Bill VanPatten was a professor of Spanish at Michigan State University, where he was also an affiliate faculty in the Program for Cognitive Science. He is currently an independent scholar.Gregory D. Keating is a professor of Linguistics at San Diego State University. He is a former associate editor of Studies in Second Language Acquisition.Stefanie Wulff is an associate professor in the Linguistics Department at the University of Florida. She is co-editor-in-chief of Corpus Linguistics and Linguistic Theory.