Muriel Saville-Troike is Professor Emerita of the University of Arizona, and was named Regents' Professor of English before her retirement. She has made significant contributions to the fields of sociolinguistics and applied linguistics, and has previously held posts at Texas A&M University, the University of Texas, Georgetown University, and the University of Illinois. Saville-Troike is a past President of TESOL, ... Read moreand was made a Distinguished Scholar by the American Educational Research Association Standing Committee on the Role and Status of Minorities in Educational Research. Karen Barto holds an interdisciplinary PhD in Second Language Acquisition and Teaching from the University of Arizona, and is a Content Developer and Lecturer at the university's Center for English as a Second Language. She has taught French, English applied linguistics and English as a second language in several contexts. She has designed, developed and taught teacher training classes and programs, as well as conducting linguistic and psycholinguistic research. Also an avid student of foreign language herself, she has studied French, German, Italian, Spanish, Lao and Latin. Show Less