Professor of Linguistics, University of Michigan/Ann Arbor

Professor of Linguistics, University of Chicago

Honorary Professor, Aston Institute of Forensic Linguistics

All Souls College, Oxford

Columbia University

Professor of English Linguistics, University of Duisburg and Essen, Germany

Professor of Spanish Linguistics, University of Southern California

Emeritus Professor, University of New England (Australia)

Professor in Linguistics, University of Hong Kong

The University of Texas at Austin