Diagnostic testing of a person’s hearing is central to the selection and fitting of hearing aids. In addition to the pure tone audiogram based on sounds, hearing loss can also be diagnosed by speech perception tests. While the audiogram does not use language and thus tests auditory perception exclusively, it is more difficult to restrict language-based testing to hearing alone. Two central issues observable in current language-based testing for hearing loss may render the test results inaccurate, namely the selection of language materials and the differences between standard and regional varieties of the test’s language. These problems need to be addressed in test development by integrating more detailed linguistic knowledge and by considering cross-linguistic differences of the sound inventories of different languages.
Hearing Aids Communication: Integrating Social Interaction, Audiology and User Centered Design To Improve Communication With Hearing Loss and Hearing Technologies, 2012, p. 104-112