How parents’ perceived value of the heritage language predicts their children’s skills

The growing field of family language policies (FLPs), defined as overt and explicit planning in relation to language use among family members, has garnered increasing interest. FLPs influence child–caretaker interactions and are closely linked to child language development and acquisition. This study investigates the impact of FLPs on children’s proficiency in their heritage language (HL). Employing a multi-method approach, we conducted semi-structured interviews with 53 multilingual parents to explore their beliefs, ideologies, and language management within the family context. Concurrently, their children were administered standardized tasks in their heritage language (HL) to assess receptive vocabulary skills and morphosyntactic comprehension. Our findings indicate that parents’ perceived value of the HL significantly correlates with their children’s language performance, going beyond the influence of reported domestic language usage.