Macroeconomic Analysis Without the Rational Expectations Hypothesis
提出一个临时均衡框架,允许多种预期设定,在理性预期极限下退化为标准新凯恩斯模型,并用此框架对比不同放松理性预期假设的方式,讨论其对货币政策规则选择、李嘉图等价和通缩陷阱的影响。
The article presents a temporary equilibrium framework for macroeconomic analysis that allows for a wide range of possible specifications of expectations but reduces to a standard new Keynesian model in the limiting case of rational expectations. This common framework is then used to contrast the assumptions and implications of several different ways of relaxing the assumption of rational expectations. As an illustration of the method, the implications of alternative assumptions for the selection of a monetary policy rule are discussed. Other issues treated include the conditions required for Ricardian equivalence and for existence of a deflation trap.