This paper considers the IV estimation of spatial autoregressive models with endogenous regressors in the presence of many instruments. To improve asymptotic efficiency, it may be desirable to use many valid instruments. However, finite sample properties of IV estimators can be sensitive to the...

In this article, we propose a two-step method to identify and estimate endogenous and exogenous social interactions in the Manski (1993) and Brock and Durlauf's (2001a,b) discrete choice model with unobserved group variables. Taking advantage of social groups with large group sizes, we first...

Estimation of a cross-sectional spatial model containing both a spatial lag of the dependent variable and spatially autoregressive disturbances are considered. [Kelejian and Prucha (1998)]described a generalized two-stage least squares procedure for estimating such a spatial model. Their...