Master of Philosophy, Osaka University, 1970. Doctor of Philosophy, Seiwa University, Nishinomiya, Japan, 1997.
Lecturer education Osaka Kyoiku University, Ikeda, 1978-1980, associate professor, 1980-1991, professor, since 1991. Lecturer Kyoto (Japan) University, 1996-1999, Seiwa University, since 1996.
Member Japanese Association for Education of Young Children (board directors since 1997).
Married Akiko Tanaka. Children: Junsuke, Yuko.