(M.A., Iowa State University and Ph.D., Northern Arizona University), Assistant Professor, uses corpus linguistics methodologies to investigate register variation, with a focus on grammatical and lexico-grammatical variation in a range of contexts: in learner language, across disciplines, over time, and across general registers. Her books include Linguistic Variation in Research Articles: When Discipline Tells Only Part of the Story (John Benjamins, 2015) and Grammatical Complexity in Academic English: Linguistic Change in Writing (with D. Biber, Cambridge University Press, 2016). She serves on the Editorial Board for TESOL Quarterly and Journal of English for Academic Purposes, and is organizing the next American Association for Corpus Linguistics (AACL) Conference, to be held at Iowa State in September 2016.