It is the only publication which views current developments in materials development through the eyes of developers and users of materials from all over the world. In doing so it applies principles to practice in ways demonstrated to facilitate the effectiveness of language learning materials. The chapters are written so that the book provides critical overviews of recent developments in materials development and at the same time acts as a stimulus for development and innovation in the field. It is intended both for use as a course book on postgraduate and teacher training courses and as a resource for the stimulus and refreshment of teachers, publishers and applied linguists in the field. The book contains updated versions of many of the chapters in the 2003 edition plus new chapters on corpus-informed materials development, materials development for blended learning, materials development for EAP, materials development for ESOL and materials development for young learners.