Traditional measures assessing global ADLs may not be sensitive to early functional changes related to MCI; however, error-based measures may capture the subtle evolving functional decline associated with MCI. Among MCI participants, early functional difficulties are associated with verbal learning performance, possibly secondary to the hallmark cognitive impairment associated with this cohort.
The findings suggest that many individuals with MCI perform differently on a measure of decisional capacity than their NC peers and that participants with MCI who are incapable of providing informed consent on a hypothetical and complex clinical trial are less educated. These findings are consistent with prior studies documenting functional and financial skill difficulties in individuals with MCI.
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