The test-retest reliability of the Western Aphasia Battery-Revised

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Issue Date
2019-05-31Author
Bond, Brandall
Publisher
University of Kansas
Format
49 pages
Type
Thesis
Degree Level
M.A.
Discipline
Hearing and Speech
Rights
Copyright held by the author.
Metadata
Show full item recordAbstract
The purpose of the study was to examine the test-retest reliability of the Western Aphasia Battery-Revised (WAB-R). Ten people with stroke-induced aphasia were administered the entire WAB-R twice. Correlation coefficients were .80 for 11/13 WAB-R sections/subtests. Paired t-tests revealed no significant difference between the means at Time 1 and Time 2 for any of the 13 WAB-R sections/subtests. Effect size was less than small for 11/13 WAB-R sections/subtests and small for two subtests. For 8/13 sections/subtests, one WAB-R standard error of measurement (SEM) represented less than 5% of the total number of points possible; thus, 68% of the time, persons with aphasia would be expected to score within 5% of the total number of points possible on repeated testing. For 5/13 sections/subtests, one WAB-R SEM represented more than 5% but less than 10% of the total number of points possible.
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