公共選択から立憲的政治経済学へ―J.M.Buchananの苦悩と挑戦―

抄録

Although Buchanan is normally best known for the pioneering work he has done to establish the sub-discipline of public choice as a part of mainstream economics, it is probably accurate to say that much work published in the sub-discipline and in the journal Public Choice is crucial distance removed from Buchanan's own approach to the study of collective decision making. While a significant proportion of the scholars working in the sub-discipline and publishing in Public Choice engage in formal mathematical modeling of political decision-making, Buchanan's work has had the institutional and constitutional orientation from the beginning of his career.

　To understand two fundamental questions for Buchanan, "What should economists do?" and "Why must economics be Constitutional Political Economy?," it is inevitable to exactly know his methodology of political economy as "science of exchange" and "catallactics," characterized by radical subjectivism, methodological and normative individualism, and the economy as a constitutional order.