Professor of English Language, Dept of Linguistics and English Language, Lancaster …

Distinguished Professor of Linguistics and Anthropology, University of Colorado Boulder

Professor of Lingusitics, University of Pittsburgh

professor of Linguistics, Ca' Foscari University of Venice

York University

Professor of sociolinguistics

University of Jyväskylä

Professor of Communication Studies and Linguistics, University of Minnesota

The Open University

Professor of Language and Professional Communication