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Everyday functioning in mild cognitive impairment and its relationship with executive cognition

✍ Scribed by Eleni Aretouli; Jason Brandt

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
219 KB
Volume
25
Category
Article
ISSN
0885-6230

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✦ Synopsis

Abstract

Objective

Elderly persons with mild cognitive impairment (MCI) are at increased risk of dementia and functional impairments. The present study investigated the contribution of three domains of executive cognition to everyday functioning among persons with MCI.

Methods

124 MCI patients and 68 cognitively normal elderly participants were administered a cognitive screening battery. These tests were used to divide patients into four subgroups (amnestic single domain, amnestic multiple domain, non‐amnestic single domain, and non‐amnestic multiple domain). Subjects were then administered 18 executive function tests that assess planning/problem‐solving, working memory, and judgment. Performance of everyday activities and everyday cognition was rated with two informant‐reported measures.

Results

All MCI subtypes had more difficulties in everyday activities than cognitively normal elderly participants. Multiple domain MCI patients had more functional impairments than single domain MCI patients. Contrary to our expectations, only one executive function component, working memory, contributed significantly to functional status after controlling for demographic, health‐related and other cognitive factors.

Conclusions

Functional abilities are compromised in all MCI subtypes. Working memory may be associated with functional impairments, but general cognitive measures account for more unique variance. Copyright © 2009 John Wiley & Sons, Ltd.

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