The prevention and identification of reading disability.

There is abundant evidence that intervention for the prevention of reading disability is effective in dramatically reducing the prevalence of reading disability. This article explores the current state of knowledge regarding the causation and prevalence of reading disability, along with evidence that the incidence of this condition can be dramatically reduced through quality intervention. Specifically, we (1) explore what is known about the nature and causes of reading disability, (2) examine how reading disability can best be identified, and (3) estimate the percentage of children that have severe reading difficulties that indicate the true presence of a disability.