Innovation is typically a trial-and-error process. While some research paths lead to the innovation sought, others result in dead ends. Because firms benefit from their competitors working in the wrong direction, they do not reveal their dead-end findings. Time and resources are wasted on...

We present a continuous-time generalization of the seminal R&D model of d'Aspremont and Jacquemin (American Economic Review, 1988) to examine the trade-off between the benefits of allowing firms to cooperate in R&D and the corresponding increased potential for product market collusion. We...

In an economy where growth is determined by the interaction of R&D and learning-by-doing (LBD), changes of factors that stimulate either one of these activities affect growth differently than in an economy where growth is determined by either R&D or LBD alone. In particular, when firms...

We present a continuous-time generalization of the seminal R&D model of d'Aspremont and Jacquemin (The American Economic Review 78(5): 1133-1137, 1988) to examine the trade-off between the benefits of allowing firms to cooperate in R&D and the corresponding increased potential for product market...

In an economy where growth is determined by the interaction of R&D and learning-by-doing (LBD), changes of factors that stimulate either one of these activities affect growth differently than in an economy where growth is determined by either R&D or LBD alone. In particular, when firms...

This paper investigates the R&D allocation and output decisions of a profit-maximising monopolist developing a science-based family of products or processes. A comparison of the numerical solution for a model with incremental product innovation, and that with incremental process innovation,...

The imperfect appropriability of revenues from innovation affects the incentives of firms to invest, and to disclose information about their innovative productivity. It creates a free-rider effect in the competition for the innovation that countervails the familiar business-stealing effect....

This paper studies the asset pricing implications of technology spillover, an important externality in innovation. While technology spillover enables firms to produce a variety of products that better satisfy their customers' love for variety, such benefits are procyclical, and investors...

We study a model of dynamic two-stage R&D competition where the competing firms are uncertain about the difficulty of the first stage. Staying in the competition is costly and a firm can also choose whether and when to quit. When a firm solves the first stage, it can choose whether and when to...

Understanding the long-term patterns of innovation in energy technologies is crucial to informing public policy planning in the context of climate change. This paper analyzes which of two common models of innovation over the technology life-cycle – the product-process innovation shift observed...