This paper introduces the time dimension into the precompetitive R&D model, where both demand and spillovers vary over time. The effect of cooperation on R&D depends on a weighted function of spillovers, with the weights being a function of demand levels. The bulk of the incentives for...

This paper studies the decision of firms to expense or capitalize R&D expenditures. The firm has an incentive to mismatch the benefits and costs of R&D, expensing a larger portion of R&D when the benefits occur in the long-run and capitalizing a larger portion when the benefits occur in the...