对菲利普斯曲线不稳定性的一种新解释

A New Explanation on the Instability of Phillips Curve

通货膨胀率和失业率之间关系,是菲利普斯曲线描述的基本内容,也是经济学争论的焦点之一。在所有有关菲利普斯曲线的讨论中,假定劳动供给曲线是正斜率曲线是一个基本前提。但劳动供给曲线不一定是正斜率,它既可能是正斜率、负斜率,也可能是水平或垂直线,正是由于劳动供给曲线的不稳定性,导致了通货膨胀率和失业率之间关系的不稳定,因此依据菲利普斯曲线来决策并不可靠。

The relation between inflation and employment rate, is expressed by Phillips Curve, and also is one of the focuses of debates of economics. In all of the explanation on Phillips Curve , labor supply curve is positive, is a basic condition , but the labor supply curve is not absolute positive. The labor supply curve may be a positive, negative, vertical or perhaps horizon curve. It is the instability of labor supply curve that leads to the instability of Phillips Curve, so decision made according to Phillips Curve, is not creditable.