Bachelor in Economics, Hitotsubashi University, Kunitachi, Tokyo, 1972. Master of Arts in Economics, University Rochester, 1978. Doctor of Philosophy in Economics, University Rochester, 1979.
Assistant professor Hitotsubashi University, Kunitachi/Tokyo, 1981-1983, associate professor, 1983-1990, professor economics, since 1990.
Member The Econometric Society, Society for Promotion of Economic Theory, Nihon-Keizai-Gakkai.
Married Masayo Kiyohara, December 12, 1981. Children: Midori, Yuichi.