This paper investigates the theoretical and empirical properties of a model of aggregate supply behavior that was introduced in the 1970s but has received inadequate attention. The model postulates that price changes occur so as to gradually eliminate discrepancies between actual and...

Should central banks, because of the zero-lower-bound problem, raise their inflation-rate targets? Several arguments are relevant. (1) In the absence of the ZLB, the optimal steady-state inflation rate, according to standard New Keynesian reasoning, lies between the Friedman-rule value of...

This paper proposes forward convergence as a model refinement scheme for linear rational expectations (LRE) models and an associated no-bubble condition as a solution selection criterion. We relate these two concepts to determinacy and characterize the complete set of economically relevant...

Linear RE models typically possess a multiplicity of solutions. Consider, however, the requirement that the solution coefficients must not be infinitely discontinuous in the model's structural parameters. In particular, we require that the solutions should be continuous in the limit as those...

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=AM_HTMLorMML-full"></script>Consider a rational expectations (RE) model that includes a relationship between variables `x_t` and `z_(t+1)`. To be considered structural and potentially useful as a guide to actual behavior, this model must specify whether `x_t` is influenced by the expectation at t of `z_(t+1)` or,...

Much recent analysis of international monetary and fiscal policy issues, such as the choice of an exchange-rate regime or the design of a policy coordination scheme, has been conducted by stochastic simulations with multicountry econometric models. In these studies it has become standard...

The main section of this paper discusses competing theories of aggregate supply that are currently being utilized in macroeconomic models with rational expectations. The distinction between flexible-price equilibrium models and models with nominal contracts is emphasized and three models of the...

Many macroeconomic models involving rational expect at ions give rise to an infinity of solution paths, even when the models are linear in all variables. Some writers have suggested that this non-uniqueness constitutes a serious weakness for the rational expectations hypothesis. One purpose of...

This paper argues, first, that it is inappropriate to presume that central banks will, in the absence of any tangible precommitment technology, inevitably behave in a `discretionary' fashion that implies an inflationary bias. Furthermore, there is no necessary tradeoff between `flexibility and...

In analyses of "liquidity trap" problems associated with the zero lower bound (ZLB) on nominal interest rates, it is important to emphasize the difference between policy rule changes, intended to help escape an existing ZLB situation, and maintained policy rules designed so as to avoid ZLB...