We present an extensive analysis of the consequences for global equilibrium determinacy in flexible-price open economies of implementing active interest rate rules, i.e., monetary rules where the nominal interest rate responds more than proportionally to inflation. We show that conditions under...

This paper surveys the evidence on the effectiveness of monetary transmission in low-income countries. It is hard to come away from this review with much confidence in the strength of monetary transmission in such countries. We distinguish between the "facts on the ground" and "methodological...

I introduce "Expectational Business Cycles" where output fluctuates due to learning, heterogeneous forecasting models and random changes in the efficient forecasting model. Agents use one of two forecasting models to forecast future variables while heterogeneity is dictated via an evolutionary...

L’évaluation du prix des actifs est un problème récurrent en économie. Cette question se pose dans le domaine de l’immobilier comme dans d’autres domaines. Après une très forte phase de croissance, le marché immobilier américain a été touché à partir du mois de juin 2007 par...

We resolve the non-existence pathologies of dynamic rational expectations equilibria attributed to signal extraction from endogenous variables first discovered by Futia (1981). Non-existence is overturned once it is recognized that rational agents take into account the structure of the model...

This paper revisits the generalized adaptive expectations (GAE) mechanism presented by Shepherd (2012) [When are adaptive expectations rational? A generalization, Economics Letters, 115, 4–6]. It provides the precise conditions under which GAE hold, and also discusses its implications for the...

This paper models expectation formation by taking into account that agents may produce heterogeneous expectations because of informational frictions and differing levels of a capacity to process information. We show that there are two general classes of steady states within this framework: those...

A long tradition suggests a fundamental distinction between situations of risk, where true objective probabilities are known, and unmeasurable uncertainties where no such probabilities are given. This distinction can be captured in a Bayesian model where uncertainty is represented by the agent's...

The first of these essays was written for a happy occasion – my acceptance of honorary membership in the European Society for the History of Economic Thought. The second marked an altogether sadder event - the death of Mark Blaug. Though at first sight their topics are very different, both in...

This collection of essays uses the lens of rational expectations theory to examine how governments anticipate and plan for inflation, and provides insight into the pioneering research for which Thomas Sargent was awarded the 2011 Nobel Prize in economics. Rational expectations theory is based on...