Textbook authors frequently assert that their materials offer a comprehensive and authentic representation of language, mirroring real-life communication. This study critically examines these assertions by conducting a large-scale comparative analysis of Turkish as a Foreign Language (TFL) materials, specifically the Yeni İstanbul series, against a 5-billion-word reference corpus (trTenTen20), the Turkish National Corpus (TNC). The findings reveal substantial discrepancies in word frequency and a lack of natural-sounding collocations within textbooks, suggesting that reliance on author intuition alone may limit a learner’s exposure to the richness and diversity of authentic Turkish.
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Hakan Cangır (2026) studied this question.
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