PGRImagine if you're born with a mental block, which prevents you learning the basics. Reading, writing, maths. Even though you're intelligent, school becomes a nightmare. You get a label like dyslexic, diverted into the slow lane, and chances are you end up believing you're stupid. If that sounds familiar well you're not alone. About one in ten people are dyslexic, but as John Hudson reports, new thinking about thinking means many more people can reach their true intellectual potential.