This paper examines the role of heterogeneous beliefs in a cobweb model. We proceed in two stages. First, two groups of agents are distinguished. They are either fundamentalists, or chartists. The latter specify the expected price from an adaptive process, the former have a "rational behaviour"....

In an OG model with competition à la Cournot, we show the existence of a stable 2-cylcle (in prices and employment levels) in the forward dynamics with learning.

We consider the general equilibrium of an economy with Cournot competition in the product market. In this framework, firms endowed with market power are assumed to know the true or objective demand function. However, depending on the economy's structure, the demand function varies with the size...

We study the link between involuntary unemployment and income feedback effects in a model with an imperfect product market. We provide a condition based on the demand such that full employment prevails when income feedback effects are neglected, while involuntary unemployment appears when they...