This paper studies federal auctions for wildcat leases on the Outer Continental Shelf from 1959 to 1970. These are leases where bidders privately acquire (at some cost) noisy, but equally informativeâ€¦ (More)

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 productâ€¦ (More)

We propose a new nonparametric test of affiliation, a strong form of positive dependence with independence as a special, knifeâ€“edge, case. The test is consistent against all departures from the nullâ€¦ (More)

We study a nonparametric triangular system with (potentially discrete) endogenous regressors and nonseparable errors. Like in other work in this area, the parameter of interest is the structuralâ€¦ (More)

In this paper I illustrate the use of general conditions, derived by Pinkse (1999), under which Moranâ€“flavoured tests for spatial correlation and spatial crossâ€“correlation have a limiting normalâ€¦ (More)

We show that the oneâ€“step (â€˜continuous updatingâ€™) GMM estimator is consistent and asymptotically normal under weak conditions that allow for generic spatial and time series dependence. We use the newâ€¦ (More)

This paper considers estimation of the function g in the model Yt = g(Xt) + Îµt when E(Îµt|Xt) 6= 0 with nonâ€“zero probability. We assume the existence of an â€˜instrumental variableâ€™ Zt that isâ€¦ (More)

One of the main practical problems of nonparametric regression estimation is the curse of dimensionality. The curse of dimensionality arises because nonparametric regression estimates are dependentâ€¦ (More)

We consider a model in which an outcome depends on two discrete treatment variables, where one treatment is given before the other. We formulate a threeâ€“equation triangular system with weakâ€¦ (More)

We propose a semiâ€“structural discreteâ€“choice model that can be used to estimate static or dynamic decision rules. It is particularly useful in strategic contexts when games involve a rich set ofâ€¦ (More)