In general equilibrium models with oligopolistic firms, equilibrium outcomes may depend on the choice of numeraire. When firms have the power to influence prices strategically, different price normalisations entail objective profit functions which are generally not monotone transformations of...

The production of health does not only depend on the medical services supplied by the physi-cian but is also influenced by the patient’s compliance. A model of medical treatment is pre-sented in which both the actions of physician and patient are modeled as a productive input. The analysis...

This paper presents the stylized facts of open source software innovation and provides empirical evidence on the impact of increased competition by OSS on the innovative activity in the software industry. Furthermore, we introduce a simple formal model that captures the innovation impact of OSS...

The paper studies equilibria for economies with imperfect competition and non-convex technologies. Following Negishi firms maximise profits under downward-sloping perceived demand functions. Negishi's assumptions, in particular the assumption of a single monopolistic competitor in each market,...

We analyze the behavior of a monopolistic firm in general equilibrium when the firm's decision are taken through shareholder voting. We show that, depending on the underlying distribution, rational voting may imply overproduction as well as underproduction, relative to the efficient level. Any...

We analyze the role of imperfect competition in explaining the relationship between temporary surges in trade-volumes and the level of cooperation in trade policy that can be sustained between countries in a repeated game framework. Imperfectly competitive markets are characterized by a mark-up...

A stylized pattern of interindustry trade between developing and developed regions identifies the former as specialists in light manufactures and latter in heavy manufactures. Conventional explanations for this pattern rely on the factor proportions model, which is empirically suspect. This...

The paper considers the legacy for modern macroeconomics of Kalecki’s theory of income determination. The latter is reconstructed in its analytical constituent parts referring in detail to the original sources. The critical appraisal of its historical relevance is made from the vantage point...

We study the implementation of constrained-efficient allocations in labour markets where a basic coordination problem leads to an equilibrium matching function. We argue that these allocations can be achieved in equilibrium if wages are determined by ex post bidding. This holds true even in...

This is a commentary on Vernon Smith's contributions to experimental economics