Models with heterogeneous interacting agents explain macro phenomena through interactions at the micro level. We propose genetic algorithms as a model for individual expectations to explain aggregate market phenomena. The model explains all stylized facts observed in aggregate price fluctuations...

In dynamic economic models derived from optimization principles, the forward equilibrium dynamics may not be uniquely de…fined, while the backward dynamics is well de…fined. We derive properties of the global forward equilibrium paths based on properties of the backward dynamics. We propose...

We present results from 50-rounds experimental markets in which firms decide repeatedly both on price and quantity of a perishable good. The experiment is designed to study the price-quantity setting behavior of subjects acting as firms in monopolistic competition. In the implemented treatments...

We introduce a simple equilibrium model of a market for loans, where households lend to firms based on heterogeneous expectations about their loan default probability. Agents select among heterogeneous expectation rules, based upon their relative performance. A small fraction of pessimistic...

We introduce a simple equilibrium model of a market for loans, where households lend to firms based on heterogeneous expectations about their loan default probability. Agents select among heterogeneous expectation rules, based upon their relative performance. A small fraction of pessimistic...

We present results from 50-rounds experimental markets in which firms decide repeatedly both on price and quantity of a perishable good. The experiment is designed to study the price-quantity setting behavior of subjects acting as firms in monopolistic competition. In the implemented treatments...

See also the publication 'Bifurcation Routes to Volatility Clustering under Evolutionary Learning' in the 'Journal of Economic Behavior & Organization'. Volume 67(1), pp. 27-47.<P> A simple asset pricing model with two types of adaptively learning traders,fundamentalists and technical analysts, is...</p>

This discussion paper led to a publication in the 'European Economic Review' (2013). Vol. 61, pp. 186-204.<P> Rational Expectations (RE) models have two crucial dimensions: 1) agents correctly forecast future prices given all available information, and 2) given expectations, agents solve...</p>

The way in which individual expectations shape aggregate macroeconomic variables is crucial for the transmission and effectiveness of monetary policy. We study the individual expectations formation process and the interaction with monetary policy, within a standard New Keynesian model, by means...