This book captures the diversity and richness of writing as it relates to different forms of abilities, skills, competencies, and expertise. Psychologists, educators, researchers, and practitioners in neighboring areas are interested in exploring how writing develops and in what manner this development can be fostered, but they lack a handy, unified, and comprehensive source of information to satisfy their interest. The goal of this book is to fill this void by reflecting on the phenomenon of writing from a developmental perspective.