Sunny K. Park-Johnson is Associate Professor in the College of Education and Director of the Bilingual Language Development Lab at DePaul University, USA. Her research investigates aspects of Korean-English bilingualism and Korean as a heritage language, including morphology, syntax and code-switching.

This overview of the linguistic development of Korean-English bilingual children in the US focuses on morphology and syntax acquisition in early childhood, a time when language dominance is shifting rapidly. It expands our understanding of heritage language acquisition and furthers bilingualism research on typologically distinct language pairings.