Standard international trade lectures normally comprises three central theories: the Ricardian Model, the Heckscher-Ohlin-Samuelson Modell and New Trade Theory `a la Krugman 1979 and 1980. Nowadays this trilogy needs to be enhanced with the basic concepts of a new class of trade models: the New...

We develop a model of vertical innovation in which firms incur a market entry cost and choose a unique level of quality. Once established, firms compete for market shares, selling to consumers with heterogeneous tastes for quality. The equilibrium of the pricing game exists and is unique within...

The protection of intellectual property rights (IPR) and the distribution of rent are central issues in R&D-based growth models with the return to innovation serving as the engine of growth. In this paper the authors consider the strength of the intellectual property rights and franchise...

This paper analyzes a dynamic, Ricardian model of international trade in which relative differences in technology are endogenously determined by investments in innovation by competitive firms. It considers the impact of these investments on trade patterns and the effect of trade patterns on...

We present a discrete-time version of an otherwise standard Schumpeterian growth model. Discrete time exhibits two important differences from continuous time. First, the probability of successful innovation cannot be homogeneous of degree one in inputs. A natural R&D analogue to constant returns...

Why is it that exporter productivity premia (EPP) differ so widely in size? We take this question to the theory and to the data. We derive the sectoral EPP in a standard heterogeneous firms trade model and apply the insights from the model to 13 years of data for all Danish manufacturing firms....

Intra-industry trade has a paramount value in the theory of international trade due to the reason that it establishes the base for exploiting economies of scale and product differentiation, which ultimately ensures the existence of comparative advantage. The current research is an endeavour to...