Introduces Dango, a 1.8B strictly L1-only LLM using corpus filtering and lesson fine-tuning to simulate Japanese-to-English SLA and produce human-like L2 output patterns.
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Empirical analysis of student logs shows multiple-choice questions easiest, cloze hardest for recall, drag-and-drop slowest, and CEFR-J levels predict declining accuracy with rising response times.
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Dango: A Strictly L1-Only Large Language Model for Studying Second Language Acquisition
Introduces Dango, a 1.8B strictly L1-only LLM using corpus filtering and lesson fine-tuning to simulate Japanese-to-English SLA and produce human-like L2 output patterns.
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Question Type, Cognitive Load, and CEFR Alignment: Evaluating LLM-Generated EFL Grammar Drill Exercises
Empirical analysis of student logs shows multiple-choice questions easiest, cloze hardest for recall, drag-and-drop slowest, and CEFR-J levels predict declining accuracy with rising response times.