In Ulph (2002) I analysed how the possibility of future resolution of uncertainty about damage costs affected the incentives and timing for countries to join a self-enforcing international environmental agreement (IEA). I analysed two membership rules – fixed (countries commit whether to join...

Much of the recent empirical work on the impact of unions on R&D is based on a theoretical model which predicts that (i) unions have a negative impact on R&D; (ii) under some circumstances an increase in union strength can make both firms and unions worse off. We survey a more recent theoretical...

In this paper, we develop a model of advertising in a differentiated duopoly in which firms first decide how much to invest in cooperative or predatory advertising and then engage in product market competition (Cournot or Bertrand). We then use this model, with endogenously determined type of...

In this paper I address the question of how uncertainty about damage costs and the possibility of resolving that uncertainty in the future affects the incentives for countries to join an international environmental agreement. I use a two-period model with a stock pollutant where the number of...

This paper examines the optimal design of climate change policies in the context where governments want to encourage the private sector to undertake significant immediate investment in developing cleaner technologies, but the carbon taxes and other environmental policies that could in principle...

There are a number of features of climate change which make it one of the most challenging problems confronting policy makers and policy analysts. In this paper we consider three such features: (i) climate change is a global pollutant so there are strategic interactions between governments over...