This book, which has been adopted as a set text for a number of training and diploma courses, is long established as a comprehensive source book for both students and practitioners in the field. For this edition the book has been updated both in response to new teacher training needs and to take account of the rapid developments in research and ideas on dyslexia which have occurred in recent years. The latest research findings cover such topics as demographic studies, phonological skills, the use of the British Ability Scales, and sub-types of dyslexia. The material on teaching has been expanded, with particular attention given to phonics and word analysis skills, essay planning and writing, the use of computers and word processing and evaluating teaching programmes.