Original/Developing-Type
- Form and Meaning in Japanese Complex Sentence Constructions
- Analyzing Large-Scale Dialectal Survey Data from Multiple Perspectives
- Historical Research on Japanese Grammar
- Contact Dialectology and Sociolinguistic Typology
- Study on Documents and Languages for Designing a Corpus of Modern Japanese
- Compilation of Japanese Basic Verb Usage Handbook for JFL Learners
- Interdisciplinary Study on Learning Japanese and the Reality of Language Life of Foreign Permanent Residents in Japan
