Using Boston Naming Test to Distinguish DLB from AD
This abstract was recently published on PubMed (see pubmed.gov). The researchers used a test called the Boston Naming Test. The test was given to those with probable DLB and those with probable AD. Errors were classified into 5 types. "AD patients' overall performance on the BNT was significantly worse than DLB patients. In terms of error types, DLB patients made significantly more visuoperceptual errors while AD patients made significantly more semantic errors. ... Results suggest that error analysis of BNT responses may be useful in distinguishing between patients with DLB and AD."
Archives of Clinical Neuropsychology. 2007 Aug 1; [Epub ahead of print]
Boston naming performance distinguishes between Lewy body and Alzheimer's dementias.
Williams VG, Bruce JM, Westervelt HJ, Davis JD, Grace J, Malloy PF, Tremont G.
Brown Medical School, Providence, RI, United States; Rhode Island Hospital, Providence, RI.
Although naming impairment is common among persons with dementia, little is known about how specific error types on naming tasks may differ between dementias. Recent research has suggested that persons with dementia with Lewy bodies (DLB) have more visuospatial/visuoperceptual dysfunction than those with Alzheimer's disease (AD), which may impact their ability to correctly perceive and name objects. Our retrospective study evaluated the presence and frequency of error types among patients with DLB and AD on the Boston Naming Test (BNT). Errors on the BNT were classified into five types (i.e., visuoperceptual, semantic, phonemic, no response, and other), and performance was compared among 31 probable DLB patients and 31 probable AD patients matched for age, gender, education, and overall dementia severity. AD patients' overall performance on the BNT was significantly worse than DLB patients (p<.05). In terms of error types, DLB patients made significantly more visuoperceptual errors (p<.05) while AD patients made significantly more semantic errors (p<.001). Logistic regression revealed that the number of visuoperceptual and semantic errors significantly predicted group membership (p<.005), with an accuracy of up to 85%. Results suggest that error analysis of BNT responses may be useful in distinguishing between patients with DLB and AD.
PubMed ID#: 17681741
Here's a useful list of neuropsych tests:
The Boston Naming Test is described as: "Assessing the ability to name pictures of objects through spontaneous responses and need for various types of cueing. Inferences can be drawn regarding language facility and possible localization of cerebral damage."