Contemporary concepts of disability are rooted in eighteenth- and nineteenth-century developments.
It gauges one's ability to perform the physical tasks of daily life and the ease with which these tasks are performed.
PFC declines with advancing age to result in frailty, cognitive disorders, and/or physical disorders, all of which may lead to labeling individuals as disabled.
Different terms have been used for disabled people in different times and places.
Disability or impairment are commonly used, as are more specific terms, such as blind (to describe having no vision at all) or visually impaired (to describe having limited vision).
Disabilities is an umbrella term, covering impairments, activity limitations, and participation restrictions.