Evaluating Language Comprehension in Alzheimer's disease: the use of the Token Test
OBJECTIVE: To analyze the psychometric properties of the Token test (TT), a verbal comprehension test, and its applicability to the diagnosis of mild Alzheimer's disease (AD). METHODS: One hundred and sixty participants (80 AD and 80 controls) performed the TT and a short battery of neuropsychological tests designed to evaluate general cognitive status, working memory and executive functions. Internal consistency, factor structure, correlation with other measures and group comparisons were evaluated. RESULTS: The test evinced good internal consistency and a bi-factorial structure (related to comprehension and attention). Differences between AD and controls were significant, however the TT presented only moderate sensitivity and specificity for the AD diagnosis. CONCLUSION: The TT showed evidence of good psychometric properties and adequacy for characterizing comprehension deficits in AD, but it was not an appropriate test for the AD detection and diagnosis.
| Auteurs principaux: | , , , , |
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| Format: | Digital revista |
| Langue: | English |
| Publié: |
Academia Brasileira de Neurologia - ABNEURO
2012
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| Accès en ligne: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2012000600010 |
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