Max Coltheart & Nancy E. Jackson 
Routes To Reading Success and Failure [PDF ebook] 
Toward an Integrated Cognitive Psychology of Atypical Reading

Fundamental to this book is an attempt to understand the nature of individual differences in word and nonword reading by connecting three literatures that have developed largely in isolation from one another: the literatures on acquired dyslexia, difficulties in learning to read, and precocious reading.