In the opening chapter, the author discusses matters of theoretical debate relevant to the self-assessment approach overall, as well as to technical points from the world of psychometrics, then considers the motive for using self-assessment -- in effect, expanding on the above claim about measurement of disability. Chapter 2 focuses on the current WHO scheme and the one it superseded. The related discussion then follows about identifying communication disability, and the limits of normal hearing function. Chapter 3 records the known principal self-assessment measures concerning hearing loss that have emerged to date, plus subsequent published work developing or applying one or more of these scales. Chapter 4 solely focuses on an analysis of one measure, the Speech, Spatial and Qualities of Hearing scale. Chapter 6 covers studies in adults that have included self-assessment measures applied in the case of cochlear implants and in the case of middle-ear implants. In Chapter 7 the author reviews work that has involved one or another self-assessment approach to tinnitus in the context of research inquiry and/or clinical management. The final chapter addresses other areas of audiological and related practice and research where self-assessment has emerged.