WHODAS 2.0

WHODAS 2.0 is the World Health Organization Disability Assessment Schedule, version 2.0, a standardized instrument that measures health and disability across six life domains: cognition, mobility, self-care, getting along with others, life activities, and participation in society. It is grounded in the International Classification of Functioning, Disability and Health (ICF) and produces a normalized score from 0 to 100, where higher values indicate greater disability. Versions exist with 12 or 36 items, in self-administered, interviewer-administered, and proxy-administered forms. WHODAS 2.0 matters for accessibility research because it provides a diagnosis-independent way to characterize functional limitations, allowing studies to report participant ability profiles in a comparable, internationally validated form rather than relying on diagnostic labels alone, which correlate poorly with actual input performance.