This handbook marks the transformation of the topic of literacy from the narrower concerns with learning to read and write to an interdisciplinary enquiry into the various roles of writing and reading in the full range of social and psychological functions in both modern and developing societies. It does so by exploring the nature and development of writing systems, the relations between speech and writing, the history of the social uses of writing, the evolution of conventions of reading, the social and developmental dimensions of acquiring literate competencies, and, more generally, the conceptual and cognitive dimensions of literacy as a set of social practices. Contributors to the volume are leading scholars drawn from such disciplines as linguistics, literature, history, anthropology, psychology, the neurosciences, cultural psychology, and education.