Increasing the spaces between letters and lines of text helps dyslexics double their accuracy and read 20% faster.
In the study, the space between letters was increased by 2.5 points and the space between lines of text was also increased to show a proportional amount of white space on the page.
Not only did dyslexic children read faster, but the greatest benefits were observed in children who had the most problem identifying letters. Children without reading challenges showed no increase in reading speed, suggesting that the benefit was unique to children with dyslexia.
Scientists believe the approach worked because people with dyslexia are more affected than normal readers by a phenomenon known as “crowding”, which makes a letter harder to identify when it is close to other letters.
Check out the rest of the article here: http://www.dailytelegraph.com.au/lifestyle/wider-letter-spacing-helps-dyslexics-read/story-e6frf00i-1226385074170