- 2022 - 2026 The Database Construction of Correct Use and Misuse in Considerate Expressions for the Dictionary of Japanese Considerate Expressions
- 2022 - 2026 The Construction of Multi-language Considerate Expressions Database and the Compilation of Considerate Expressions Dictionary
- 2020 - 2025 Interdisciplinary study on the mechanism of the occurrence, continuation and resolution of out-of-school and school refusal of foreign children in Japan
- 2018 - 2022 The Database Construction of Correct Use and Misuse in Considerate Expressions for the Dictionary of Japanese Considerate Expressions
- 2017 - 2022 Basic research on language operations related to the politeness of learners of Japanese.
- 2014 - 2020 A Community-based Participatory Research for Making an Elderly Life Plan Considering the Cultural Diversity of Foreign Residents
- 2014 - 2020 Comparative Sociological Study on the Mechanism of Continuation and Elimination of Out-of-School Situation of Children of Foreign Residents
- 2013 - 2017 A comparative study on the use of consideration expression of Japanese by Japanese native speakers and foreign Japanese learners
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