Test Content Why are there 3 S/N (signal-to-noise) ratios on the SCAN-3? How do I use them? The original SCAN test, published in the 1980s, was considered just a screening measure. Further, most audiologists recognize that both SCAN-C and SCAN-A (the previous test versions) were diagnostic procedures that included four tests validated in previous studies of patients with confirmed central auditory lesions.
Overall, the nine tests of the SCAN-3 test batteries include all of the behavioral measures recommended in the recent Guidelines for the Diagnosis, Treatment, and Management of children and adults with central auditory processing disorder published in 2010 by the American Academy of Audiology. The SCAN-3 diagnostic tests include standard scores with percentile ranks and confidence intervals that are important in the interpretation of test results. The criterion-referenced norms provide cut scores for determining pass/fail of the screening measures. If an examinee fails the screening tests, or if there is a referral for diagnostic testing, then the audiologist can proceed with the diagnostic portion of the test. SCAN-3 contains three screening measures that can be used to determine if the entire battery should be administered. Purpose and Use Are the SCAN-3 tests (both Children and Adolescents/Adults) screening or diagnostic tests? Select a question below to see the response.
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