“…DOM requires integration of syntax, semantics, morphology, discourse and related interfaces (Montrul 2011;Sorace 2011;Avram & Tomescu 2020), and is susceptible to dominant language transfer in bilingualism in general. There is increasing evidence from heritage languages that this is the case: Montrul, Bhatt & Bhatia (2012), Montrul, Bhatt & Girju (2015), Bhatia & Montrul (2020), and confirmed that obligatory DOM is often omitted by heritage speakers of Spanish, Hindi, and of Romanian in the United States. By contrast, Yager et al (2015) and Rodríguez-Ordóñez (2017) show that DOM emerged as an innovation in heritage speakers of German in the United States, and in Basque-Spanish bilinguals in Spain.…”