Language Development and Learning to Read: The Scientific Study of How Language Development Affects Reading Skill

McGuinness first examines the phonological development theory—the theory that phonological awareness follows a developmental path from words to syllables to phonemes—which has dominated reading research for thirty years, and finds that research evidence from other disciplines does not support the theory. McGuinness then looks at longitudinal studies on the development of general language function, and finds a "tantalizing connection" between core language functions and reading success. Finally, she analyzes mainstream reading research, which links reading ability to specific language skills, and the often flawed methodology used in these studies. McGuinness's analysis shows the urgent need for a shift in our thinking about how to achieve reading success.