Although there is a long history of research on vocabulary, the vast majority of studies have appeared over the last 30 years. This new reference work will provide a comprehensive source of the most influential findings that will be both a useful starting point for developing knowledge of the field, as well as a valuable database that can be relied upon when researching vocabulary. Comprised of 4 volumes, the collection will cover 4 key areas. Volume 1 will focus on the core issues related to vocabulary knowledge. The focus of volume 2 is on incidental vocabulary learning. Volume 3 explores the deliberate instruction of vocabulary, and volume 4 looks at formulaic language.