This article describes three approximation methods I used to solve the growth model (Model 1) studied by the National Bureau of Economic Research's nonlinear rational-expectations-modeling group project, the results of which are summarized by Taylor and Uhling (1990). The methods involve...

I present an undetermined coefficients method for obtaining a linear approximating to the solution of a class of dynamic, rational expectations models. I also show how that solution can be used to compute a model's implications for impulse response functions and for second moments. Copyright...

This paper studies P. Cagan's model of the German hyperinflation under the hypothesis that adaptive expectations are rational. It shows that inference about the key money demand elasticity parameter, a, is very senstitive to the specification of the dynamic interaction of the unobserved money...

It has been suggested that existing estimates of the long-run impact of a surprise move in income may have a substantial upward bias due to the presence of a trend break in postwar U.S. gross national product data. This article shows that the statistical evidence does not warrant abandoning the...

This paper develops the quantitative implications of optimal fiscal policy in a business cycle model. In a stationary equilibrium, the ex ante tax rate on capital income is approximately zero. The tax rate on labor income fluctuates very little and inherits the persistence properties of the...