The Maximum Number of Parameters for the Hausman Test When the Estimators are from Different Sets of Equations

Kazumitsu Nawata and Michael McAleer
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Kazumitsu Nawata: University of Tokyo, Japan

No 13-197/III, Tinbergen Institute Discussion Papers from Tinbergen Institute

Abstract: This discussion paper led to a publication in 'Economics Letters' (2014). Vol. 123(3), pages 291-294.

Hausman (1978) developed a widely-used model specification test that has passed the test of time. The test is based on two estimators, one being consistent under the null hypothesis but inconsistent under the alternative, and the other being consistent under both the null and alternative hypotheses. In this paper, we show that the asymptotic variance of the difference of the two estimators can be a singular matrix. Moreover, in calculating the Hausman test there is a maximum number of parameters which is the number of different equations that are used to obtain the two estimators. Three illustrative examples are used, namely an exogeneity test for the linear regression model, a test for the Box-Cox transformation, and a test for sample selection bias.

Keywords: Hausman test; specification test; number of parameters; instrumental variable (IV) model; Box-Cox model; Sample selection bias (search for similar items in EconPapers)
JEL-codes: C2 C5 I18 (search for similar items in EconPapers)
Date: 2013-12-12
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Related works:
Journal Article: The maximum number of parameters for the Hausman test when the estimators are from different sets of equations (2014)
Working Paper: The Maximum Number of Parameters for the Hausman Test When the Estimators are from Different Sets of Equations (2014)
Working Paper: The maximum Number of parameters for the Hausman Test When the Estimators are from Different Sets of Equations (2013)
Working Paper: The Maximum Number of Parameters for the Hausman Test When the Estimators are from Different Sets of Equations (2013)
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