This book is based on the latest researches on dyslexia and contains a certain solution for dyslexic people. This book is one of the greatest references and gives complete information in several categories such as diagnosing, treating and preventing dyslexia. This book is highly recommended and useful for all doctors, psychiatrists, psychologists, therapists, teachers, and parents. This is the third edition. The Key to Dyslexia has been translated into several languages and over 350000 copies of this book have been sold.