Journal
ARCHIVES OF CLINICAL NEUROPSYCHOLOGY
Volume 26, Issue 5, Pages 434-444Publisher
OXFORD UNIV PRESS
DOI: 10.1093/arclin/acr042
Keywords
Boston Naming Test; Item response theory; Item difficulty; Item discriminability
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Funding
- National Institutes of Health [NS054722]
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The Boston Naming Test is one of the most widely used neuropsychological instruments; yet, there has been limited use of modern psychometric methods to investigate its properties at the item level. The current study used Item response theory to examine each item's difficulty and discrimination properties, as well as the test's measurement precision across the range of naming ability. Participants included 300 consecutive referrals to the outpatient neuropsychology service at Mayo Clinic in Florida. Results showed that successive items do not necessarily reflect a monotonic increase in psychometric difficulty, some items are inadequate to distinguish individuals at various levels of naming ability, multiple items provide redundant psychometric information, and measurement precision is greatest for persons within a low-average range of ability. These findings may be used to develop short forms, improve reliability
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