Professor of Language Learning and Teaching, The Open University, UK

Professor of Psycholinguistics, University of Nottingham

Honorary Professor, University of East Anglia & Jilin University

Professor Emeritus of Second Language Studies, University of Hawaii at Manoa

Professor of Applied Linguistics, University of Nottingham

Pennsylvania State University

Queensland University of Technology

Emeritus Professor in Applied Linguistics & Multilingualism, Birkbeck, University of London

Professor of Linguistics, Georgetown University

Professor of Applied Linguistics, Emeritus, Penn State University