Eun Hee Kim is an Assistant Professor of Instruction in the Department of Asian Languages and Cultures at Northwestern University. She has taught different tracks and levels of Korean language courses at different institutions including University of Illinois at Urbana-Champaign, Rice University and Michigan State University. As a language instructor and a researcher, she is interested in the types of linguistic structures that the second/heritage language learners can have difficulty with in learning the target language and the tools to promote their learning. Her works not only contribute to the field of second language acquisition/processing/pedagogy but also inform language teaching professionals and developers of language teaching software about the second language learners’ target language use.