Book excerpt: Current research increasingly highlights the role of early literacy in young children's development--and facilitates the growth of practices and policies that promote success among diverse learners. The Handbook of Early Literacy Research presents cutting-edge knowledge on all aspects of literacy learning in the preschool years. Volume 1 covers such essential topics as major theories of early literacy; writing development; understanding learning disabilities, including early intervention approaches; cultural and socioeconomic contexts of literacy development; and tutoring programs and other special intervention efforts.