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The Usability-Toolbox is an instrument for evaluating and developing hearing aids and cochlear implants that meets the usability standards and guidelines EN ISO 9241 and DIN EN 62366. On the one hand, classical instruments of usability research, such as focus groups, heuristic evaluation, wizard-of-oz experiments and creative workshops are used. On the other hand, contextual request approaches as well as qualitative and quantitative video analysis are also offered. In order to improve the use of hearing aids and cochlear implants, various defect qualities are analyzed. Following the Grounded Theory approach, user behavior is observed depending on different hearing aid algorithms.

To group our subjects into different user types with regard to the operation of medical devices, hearing aids and cochlear implants and their accessories, we use standardized procedures such as technical competence, dexterity, near vision and cognitive performance.

Hörzentrum Oldenburg GmbH has particular expertise in usability research with older people and can therefore provide hearing aid and CI manufacturers with deeper insights into the needs of their customers and the user-friendliness of their products.

The Hörzentrum Oldenburg founded the Clinical Innovation Center for Medical Technology Oldenburg (KIZMO) together with the Protestant Hospital Oldenburg in 2015 and applies usability engineering methods in the field of medical technology in interaction with the physicians in clinics.


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Hörzentrum Oldenburg GmbH
Marie-Curie-Straße 2
D-26129 Oldenburg

Phone: 0441 2172-100
Telefax: 0441 2172-150