- 2020 - 2023 Social History of Comparative Education --q study of the project-approach
- 2018 - 2022 A Study on the Pedagogical Documentation and ECEC Teacher Networks
- 2017 - 2020 The Development of the Theory and Practice of Project Approach in Early Childhood Education; Genealogy of Innovation of ECE in Europe and Japan
- 2015 - 2020 A Study on the Fundamental Reorganization of Literacy in Japan Before and After Modernization
- 2011 - 2015 A Historic Formation Process of the Literacy in Japan and Substantial Study on Transformation of the Learning
- 2006 - 2009 A historical research on distribution and expansion of literacy in pre-modern Japan
- 2006 - 2009 A General Study of Child-rearing Culture based on Diaries in the Early Modern Period Japan ; to clarify the periods, strata and localities
- 2004 - 2006 19世紀日本人の伝記研究
- 2004 - 2006 A social history of biographies around 19century in Japan
- 2004 - 2006 A Study on History of Human Development in " Ie " (Traditional Family) and Home
- 2001 - 2004 17-20世紀日本の子育て意識・慣行の変容に関する研究
- 2001 - 2004 Historical study on changeness of child-realing around 17-20 century in Japan.
- 2001 - 2004 A comparative research into the consciousness of seeing children as a treasure and the culture of child-rearing in agricultural villages in Japan in 18th and 19th centuries ; Using materials of Diaries, Account Books of Gifts and Local Documents.
- 子ども期の成育儀礼に関する歴史的研究
- 近世日本の嬰児殺しの習俗について
- Historical study on rites of passage and childhood
- Study on low-fertility in Tokugawa Japan
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