Abstract The selected papers collected in this special issue were presented at the “Interacting agents and nonlinear dynamics in macroeconomics” workshop organized by Marji Lines , Sebastiano Manzan, and Frank Westerhoff which was held at the University of Udine, Udine (Italy), on June 9-11,...

We propose a simple Keynesian business cycle model in which national income expectations of heterogeneous interacting investors affect their investment decisions. The investors' expectation formation is influenced by their sentiment: investors who hold optimistic views about the future state of...

We develop a simple two-region, cobweb-type dynamic partial equilibrium model to demonstrate the existence of optimal, possibly non-zero, trade barriers. A pure comparative statics analysis of our model suggests that a reduction of trade barriers, modeled as small but positive import tariffs,...

We present a simple financial market model with interacting chartists and fundamentalists. Since some speculators only become active when a certain misalignment level has been crossed, the model dynamics is driven by a discontinuous piecewise linear map. Recent mathematical techniques allow a...