From birth to early adulthood, all aspects of a child’s life undergo enormous development and change, and language is no exception. This book documents the results of a pioneering longitudinal linguistic survey, which followed a cohort of sixty-seven African American children over the first twenty years of life, to examine language development through childhood. It offers the first opportunity to hear what it sounds like to grow up linguistically for a cohort of African American speakers, and provides fascinating insights into key linguistics issues, such as how physical growth influences pronunciation, how social factors influence language change, and the extent to which individuals modify their language use over time. By providing a lens into some of the most foundational questions about coming of age in African American Language, this study has implications for a wide range of disciplines, from speech pathology and education, to research on language acquisition and sociolinguistics.