This book details the results of a four-year collaboration among writing scholars on different dimensions of writing development across the lifespan. Chapters offer a framework for understanding writing development, consisting of eight principles, then address writing in early childhood; linguistic features of writing development during the years of schooling; how students’ definitions of writing change across childhood, middle childhood, and early adolescence, for both typically developing writers and students with writing disabilities; the role of agency in adolescents’ writing development; the writing curriculum; the significance of roles, historical timing, and dispositions in the writing development of working adults; sociocultural and cognitive perspectives on writing communities; and designing a longitudinal study of writing across the lifespan. Annotation ©2018 Ringgold, Inc., Portland, OR (protoview.com)