Morphosyntactic Knowledge in Late Second Language Learners and Heritage Speakers of Russian
The current study pursues two goals. First, it establishes developmental trajectories in the acquisition of 10 morphosyntactic features of Russian by American learners, using a grammaticality judgment task (GJT), an offline test of morphosyntactic knowledge that allows for direct comparison of native and nonnative performance through a highly controlled set of materials. Second, it compares the performance of late second language learners and heritage speakers (early learners) of Russian matched in global proficiency as established by the ACTFL Oral Proficiency Interview (OPI), and ranging from Intermediate to Superior proficiency. The study demonstrates that heritage speakers outperform late second language learners on most, but not all the morphosyntactic features tested in the GJT. These findings shed new light on the development of nonnative grammatical knowledge in early and late learners of Russian, and will inform Russian language curriculum development.