Bachelor in Economics, Rikkyo University, Japan, 1972. Master of Arts in Economics, City University of New York, 1978. Doctor of Philosophy in Economics, City University of New York, 1981.
Assistant professor City University of New York, New York City, 1982—1986, associate professor, 1986—1988, University of Tsukuba, Japan, 1988—2000, professor Japan, since 2000. Researcher National Bureau of Economic Research, New York City, 1982—1994.
Married Nobuko Tomida, January 14, 1949. Children: Yuki, Chihiro.