The Trace Center has prepared a document, A Brief Introduction to Disabilities [1], that discusses major disability groups and some specific barriers to accessibility they encounter. This online publication describes specific access issues related to visual impairments, hearing impairments, physical impairments, cognitive/language impairments, seizure disorders, and multiple impairments.
References
- [1] A Brief Introduction to Disabilities
http://trace.wisc.edu/docs/population/populat.htm