Gavin Brooks is a lecturer at Kyoto Sangyo University, Japan. He has taught EAL and EFL in Asia and South America for over two decades. His research interests include second language vocabulary, especially the vocabulary needs of EAL students, corpus linguistics, and measures of lexical diversity.

Jon Clenton is an associate professor at Hiroshima University, Japan. His research interests include the assessment of vocabulary knowledge, L2 vocabulary development in terms of bilingual models, word association studies, lexical processing, and L2 measurement tools. His research has resulted in several international journal article publications.

Simon Fraser is a professor at Hiroshima University, Japan. His research interests include English for Specific Purposes (ESP), corpus linguistics, and L2 vocabulary development. His lexical analyses of medical English corpora have informed the development of medical English materials and wordlists, and he has published widely in this area.