Cristina Sanz is a professor of Spanish applied linguistics, director of the School of Foreign Service & Intensive Spanish Programs, and codirector of the Center for Brain Basis of Cognition at Georgetown University. She is the editor of Mind and Context in Adult Second Language Acquisition, which won the MLA's Kenneth W. Mildenberger Award.

Ronald P. Leow is professor of Spanish applied linguistics and director of Spanish language instruction at Georgetown University. He is the coeditor of Little Words: Their History, Phonology, Syntax, Semantics, Pragmatics, and Acquisition.