This paper contributes to the debate on the implication of market integration in fostering innovations. In contrast to the literature, we use a model of vertical product differentiation and formalize the speed of response to market integration as a first mover advantage in R&D. If the domestic...

We examine pollution-reducing R&D by a monopoly firm producing a dirty product. In a dynamic framework with hyperbolic discounting, we establish conditions under which the Porter hypothesis goes through, i.e. environmental regulation increases R&D, thus reducing pollution, as well as increasing...