The use of printed words to capture language is one of the most remarkable inventions of humankind, and learning to read them is one of the most remarkable achievements of individuals. In recent decades, how we learn to read and understand printed text has been studied intensely in genetics, education, psychology, and cognitive science, and both the volume of research papers and breadth of the topics they examine have increased exponentially. Theories of Reading Development collects within a single volume state-of-the-art descriptions of important theories of reading development and disabilities. The included chapters focus on multiple aspects of reading development. Each chapter is an independent theoretical review of the topic to which the authors have made a significant contribution and can be enjoyed on its own, or in relation to others in the book.