Exploratory randomized controlled trial assessed heritage language development in immigrant families, indicating potential benefits.
Purpose This exploratory randomized controlled trial evaluated the efficacy of a heritage language intervention for dual language learners (DLLs) with a migration background. The primary objective was to assess the intervention´s impact on heritage language development; a secondary objective was to explore its effects on the languages of instruction at school.
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Abreu et al. (2025) studied this question.
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