Robert DeKeyser is Associate Professor of Linguistics at the University of Pittsburgh. He has a Ph.D. in Education with a minor in Linguistics from Stanford University. His research is on second language acquisition, particularly cognitive-psychological aspects. Some of his favorite topics are interlanguage variability, monitoring processes, automatization of second language grammar, the effect of age of learning and other individual differences, and the relationship between implicit and explicit learning and knowledge. He has published in a variety of journals, including Language Learning, Studies in Second Language Acquisition, Language Testing, The Modern Language Journal, TESOL Quarterly, and AILA Review.