What is a development editor?

A development editor works with an author to define and improve the structure and content of a manuscript. Development editors may start early on, from the point when the manuscript is accepted for publication, noting a lack of focus and helping the author refine a more definite direction for the book. They may also discover inconsistent tone, an unclear audience, or a stilted writing style, and provide suggestions to resolve these issues. Some development editors review the book chapter by chapter, until the book is ready for publication. Most developmental editors have a degree in English or a related subject. Many have experience in publishing as copy editors or proofreaders, or have been writers themselves before moving to become developmental editors.