Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of E.N.T

Background : Prescriptive methods have been at the core of modern hearing aid fittings for the past several decades . Every decade or so there have been revisions to exising methods and / or the emergence of new methods that become widely used . Study objectives :(1) to measure the range of fit to targets in a clinical environment .(2) To evaluate the preferred listening levels of adults relative to the desired sensation level v5,0a (DSL v5.0a) adult prescription; and (3) To measure the self - reported effectiveness of the DSL v5.0a adult prescription for both listening performance and benefit

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