Matti Rissanen is Professor Emeritus of English Philology at the University of Helsinki. His main field of interest is corpus-based analysis of the history of English syntax and lexis, from Old to Late Modern English and he was the leader of the project compiling The Helsinki Corpus of English Texts (publ. in 1991). He is an active member of the Research Unit for the Study of Variation, Contacts and Change in English (VARIENG), at the University of Helsinki.