How do people learn to read and write--and how has the development of these skills transformed the brain and the world itself ? Neuropsychologist and child development expert Maryann Wolf answers these questions in this ambitious and provocative book that chronicles the remarkable journey of written language not only throughout our evolution but also over the course of a single child's life, showing why a growing percentage have difficulty mastering these abilities.

With fascinating down-to-earth examples and lively personal anecdotes, Wolf asserts that the brain that examined the tiny clay tablets of the Sumerians is a very different brain from the one that is immersed in today's technology-driven literacy, in which visual images on the screen are paving the way for a reduced need for written language--with potentially profound consequences for our future.