Maria Polinsky is Professor of Linguistics and Associate Director of the Language Science Centre at the University of Maryland. She is the author of Heritage Languages and Their Speakers (2018), Deconstructing Ergativity (2016) and The Russian Language in the Twentieth Century (1996). She has done extensive primary work on several language families, in particular, on languages of the Caucasus: Nakh-Dagestanian, Norwest Caucasian, and Kartvelian. Her research emphasizes the importance of lesser-studied languages for theoretical linguistics.