A group of studies have shown that in less developed countries, Purchasing Power Parity (PPP) theory is supported more often when black market exchange rates rather than official rates are used in the testing procedure. They have all relied upon linear Augmented Dickey-Fuller (ADF) test applied...

Several different approaches have been followed by researchers to test the validity of Purchasing Power Parity (PPP). Since the introduction of the unit-root tests, researchers have applied a battery of these tests to determine whether the real exchange rates are stationary. If the answer is in...

Devaluation or depreciation of a currency worsens the trade balance before improving it, resulting in a J-curve pattern. A new definition of the hypothesis implies a short-run deterioration combined with the long-run improvement. By using monthly data over the January 1990-June 2005 period from...

The cross-correlation function between terms of trade and trade balance has been found to resemble a pattern that is labelled the S-curve. Support for this pattern has been provided for developed and less developed countries by previous research. This paper investigates the S-curve for 10...

Since the publication of Taylor's (2002) results supporting Purchasing Power Parity (PPP) theory using a century of data, several authors have tried to verify PPP using the same data set. While one study has rejected Taylor''s strong conclusion, others have supported it. In this paper we use yet...

Since the publication of Taylor's (2002) results supporting Purchasing Power Parity (PPP) theory using a century of data, several authors have tried to verify PPP using the same data set. While one study has rejected Taylor''s strong conclusion, others have supported it. In this paper we use yet...