Abstract
The purpose of this investigation was to determine central auditory processing (CAP) individual test efficacy and test battery efficacy and to estimate the costs that are associated with the identification of a targeted sample. Ninety-one children with normal learning (NL) abilities and 147 children with a classroom learning disability (CLD) and presumed CAP disorders (CAPDs) ranging in age from 7 to 13 years were given a battery of seven CAP tests. The test battery consisted of: (1) Binaural Fusion Test (BFT), (2) Masking Level Difference (MLD) test, (3) Filtered Speech Test (FST), (4) Time Compressed Speech (TCS) test, (5) Dichotic Digits Test (DDT), (6) Staggered Spondaic Word (SSW) test, and (7) Pitch Pattern Test (PPT).We believe that this investigation is the first report regarding the assessment of the utility of CAP tests using clinical decision analysis (CDA). We determined that the BFT separated the two samples most effectively and that the FST was the next most effective. A test protocol with BFT and FST or BFT and MLD represented the best battery approach when hit rate, false positive rate, and cost factors were considered. However, if the intent is to be certain that a child with CLD has CAPD given a positive test result, then the BFT and MLD would be the test battery of choice.
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