Transaction Costs and Nonlinear Modelling of Real Exchange Rate Deviations from Purchasing Power Parity: Evidence from the MENA Region

2014 ◽  
pp. 293-308
Author(s):  
Nejib Hachicha ◽  
Wajdi Frikha
Keyword(s):  
Exchange Rate ◽  
Transaction Costs ◽  
Real Exchange Rate ◽  
Purchasing Power Parity ◽  
Purchasing Power ◽  
Power Parity ◽  
Mena Region ◽  
Nonlinear Modelling

scholarly journals Testing the Harrod Balassa Sameulson Hypothesis: The Case of Pakistan.

2011 ◽  
Vol 50 (4II) ◽  
pp. 379-399 ◽  
Author(s):  
Sunila Jabeen ◽  
Waseem Shahid Malik ◽  
Azad Haider
Keyword(s):  
Exchange Rate ◽  
Real Exchange Rate ◽  
Open Economy ◽  
Purchasing Power Parity ◽  
Control Variable ◽  
Policy Implications ◽  
Purchasing Power ◽  
Power Parity ◽  
Long Run ◽  
Tradable Sector

For a small open economy of Pakistan, exchange rate is determined through the two alternative theories; the nominal theory of exchange rate named by Purchasing Power Parity (PPP) and the real theory known as Harrod Balassa Sameulson (HBS). According to the requirements of theories, two kinds of real exchange rate have been employed for the yearly data of 1972-2008. As, both of the theories are disputed at the ground of their long run relationship with real exchange rate, therefore, the VAR based Johenson Co-integration approach has been utilised to see the long run relationships. PPP has shown less satisfactory results either in its form of absolute version or relative version. Because, real exchange rate in Pakistan is a non-stationary process by Augmented Dickey Fuller unit-root test, predicting some pushing force behind the non-tradable sector. While favouring the PPP in tradable sector, the ADF and KPSS are indicating the presence of the HBS in Pakistan. On the other hand, the analysis of the HBS through co-integration is showing that relative productivity difference has an opposite relationship with relative non-tradable sector prices and with RER. However, the relationship between relative non-tradable sector prices and RER is much stronger and according to the theory. So, there have been incorporated some demand side and external factors to reduce the mis-specification of the simple HBS model. Therefore, in the extended HBS model, productivity difference, government consumption expenditure, terms of trade and world oil prices are appreciating the RER and money supply (a control variable) is pursuing depreciation in RER. So, these results yield some policy implications for Pakistan which can be useful for developing countries as well. JEL classification: E0, E31, E44 Keywords: Harrod-Balassa-Samuelson, Exchange Rate, Purchasing Power Parity, Pakistan

Purchasing Power Parity and Real Exchange Rates

2019 ◽  
Author(s):  
Menzie D. Chinn
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Real Exchange Rate ◽  
Purchasing Power Parity ◽  
Time Horizon ◽  
Nominal Exchange Rate ◽  
Purchasing Power ◽  
Power Parity ◽  
The Real ◽  
Short Run

The idea that prices and exchange rates adjust so as to equalize the common-currency price of identical bundles of goods—purchasing power parity (PPP)—is a topic of central importance in international finance. If PPP holds continuously, then nominal exchange rate changes do not influence trade flows. If PPP does not hold in the short run, but does in the long run, then monetary factors can affect the real exchange rate only temporarily. Substantial evidence has accumulated—with the advent of new statistical tests, alternative data sets, and longer spans of data—that purchasing power parity does not typically hold in the short run. One reason why PPP doesn’t hold in the short run might be due to sticky prices, in combination with other factors, such as trade barriers. The evidence is mixed for the longer run. Variations in the real exchange rate in the longer run can also be driven by shocks to demand, arising from changes in government spending, the terms of trade, as well as wealth and debt stocks. At time horizon of decades, trend movements in the real exchange rate—that is, systematically trending deviations in PPP—could be due to the presence of nontraded goods, combined with real factors such as differentials in productivity growth. The well-known positive association between the price level and income levels—also known as the “Penn Effect”—is consistent with this channel. Whether PPP holds then depends on the time period, the time horizon, and the currencies examined.

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