宏观经济模型的时间框架

On the Temporal Framework of Macroeconomic Model

从个人最优化行为出发构建理论模型是现代宏观经济分析的主流方法,因此,对个人存续时间的假定(时间框架)成为宏观经济模型的一个基本要素。宏观经济模型的基本时间框架包括无穷期框架和世代交叠框架,以及处于两者之间的跨代利他框架、寿命不确定框架。不同的分析框架在财政赤字的影响、竞争市场的效率等重要问题上存在显著差异。

Constructing model from individual optimization has become the mainstream in macroeconomics; therefore assumption about individual lifespan is one of the basic elements in macroeconomic model. The basic temporal frameworks of macroeconomic model include infinite horizon and overlapping generations, and their variants: twosided altruism and lifespan uncertainty. Different framework has different implications on the effect of deficit, dynamic efficiency, etc. 