“凯恩斯革命”与主流经济学的关系

学术界关于"凯恩斯革命"与主流经济学的关系有着不同的认识,并常有"凯恩斯革命"是对传统主流经济学(即新古典经济学)否定的提法。实际上,"凯恩斯革命"对主流经济学的范式作出调整是出于时代的需要。它修正的仅仅是与干预经济生活的政策相抵触的部分前提假设(操作范式),并未否定西方主流经济学硬核中的观念范式和规则范式。"凯恩斯革命"是西方经济思想发展中一次重要的范式转换,它将传统主流经济学完全理性经济人的前提假设调整为未来是不确定的有限理性假设,并以此调整后的假设作为其经济学理论体系的前提,演绎出了边际消费倾向递减、资本边际效率和流动性偏好这三大心理法则,创建了"有效需求不足原理"为核心的宏观经济学体系。"凯恩斯革命"不仅使当时西方主流经济学完成了从微观向宏观的飞跃,而且将古典经济学的货币与实物经济的二分法融为一体,形成了货币与经济一体化的现代宏观经济学模型体系,开创了宏观经济学的新纪元。

On the Relation between Keynes Revolution and Mainstream Economics

In the academic field,there exists different understanding of the relation between Keynes revolution and mainstream economics,and there is often the argument that Keynes revolution is the negation of traditional mainstream economics.Actually,Keynes revolution's adjustment of mainstream economics' fomular is due to the time's need.In other words,it only modifies part of hypothesis that contradicts policies of intervening to economy,but not deny the concept fomular and regulation fomular in western mainstream economics.Keynes revolution is an important transformation of fomular in western economic thingking,which adjusts the hyphothesis of absolute rational economy in traditional mainstream economics to uncertain and limited rationality,which is regarded as the prerequisite of his economic theoretical system.In a word,Keynes revolution opens the era of macro-economics.