelling. Most studies included participants who had suffered a major stroke. Six studies focused on aphasia, whereas no study focused on TIA. A meta-analysis was not appropriate because of the heterogeneity of outcome measures. Results: Some single word production studies found dual-task language effects whereas others did not. This finding was compounded by the lack of appropriate control participants. Most single word and discourse studies utilised motoric tasks in the dual-task condition. Our certainty (or confidence) assessment was based on a methodological appraisal of each study and information about reliability/fidelity. As 10 of the 21 studies included appropriate control groups and limited reliability/fidelity information, the certainty of the findings may be described as weak. Conclusions: Language-specific dual-task costs were identified in single word studies, especially those that focused on aphasia as well as half of the non-aphasia studies. Unlike single word studies, nearly all studies of discourse showed dual-task decrements on at least some variables.

Publication metadata

Author(s): Salis C, Jarrar R, Murray L

Publication type: Article

Publication status: Published

Journal: Journal of Speech, Language, and Hearing Research

Year: 2023

Volume: 66

Issue: 8

Pages: 2858-2883

Print publication date: 01/08/2023

Online publication date: 07/07/2023

Acceptance date: 11/04/2023

ISSN (print): 1092-4388

ISSN (electronic): 1558-9102

Publisher: American Speech-Language-Hearing Association


DOI: 10.1044/2023_JSLHR-23-00006

PubMed id: 37418751


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