Laurie Blass is a writer and editor specializing in print and digital English Language Teaching materials. She has an M.A. in Linguistics and a TESL certificate from the University of Pittsburgh and has taught ESL in the United States and France. She is the author/co-author of over 40 ELT titles representing a wide range of audiences, from adult education to ... Read moreEnglish for academic purposes. Jessica Williams is Professor of Linguistics at the University of Illinois at Chicago, where she teaches in the MA TESOL program. Her area of research is second language learning. She is the author of several ELT student books as well as professional reference books for ELT professionals. Show Less