In a simple, forward looking univariate model of price determination we investigate the evolution of endogenous predictor choice dynamics in presence of two types of agents: fundamentalists an chartists. We find that heterogeneous equilibria in which fundamentalists and chartists coexist are...

In a linear stochastic forward-looking univariate model with predetermined variables, we consider the possibility of heterogeneous equilibria with sunspots emerging endogenously through adaptive learning and replicator dynamics. In particular, we investigate equilibria where only a fraction of...

In a model of incomplete, heterogeneous information, with externalities and strategic interactions, we analyse the possibility of adaptive learning to act as coordination device. We build on the framework introduced by Angeletos and Pavan (2007) and extend it to a setting where agents need to...

In a simple, forward looking linear stochastic model we investigate the impact of heterogeneity in expectations formation on the speed of convergence of the learning process of agents towards equilibrium. We …nd that even when heterogeneity does not a¤ect learnability in term of its...

We explore real time, adaptive nonlinear learning dynamics in stochastic macroeconomic systems. Rather than linearizing nonlinear Euler equations where expectations play a role around a steady state, we instead approximate the nonlinear expected values using the method of parameterized...

In this work we analyze a credit economy à la Kiyotaki and Moore (JPE, 1997) enriched with learning dynamics. Both borrowers and lenders need to make expectations about the future price of the collateral, and under heterogeneous learning this can have interesting consequences for the economy...

The optimal discretionary policy rule in the New Keynesian forwardlooking model under the hypothesis of rational expectations responds only to fundamental shocks. This leads to indeterminacy of equilibria and E-unstability of the MSV REE. The outcome can be improved by responding to private...

In recent literature on monetary policy and learning, it has been suggested that private sector’s expectations should play a role in the policy rule implemented by the central bank, as they could improve the ability of the policymaker to stabilize the economy. Private sector’s expectations,...

In recent literature on monetary policy, it has been argued that a sensible policy rule should be able to induce learnability of the fundamental equilibrium: if private agents update their beliefs over time using adaptive learning technques, they should be able to converge towards rationality....

The literature on bounded rationality and learning in macroeconomics has often used recursive algorithms such as least squares and stochastic gradient to depict the evolution of agents' beliefs over time. In this work, we try to assess the plausibility of such practice from an empirical...