Research
Evidence-based research plays a vital role in improving hearing health services and accessibility for Deaf and hard of hearing communities. Here you’ll find reports, studies, and insights that inform our work and advocacy. By supporting research and sharing knowledge, we help ensure policies, programmes, and services are guided by evidence and deliver the best possible outcomes.
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Hearing Intervention and Cognitive Decline (ACHIEVE Study)
This landmark trial examines whether hearing interventions can reduce cognitive decline in older adults. It provides new evidence on the role of hearing care in supporting brain health and reducing dementia risk.
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New Zealand Trak Report
The New Zealand Trak Report provides key insights into hearing aid use, hearing health awareness, and attitudes toward hearing loss in New Zealand. The research helps inform strategies to improve access to hearing care and hearing technology.
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Listen Hear! NZ Report
This report outlines the social and economic impact of hearing loss in New Zealand, including prevalence, health system costs, productivity losses, and barriers to care—highlighting the scale of the issue and the need for action.
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World Report on Hearing
The WHO World Report on Hearing outlines the global scale of hearing loss and the urgent need for stronger hearing health systems, prevention, and early intervention. It provides a roadmap for improving hearing care worldwide.
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Economic Effects of Hearing Loss
This NZIER report analyses the economic impact of hearing loss in New Zealand using economic modelling. The findings show that untreated hearing loss affects workforce participation, productivity, and healthcare costs, highlighting the strong economic case for early detection, treatment, and better access to hearing care.
Economics of Hearing Loss (2020)
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New Zealand Guidelines on Auditory Processing Disorder
These guidelines provide evidence-based recommendations for the diagnosis and management of auditory processing disorder (APD) in New Zealand. They support clinicians, educators, and families in understanding APD and its impact on learning and communication.
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