Little empirical research has examined the cause of language shift or the factors related to the heritage language (HL) development of language minority groups. This study investigates the factors that facilitate or inhibit the HL development of second-generation Korean Americans, with a focus on adolescent HL learners, who go through phases in…

Heritage languages (HL) are language spoken by the children of immigrants or by those who immigrated to a country when young. The purpose of this article is to briefly review what is known about heritage language development over time and to identify some gaps in people's knowledge. In this article, the authors consider three aspects: how much HL…