Peter Trudgill is a theoretical dialectologist who has held professorships at the Universities of Reading, Essex, and Lausanne. He is currently professor emeritus of English Linguistics at Fribourg University, Switzerland, and honorary professor of Sociolinguistics at the University of East Anglia, England. He has honorary doctorates from the Universities of Uppsala, East Anglia, La Trobe, British Columbia, Patras and Murcia. He is the author of Dialects in Contact; New-dialect Formation: The Inevitability of Colonial Englishes; and Sociolinguistic Typology: Social Determinants of Linguistic Complexity.