- 1992/04 - University of Yamanashi Graduate Faculty of Interdisciplinary Research Faculty of Education, Education (Childhood developmental education)
- 1989/05 - 文部省在外研究員
- 1980/06 - University of Yamanashi Graduate Faculty of Interdisciplinary Research Faculty of Education, Education (Childhood developmental education)
- 1977/06 - University of Yamanashi Graduate Faculty of Interdisciplinary Research Faculty of Education, Education (Childhood developmental education)
- 1975/04 - 東京教育大学助手(文学部)
- University of Yamanashi Faculty of Education and Human Sciences, Cultural Studies Course
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