Boston Diagnostic Aphasia Examination

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The Boston Diagnostic Aphasia Examination or BDAE is a test used to evaluate adults suspected of having aphasia. It was created by Harold Goodglass and Edith Kaplan and scores patients based on percentiles. The BDAE evaluates language skills based on perceptual modalities (auditory, visual, and gestural), processing functions (comprehension, analysis, problem-solving), and response modalities (writing, articulation, and manipulation). Many other tests are sometimes used by neurologists on a symptom-by-symptom basis, and other comprehensive tests exist like the Western Aphasia Battery.