Development of a Visual Questionnaire for Evaluating Usability in Health Technologies.

Traditional usability questionnaires include complex terminology and abstract technical phrasing, making them inappropriate to individuals with limited digital (health) literacy. As a result, these people are underrepresented in evaluations of digital health technologies (DHTs) in a home setting, leading to feedback that does not adequately reflect their needs and experiences. Ultimately, this contributes to the development of technologies that may not be fully accessible, usable, or effective for all users. To address this gap, a visually enhanced usability questionnaire was co-produced with people living with dementia and students. The resulting card-deck can be applied to support the conversation and evaluation of DHT for individuals with lower digital (health) literacy. Further research is needed to determine whether this visual tool effectively improves their representation and contributes to more equitable assessments of DHTs in practice.