"Dyslexia is a specific learning difficulty which affects up to 10 per cent of the population to some degree.
It is most commonly characterised by difficulties with the acquisition of reading, spelling and writing skills. Frequently, mathematics and aspects of spoken language are affected.
Dyslexic people often suffer from auditory processing difficulties, poor organisational skills, poor physical co-ordination and directional confusion.
The majority of dyslexic people have poor short-term memory that causes an inability to retain sequences of numbers and words, and instructions to carry out simple tasks.
Except for the common difficulty with written language no two dyslexic people exhibit the same range of associated characteristics.
Dyslexia affects people across the whole spectrum of ethnicity, socio-economic status and intellectual ability."
Dyslexia Handbook for Adult
Literacies in Scotland 2005.