dc.contributor.author | Dillon, Harvey | |
dc.contributor.author | Tomlin, Dani | |
dc.contributor.author | Kelly, Andrew S | |
dc.date.accessioned | 2015-02-11T00:17:20Z | |
dc.date.available | 2015-02-11T00:17:20Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | J Am Acad Audiol 25:541–548 (2014) | en_US |
dc.identifier.uri | http://hdl.handle.net/123456789/110 | |
dc.description.abstract | Background: Raw percentage scores can be transformed to age-specific Z scores, despite the asymmetric
distribution of normative data using a process that is applicable to any percentage (or proportion)-
based result.
Purpose: Normative values are generated for the commonly used dichotic digit and frequency pattern
behavioral tests of auditory processing.
Study Sample: A total of 180 normal-hearing children aged 7 yr 0 mo to 12 yr 2mo took part in this study.
Research Design: A transformation and regression method is incorporated that allows for the asymmetric
distribution of normative results and the development of the response across the 7–12-yr-age range.
Data Collection and Analysis: Percentage correct scores were determined for each ear in the dichotic
digit and frequency pattern tests, delivered at 50 dB HL. The scores were arcsine transformed, then
regressed against using an exponential equation, providing an age specific estimated mean score. The
residual error of the regression was then used to estimate age specific variance.
Results and Conclusions: The ability to express results along an age continuum (while accounting for
the asymmetric distribution and significant developmental influences) as a standard unit across all ages
enables a simplified expression of performance ability on a task. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Journal of the American Academy of Audiology | en_US |
dc.subject | Auditory processing disorders, Z score | en_US |
dc.title | Allowing for Asymmetric Distributions When Comparing Auditory Processing Test Percentage Scores with Normative Data | en_US |
dc.type | Article | en_US |