Methodological Considerations for Auditory Training Interventions for Adults With Hearing Loss: A Rapid Review

Purpose: The aim of this study was to evaluate literature on auditory training published since 2013. Method: A rapid review or a streamlined approach to systematically identify and summarize relevant studies was performed. Selected health sciences databases were searched using a search strategy developed with the PICO (population, intervention, comparison, and outcome) framework. Studies eligible for inclusion had older adult participants with hearing loss and utilized technology-based auditory training in laboratory or home settings. Results: The study quality of most studies was found to be low to moderate, with concentrations between low and moderate. Major issues were related to study design and reporting, such as the need for blinding and a control group, larger sample sizes, and a follow-up for long-term outcomes of auditory training interventions. Wide variability in training approaches, participant backgrounds (e.g., audiograms, hearing aid use), and outcome measures are also noted. Conclusions: Evidence on the effectiveness of auditory training is mixed. Future research should include high-quality randomized controlled trials with representative populations; follow-up periods to study long-term effects; and exploration of behavioral, electrophysiological, and self-reported outcome measures. Recommendations for study designs and methodologies are also discussed.