1969.4 tokyo educational study institution 1976.4 soka university education department; full time lecturer 1980.4 soka university education department; associate professor 1980.4 chuou university literrature department; part-time lecturer 1985.4 ochanomizu women university part-time lecturer 1986.4 soka university education department professor 2001.4 touyo university literrature department;part-time lecturer 2008.4 soka university graduate school of teacher education professor