Cognitive Web Accessibility: Readability 2006

Cognitive and Learning Disability Matrix (for WCAG 2.0) - Joe Clark: Media access
"This table lists cognitive and learning disabilities and suggests the success criteria from WCAG 2 that improve the accessibility of content for users with each disability. In many cases, the success criterion does not assist the user directly, but enables assistive technology that can assist the user."
Web Design for Dyslexics: Accessibility of Arabic Content
"This paper reports results of a workshop on the design of electronic content for users with Specific Learning Difficulties (SpLD), particularly Arabic dyslexics. First we shed some light on the nature of the Arabic language and discuss features that account for the unique needs of Arabic users with reading disorders. Then we present recommendations for accessible web design for Arabic content in light of existing guidelines on web design for dyslexic users."
The Effects of Lower-literacy on Mental Models to Support Website Navigation
Celeste Lyn Paul
Designing for Dyslexics: Part 1 of 3
"This is the first in a series of three articles examining the specific learning difficulty known as dyslexia and how web design can impact the ability of those afflicted to access information on web pages." Published by Accessites.org.