Okun’s law – A meta analysis
This paper seeks to identify whether there is a representative empirical Okun’s Law coefficient (OLC) and to measure its size. We carry out a meta regression analysis on a sample of 269 estimates of the OLC to uncover reasons for differences in empirical results and to estimate the ‘true’ OLC. On statistical (and other) grounds, we find it appropriate to investigate two separate subsamples, using respectively (some measure of) unemployment or output as dependent variable. Our results can be summarized as follows. First, there is evidence of type II publication bias in both sub-samples, but a type I bias is present only among the papers using some measure of unemployment as the dependent variable. Second, after correction for publication bias, authentic and statistically significant OLC effects are present in both sub-samples. Third, bias-corrected estimated true OLCs are significantly lower (in absolute value) with models using some measure of unemployment as the dependent variable. Using a bivariate MRA approach, the estimated true effects are -0.25 for the unemployment sub-sample and -0.61 for the output-sub sample; with a multivariate MRA methodology, the estimated true effects are -0.40 and -1.02 for the unemployment and the output-sub samples respectively.
|Date of creation:||2013|
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2006_20, Deakin University, Faculty of Business and Law, School of Accounting, Economics and Finance.
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- Brian Silverstone & Richard Harris, 2001. "Testing for asymmetry in Okun's law: A cross-country comparison," Economics Bulletin, AccessEcon, vol. 5(2), pages 1-13.
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- Ho-Chuan (River) Huang & Ya-Kai Chang, 2005. "INVESTIGATING OKUN's LAW BY THE STRUCTURAL BREAK WITH THRESHOLD APPROACH: EVIDENCE FROM CANADA," Manchester School, University of Manchester, vol. 73(5), pages 599-611, 09.
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