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Jennifer A. Foley, Reiner Kaschel, Robert H. Logie, Sergio Della Sala, Dual-Task Performance in Alzheimer's Disease, Mild Cognitive Impairment, and Normal Ageing, Archives of Clinical Neuropsychology, Volume 26, Issue 4, June 2011, Pages 340–348, https://doi.org/10.1093/arclin/acr032
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Abstract
Although several studies have shown that dual-tasking ability is impaired in Alzheimer's disease (AD), the stage at which this deficit manifests remains unclear. This study investigated if a new paper-and-pencil assessment of dual-tasking ability could distinguish between AD, mild cognitive impairment (MCI) and normal ageing in a sample of 50 people with AD, 49 people with MCI, and 50 healthy age-matched controls. The AD group demonstrated a significant impairment in dual-task ability. There was no effect of either MCI or healthy ageing on dual-task performance, indicating that the dual-task impairment is specific to AD.