A fractional cointegration test of purchasing power parity: the case of selected members of OPEC
In recent years, analysts have used cointegration tests in determining whether the residuals of the purchasing power parity (PPP) model are mean-reverting. Cointegration methods, however, rest on the binary selection of the series as either stationary or integrated of degree one. This approach excludes a class of long-memory stochastic processes with a fractional differencing parameter which also have mean-reverting characteristics. Fractional cointegration method tests the mean-reverting property of a series which is based on this class of stochastic processes. This paper uses cointegration and fractional cointegration methods in determining the mean-reverting properties of the parallel market exchange rates for several members of the Organization of Petroleum Producing Countries. The Geweke and Porter-Hudak (GPH) test results suggest that the PPP models for Algeria, Ecuador, Saudi Arabia and Venezuela are fractionally cointegrated. Moreover, according to the Augmented Dickey-Fuller (ADF) test, the PPP models for all countries under study, appear not to have a cointegrating vector.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Volume (Year): 8 (1998)
Issue (Month): 6 ()
|Contact details of provider:|| Web page: http://www.tandfonline.com/RAFE20|
|Order Information:||Web: http://www.tandfonline.com/pricing/journal/RAFE20|
When requesting a correction, please mention this item's handle: RePEc:taf:apfiec:v:8:y:1998:i:6:p:559-566. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Michael McNulty)
If references are entirely missing, you can add them using this form.