![]() ![]() One method relies on clinical judgment, rather than strict cutoff scores, to determine the likelihood that a participant's performance on a given test represents a decline from his or her premorbid level of functioning. To avoid such misclassifications, diagnostic methods need to account for premorbid functioning. 3Īn elderly person with low premorbid cognitive ability, and resultant low test scores, should not be classified as having developed MCI if his scores do not represent a substantial decline from his own baseline. ![]() 1, 2 In many studies, evidence of cognitive change from a premorbid level is inferred based on low test scores during a single cognitive screening it is not directly demonstrated by decline over multiple testing sessions. It also requires that the cognitive decline be insufficient to cause the functional deficits required for a diagnosis of dementia. Its diagnosis requires evidence suggestive of cognitive decline, by self or informant report, as well as by impaired performance on neuropsychological tests based on published norms or on changes in a given individual over time. Mild cognitive impairment (MCI) is a transitional clinical stage between normal aging and mild dementia. ![]()
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