This paper proposes usability-for-one as a new conceptual framework for understanding usability as it relates to Rehabilitation and Assistive Technology (R&AT). It argues that just as ergonomics for individual R&AT users is practiced as ergonomics-for-one, usability as it relates to individual R&AT users can be conceptualised as usability-for-one. The implications for R&AT service delivery and research are discussed.
Keywords: Ergonomics; rehabilitation and assistive technology; service delivery; usability for one.