Here are extracts of the response by Dr. Marlynne to British Dyslexia Association and my comments.
Marlynne:
There are longitudinal studies of 11 years, with about 700 children, which demonstrate that dyslexia does not develop when children begin with a good SSP programme and when children who fall behind are identified early and given extra practice and teaching with SSP in order to keep up. Not a single child in these studies developed severe literacy difficulties. (See Grant, M (2014)
My comment: