Boston Naming Test: Shortened Versions for Use in Alzheimer's Disease

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Abstract
Four new 15-item versions of the boston Naming Test (BNT), a 15-item version used by the Consortium To Establish a Registry for Alzheimer's Disease (CERAD), and three 30-item BNT versions were studied in 26 subjects with Alzheimer's Disease (AD) and 26 nondemented, neurologically normal controls. The four 15-item versions were statistically equivalent. On each version, controls performed significantly better than AD subjects, and scores on each could be extrapolated to a complete 60-item BNT score. The CERAD version also differentiated between ad and control subjects, but it was not equivalent to our four versions and could not be as easily extrapolated to a 60-item score. Even and odd 30-item BNT versions were confirmed to be equivalent, and we further validated a 30-item empirical version designed to maximally discriminate between AD and normal subjects. Equivalent 15-or 30-item versions of the BNT will be useful in repeated assessments requiring independent forms of a naming task, as well as in situations where administration of the complete BNT is not practical

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