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ON THE BIMODALITY OF THE EXACT DISTRIBUTION OF THE TSLS ESTIMATOR

Published online by Cambridge University Press:  30 August 2006

G. Forchini
G. Forchini
Affiliation:
Monash University
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Abstract

We investigate the possible bimodality of the density of the two-stage least squares (TSLS) estimator in a just-identified/overidentified linear structural equation. By studying the interaction between weakness of instruments, degree of endogeneity, and degree of overidentification we are able to identify conditions for its existence.I thank Grant Hillier, Patrick Marsh, Don Poskitt, the editor Peter Phillips, and two anonymous referees for useful and encouraging comments.

Type
MISCELLANEA: BIMODALITY AND WEAK INSTRUMENTATION
Information
Econometric Theory , Volume 22 , Issue 5 , October 2006 , pp. 932 - 946
Copyright
© 2006 Cambridge University Press

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References

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