Douglas Biber Douglas Biber is Regents' Professor of English (Applied Linguistics) at Northern Arizona University. His research efforts have focused on corpus linguistics, English grammar, and register variation. He has published over 220 research articles and 24 ooks including Variation across Speech and Writing (Cambridge, 1988), Longman Grammar of Spoken and Written English (1999), and The Cambridge Handbook of English Corpus Linguistics (Cambridge, 2015). Read More Read Less