Modified Hausman tests for inefficient estimators
Michael Creel ()
Applied Economics, 2004, vol. 36, issue 21, 2373-2376
Widely-used estimators such as the generalized method of moments (GMM) and quasi-maximum likelihood (QML) are not efficient in general. This study shows how the Hausman specification test may easily be corrected to be used with inefficient estimators. It introduces a related test that has better power, and it points out the relationship to the GMM criterion test of specification of overidentified models. A brief simulation illustrates the results.
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