Download This PaperLong Cycles in Growth: Explorations Using New Frequency Domain Techniques with US Data
52 Pages Posted: 18 Mar 2010
Date Written: February 21, 2010
Abstract
In his celebrated 1966 Econometrica article, Granger first hypothesized that there is a ‘typical’ spectral shape for an economic variable. This ‘typical’ shape implies decreasing levels of energy as frequency increases, which in turn implies an extremely long cycle in economic fluctuations and particulary in growth. Spectral analysis is however based on certain assumptions particulary in that render these basic frequency domain techniques inappropriate for analysing non-stationary economic data. In this paper three recent frequency domain methods for extracting cycles from non-stationary data are used with US real GNP data to analyse fluctuations in economic growth. The findings, among others, are that these more recent frequency domain techniques do not provide evidence to support the ‘typical’ spectral shape and nor an extremely long growth cycle á la Granger.
Keywords: business cycles, growth cycles, frequency domain, spectral analysis, long cycles, Granger, wavelet analysis, Hilbert-Huang Transform (HHT), empirical mode decomposition (EMD), non-stationarity
JEL Classification: C13, C14, O47
Suggested Citation: Suggested Citation
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