The aim of the Clinical Behavioural Insights (CBI) project was to look for opportunities to develop and test behavioural science interventions relating to the process of hearing aid choice. The focus was on first-time adult voucher clients, the decisions they make about different hearing aid technology, and the possible influencers of these decisions. In doing so, the project examined not only the experiences of the clients, but the clinical process itself within the broader context of hearing service provision in Australia.