科斯定理、个性理性与经济效率：对科斯定理的重述

Coase Theorem,Individual Rationality and Economic Efficiency:A Restatement of the Coase Theorem

科斯定理并没有对新古典微观经济学的基本结构产生影响,这非偶然。标准版本的科斯定理使人们很容易将注意力放在"不同的产权安排会导致相同的效率结果"这个点上而更多地成为法学界关注的对象。为了将科斯定理与经济学的联系更好地凸显出来,有必要从传统的理性人—效率的视角出发对其加以重述。经重述后的科斯定理不仅恢复了个体理性在经济学中的核心地位,而且,通过引入交易成本这个现实维度,将个体理性从新古典微观经济学中理想化的世界中解放了出来,成为具有现实意义和分析价值的概念。

It is not accidental that Coase Theorem did not bring about a complete change to the basic structure of neoclassical microeconomics.The standard version of Coase Theorem makes one easily focus on the'invariant proposition',namely, different property rights arrangement would not lead to different efficiency result, thus intriguing largely lawyers rather than economists.It is necessary to restate the Coase Theorem from the traditional rationality-efficiency perspective,if one wishes to highlight its bearing on economics.By way of our restatement,not only is the core status of individual rationality recovered in economics,moreover,because of the introduction of the transaction costs dimension,the individual rationality is e- mancipated from the ideal world of neoclassical microeconomics,and becomes a reality-relevant and analytically useful concept.