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Original Articles

Test–retest stability on the WRAT-3 reading subtest in geriatric cognitive evaluations

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Pages 605-610 | Received 03 Apr 2008, Accepted 28 Jul 2008, Published online: 20 May 2009
 

Abstract

The primary goal of this study was to establish the stability of the Wide Range Achievement Test (WRAT-3) Reading score across two annual assessments of aging individuals. Participants were classified as controls (n = 200), mild cognitive impairment (MCI; n = 137), or possible or probable Alzheimer's disease (AD; n = 41). Test–retest stability was acceptable to high for all diagnostic groups. The descriptive classification (e.g., “average”) remained consistent for only 74% of participants. Results indicated that WRAT-3 Reading scores are appropriate for use with older adults, though the use of categorical descriptors to describe premorbid ability based on these scores is not supported.

This research was supported by P30-AG13846 (Boston University Alzheimer's Disease Core Center), M01-RR00533 (General Clinical Research Centers Program of the National Center for Research Resources, National Institutes of Health, NIH), R03-AG026610 (A.L.J.), R03-AG027480 (A.L.J.), K12-HD043444 (A.L.J.), and K23-AG030962 (Paul B. Beeson Career Development Award in Aging; A.L.J.).

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