- 2018/04 - 現在 Joetsu University of Education Professor emeritus
- 2016 - 2018/03 Tokyo Kasei Gakuin University Faculty of Home Economics
- 2012 - 2016 Joetsu University of Education
- 2003 - 2012 Joetsu University of Education College of Education
- 2003 - - Professor, Demonstration and Research Center
- 1995 - 2002 国立特殊教育総合研究所重複障害教育研究部 研究室長
- 1995 - 2002 Head, Deafblind Education Research Unit,
- 1991 - 1995 国立特殊教育総合研究所重複障害教育研究部 主任研究官
- 1991 - 1995 Senior Researcher, Deafblind Education
- 1980 - 1991 国立特殊教育総合研究所重複障害教育研究部 研究員
- 1980 - 1991 Researcher, Deafblind Education Research Unit,
- 1989/11 - 1990/08 University of Washington, Seattle Child Development and Mental Retardation Center Visiting Scholar
- 1978 - 1980 International Christian University Division of Education, College of Liberal Arts
- 1978 - 1980 Reseach Associate, College of Liberal Arts,
- for the Hndicapped, College of Education,
- Children with Multiple Disabilities
- Research Unit, Department of Education for
- Multiple Disabilities
- Department of Education for Children with
- International Christian University