The purpose of this paper is threefold. First, we give an overview of the general direction the spatial econometrics literature has taken without attempting to provide a representative survey of all interesting work that has appeared. Second, we identify a number of problems in spatial...

Using US firm level panel data we simultaneously assess the contributions to productivity of three potential sources of research and development spillovers: geographic, technological, and product market ("horizontal"). To do so, we construct new measures of geographic proximity based on the...

In this paper, I examine methods used to construct and estimate game-theoretic models of oligopolistic interactions, and I survey some of the empirical findings. Both static and dynamic games are covered. Static models provide useful summary statistics concerning the outcomes of oligopolistic...

The carrying capacity of our natural environment is an important unpriced input to production. A consensus is growing that users should pay for the environmental damage that they cause. Although most people can accept this policy in principle, many are concerned with magnitude and incidence of...