Post-Keynesian Economics are the economics that succeed to the tradition of "Economics of Welfare" that the Cambridge schoool advocated and have developed it. In the history of the economic, it is based on Marshall's Biological Economics and J.M Keynes “General theory” and “Monetary theory” which are the money production theory of employment. And it is a generic name of economics that "Economic system for the market and the plan" by M.Caretski who is a simultaneous discoverer of “Kalecki theory”, "Theory of production" by P.Sraffa, and "Economics research on the evolution of the system" by Veblen who is the founder of Institutional Economics in the USA.

An economic thesis background of the Ogata laboratory started from the research of macroeconomics and micro bases of macroeconomics by Prof. Kawaguchi’s 'Keynesian economics research' and 'Finance theory'. In addition, a chance of going abroad to study in Britain and the United States has expanded the theory and thought. The result has been brought together in the main work “Undercurrent of the modern economics: Marshall Keynes Kalecki” (Chuo University Publication Service, 1995).

At the Cambridge University, studying under Prof. J. Robinson and Prof. N. Kaldor, Keynesian "Generalization of the general theory" has been advanced. At United States New Jersey State Rutgers University, I belonged post Keynesianism research organization (note 1) which was organized by Prof. Davidson, Prof. Eichner, Prof. Kregel and I was in the member of the editorial staff of economics magazine called Journal of Post Keynesian Economics. Moreover, organized "Post Keynesian economics research society" in Japan and a series of post Keynesian library is published from the Japanese publisher.

(note 1) "Trend of the post Keynesian research in the United States" by Toshio Ogata in “Economic Research Institute Annual Report” (No.12, 1981).