This collection brings together and integrates topical research on the nature and development of pictorial representation by twenty investigators - psychologists, artists and educationalists from several countries. Four themes dominate the book: What is a picture, and what makes a picture successful? What mental apparatus is called into play by the person who tries to draw? What information do children typically try to capture in a range of conditions, both normal and abnormal? How accurate can we expect children to be in pursuit of their own graphic goals? In the ten years leading up to the book's publication in 1985, major advances had been made in the scientific study of line drawing and this book presents many exciting insights into this field at the point of its development.