Model selection tests for nonlinear dynamic models

Douglas Rivers and Quang Vuong
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Douglas Rivers: Department of Political Science, Stanford University
Quang Vuong: Department of Economics, University of Southern California

Econometrics Journal, 2002, vol. 5, issue 1, 1-39

Abstract: This paper generalizes Vuong (1989) asymptotically normal tests for model selection in several important directions. First, it allows for incompletely parametrized models such as econometric models defined by moment conditions. Second, it allows for a broad class of estimation methods that includes most estimators currently used in practice. Third, it considers model selection criteria other than the models" likelihoods such as the mean squared errors of prediction. Fourth, the proposed tests are applicable to possibly misspecified nonlinear dynamic models with weakly dependent heterogeneous data. Cases where the estimation methods optimize the model selection criteria are distinguished from cases where they do not. We also consider the estimation of the asymptotic variance of the difference between the competing models" selection criteria, which is necessary to our tests. Finally, we discuss conditions under which our tests are valid. It is seen that the competing models must be essentially nonnested. Copyright Royal Economic Society 2002

Date: 2002
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