Selecting Scenarios for Hearing-Related Laboratory Testing.

For hearing aid users to experience everyday benefit from their hearing aids, research, development, and fitting of hearing aids must be performed using evaluation methods that are indicative of everyday performance. These evaluations can take place both in peoples' ordinary lives and in laboratory settings. For the results of laboratory testing to be ecologically valid, the selected test scenarios must capture the essence of everyday listening. The present article discusses the selection of these laboratory test scenarios in three parts. Part 1 reviews prior research on the selection of everyday listening situations for laboratory testing and discusses realistic test scenarios as important research tools. Part 2 presents findings from an ecological momentary assessments study in which 19 experienced hearing aid users reported real-time auditory reality data, including their current listening activity and their current sound environment. Participants categorized their listening situations according to the common sound scenarios framework and rated how often each situation occurred, how important it was to hear well, and how difficult it was to hear in the situation. These ratings made it possible to filter the data according to three criteria (occurrence, importance, and difficulty). The filtered data could potentially be used for selecting laboratory test scenarios. Part 3 uses the data from Part 2 and data from the studies reviewed in Part 1 to broadly explore the test scenarios that various selection criteria lead to. Further, implementation of test scenarios in the laboratory, and the strengths and limitations of data collection methods for investigating auditory reality are briefly discussed. The article concludes with a summary of the collected study.