Self-Report Approach to Assessing Benefit Derived from Amplification

Abstract

The ultimate goal of hearing aid selection procedures is successful use of amplification in everyday communication. The need to validate selection procedures is widely recognized, but the development of relevant criterion measures is a prerequisite to evaluation of predictive validity. This study explored the feasibility of using a self-report method of measuring success with amplification. A 64-item questionnaire was administered to 128 experienced hearing aid users who rated the benefit received from amplification in a variety of situations. Internal consistency reliability was excellent (α = .96), indicating that the perceived benefit is sufficiently consistent across situations to yield reliable measures of individual differences among patients. Factor analysis of the interitem correlation matrix, however, led to the identification of four types of situations that might be assessed separately: (a) noisy situations; (b) quiet situations with the speaker in proximity; (c) situations with reduced signal information; and (d) situations with nonspeeeh stimuli. In general, patients reported significantly more benefit from their aids in quiet situations than in noise. A self-report methodology for measuring successful use of amplification in daily life appears promising as a criterion measure in predictive validation studies of hearing aid selection procedures.