Differentiated products are the central economic focus of competition in consumer goods products such as cereal, soda, and beer. We first estimate demand models which do not restrict unduly the pattern of consumer preferences as does much previous research in the area of differenciated products....

We demonstrate analytically that for the widely used simultaneous equation model with one jointly endogenous variable and valid instruments, 2SLS has smaller MSE error, up to second order, than OLS unless the R², or the F statistic of the reduced form equation is extremely low. We also consider...

This paper evaluates the effects of the 1986 Tax Reform Act on household labor supply and savings. It describes the tax bill's effects on incentives to work and to save, and uses recent econometric estimates of labor supply and savings elasticities to describe the reform's impact on household...

This paper considers mismeasurement of the dependent variable in a general linear index model, which includes qualitative choice models, proportional and additive hazard models, and censored models as special cases. The monotone rank estimator of Cavanagh and Sherman [1998] is shown to be...