The Causal Relationship Between L1 Knowledge and Academic English-Speaking Proficiency
The Causal Relationship Between L1 Knowledge and Academic English-Speaking Proficiency
Keywords:
L1 Knowledge, English Speaking Proficiency, Academic English, Metalinguistic Awareness, Cognitive Academic Language Proficiency, Multilingual CompetenceAbstract
This article presents an integrated theoretical framework to explore the causal relationship between first language (L1) knowledge and academic English-speaking proficiency, analyzed through a synthesis of perspectives from psycholinguistics, sociolinguistics, and cognitive theory. The findings reveal that the relationship is not a simple linear transfer, but rather a dynamic feedback system influenced by cognitive, pragmatic, and developmental factors of learners. The proposed Hierarchical Transfer Model (HTM) explains the complex pathways of transfer through three key mechanisms:
Metalinguistic Awareness Transfer (MAT): enabling abstract linguistic knowledge to cross language boundaries, Cognitive Academic Language Proficiency Cross-pollination (CALP-CP): demonstrating how complex thinking in the mother tongue supports the construction of academic discourse in English, and Pragmatic Competence Bridging (PCB): showing how culturally embedded patterns of communication shape the quality of academic English speaking.
Furthermore, the study extends the causal modeling by introducing the Integrated Linguistic-Cognitive Nexus Model (ILCN), which highlights the bidirectional relationship between L1 and L2, while also accommodating modifying factors such as learners’ L2 proficiency level and the typological distance between languages. This model not only strengthens theoretical explanations but also provides practical insights for language pedagogy, emphasizing the strategic integration of L1 to enhance learners’ metalinguistic awareness, in contrast to traditional English-only approaches. The new conceptual framework carries significant implications for curriculum design, teaching methodology, and language policy in the era of globalization, aiming to advance new knowledge that transcends traditional theories in language education.
The article also demonstrates clearly that L1 knowledge is not merely a starting point but a powerful causal driver that enhances academic English-speaking proficiency through the transfer of cognitive skills, vocabulary, and metalinguistic awareness. The development of this integrated model not only addresses theoretical gaps but also generates new knowledge capable of elevating language teaching and learning at an international level. Moving beyond the view of L1 as a limitation toward recognizing its potential in fostering academic strength in English represents a critical paradigm shift and lays a foundation for future research and practice.
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