Developmental disabilities are severe, chronic disabilities attributable to mental and/or physical impairment, which manifest before age 22 and are likely to continue indefinitely. They result in substantial limitations in three or more areas: self-‐care, receptive and expressive language, learning, mobility, self-‐direction, capacity for independent living and economic self-‐sufficiency, as well as the continuous need for individually planned and coordinated services.
-‐ Administration on Developmental Disabilities, January 25, 2002
The United States Access Board
The U.S. Access Board is a federal agency that promotes equality for people with disabilities through leadership in accessible design and the development of accessibility guidelines and standards for the built environment, transportation, communication, medical diagnostic equipment, and information technology.