This paper proposes a speci.cation test of the mixed logit models, by generalizing Haus- man and McFadden.s (1984) test. We generalize the test even further by considering a model developed by Berry, Levinsohn and Pakes (1995).

In complicated/nonlinear parametric models, it is generally hard to know whether the model parameters are point identified. We provide computationally attractive procedures to construct confidence sets (CSs) for identified sets of full parameters and of subvectors in models defined through a...