Journal
INTERNATIONAL JOURNAL OF FORECASTING
Volume 24, Issue 3, Pages 414-431Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijforecast.2008.03.004
Keywords
business surveys; Granger causality; government forecasting; production expectations; spectral analysis
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Decomposing Granger causality over the spectrum allows us to disentangle potentially different Granger causality relationships over different frequencies. This may yield new and complementary insights compared to traditional versions of Granger causality. In this paper, we compare two existing approached in the frequency domain, proposed originally by Pierce [Pierce, D.A. (1979). R-squared measures for time series. Journal of the American Statisical Association. 74, 901-910] and Geweke [Geweke, J. (1982). Measurement of linear dependence and feedback between multiple time series. Journal of the American Statistical Association, 77, 304-324], and introduce a new testing procedure for the Pierce spectral Granger causality simulations. In addition, we apply the methodology in the context of the predictive value of the European production expectation surveys. This predictive content is found to vary widely with the frequency considered, illustrating the usefulness of not restricting oneself to a single overall test statistic. (C) 2008 International Institute of Forecasters. Published by Elsevier B.V. All rights reserved.
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