From 1977 to 2006 he taught at the University of Sussex, where he served as professor of linguistics (1991–2006) and as Dean of the School of Cognitive and Computing Sciences (1998–2003).
Dari tahun 1977 sampai 2006 ia mengajar di Universitas Sussex, di mana ia menjabat sebagai profesor linguistik (1991-2006) dan sebagai Dekan di School of Cognitive and Computing Sciences (1998-2003).