Title

Second-order Refinement of Empirical Likelihood for Testing Overidentifying Restrictions

Document Type

Discussion Paper

Publication Date

4-1-2011

CFDP Number

1791

CFDP Revision Date

2012-01-01

CFDP Pages

32

Abstract

This paper studies second-order properties of the empirical likelihood overidentifying restriction test to check the validity of moment condition models. We show that the empirical likelihood test is Bartlett correctable and suggest second-order refinement methods for the test based on the empirical Bartlett correction and adjusted empirical likelihood. Our second-order analysis supplements the one in Chen and Cui (2007) who considered parameter hypothesis testing for overidentified models. In simulation studies we find that the empirical Bartlett correction and adjusted empirical likelihood assisted by bootstrapping provide reasonable improvements for the properties of the null rejection probabilities.

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