scholarly journals Long-Run and Short-Run Dynamics of the Exchange Rate in Pakistan: Evidence From Unrestricted Purchasing Power Parity Theory

2008 ◽  
Vol 13 (1) ◽  
Author(s):  
Muhammad Arshad Khan ◽  
Abdul Qayyum Abdul Qayyum
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Nominal Exchange Rate ◽  
Purchasing Power ◽  
Power Parity ◽  
Speed Of Adjustment ◽  
Long Run ◽  
Short Run ◽  
The Exchange Rate ◽  
Long Run Equilibrium

The main focus of this paper is to measure the speed of adjustment of the exchange rate by means of the persistent profile approach developed by Pesaran and Shin (1996) to examine the symmetry and proportionality assumptions of the purchasing power parity (PPP) theory of exchange rates for the Pak-rupee vis-à-vis the US-dollar exchange rate over the period 1982Q2-2005Q4. Using cointegration and vector error-correction modeling approaches, we find considerable support for the validity of weak-form PPP in Pakistan. Furthermore, the symmetry and proportionality assumptions of PPP are not verified. In the short-run, the exchange rate and foreign prices play a significant role in the convergence process to achieve long-run equilibrium. However, the speed of adjustment is very slow and the persistence profiles suggest that almost 4-5 years are required to eliminate deviations and bring the nominal exchange rate in line with the long-run equilibrium path.

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.

scholarly journals Nonlinear Cointegration and Asymmetric Adjustment in Purchasing Power Parity of the USA, Germany, and Pakistan

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Kashif Ali ◽  
Hafsa Hina ◽  
Muhammad Ijaz ◽  
Mahmoud El-Morshedy
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Purchasing Power ◽  
Power Parity ◽  
Asymmetric Adjustment ◽  
Long Run ◽  
Nominal Exchange Rates ◽  
Trading Partners ◽  
The Usa ◽  
The Exchange Rate

The current study explores nonlinear cointegration as well as asymmetric adjustment to investigate the long-run purchasing power parity in three major trading partners of Pakistan. The ESTAR and LSTAR models were used to investigate the behavior of the nominal exchange rates. The findings declared that series follows the nonlinear exchange rate. The asymmetric behavior of the exchange rate allows the threshold cointegration model to be implemented. In the case of Pakistan-China, the result suggests that long-run PPP holds. As a result, trading will be more profitable if the exchange rate is varied in relation to major trading partners rather than just the US dollar.

Study on the HMM of Nonlinear Nominal Exchange Rates

2011 ◽  
Vol 268-270 ◽  
pp. 1823-1827
Author(s):  
Shuo Zhang ◽  
Xiao Feng Hui
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Nominal Exchange Rate ◽  
Statistical Characteristics ◽  
Rate Theory ◽  
Purchasing Power ◽  
Rate Model ◽  
Power Parity ◽  
Nominal Exchange Rates ◽  
The Exchange Rate

The exchange rate model for the study of the exchange rate theory has very important significance. After analyzing the successful nonlinear model of real exchange rate based on the purchasing power parity (PPP) theory, the nonlinear problem of nominal exchange rate is studied in this paper. Through a research on a period of nominal exchange rate with nonlinear characteristics, a nonlinear statistical model of nominal exchange rate based on the hidden Markov model (HMM) is proposed, and the parameters of the model are estimated. Hypothesis testing shows that the model can accurately describe the statistical characteristics of the nominal exchange rate time series. The parameters showed that the nominal exchange rate model proposed in this paper, to some extent, supports that deviations from purchasing power parity (PPP) are nonlinear mean reversions.

scholarly journals Inflation and Exchange Rates: An International Examination of Relative Purchasing Power Parity

2021 ◽  
Vol 7 (3) ◽  
pp. p1
Author(s):  
Mehdi Monadjemi ◽  
John Lodewijks
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Purchasing Power ◽  
Impulse Response Functions ◽  
Power Parity ◽  
Long Run ◽  
Short Run ◽  
Relative Version ◽  
Relative Ppp ◽  
Exchange Rate Changes

Purchasing power parity (PPP) is an old and controversial proposition in economic literature. It is based on the law of one price, which argues that, after adjusting for the exchange rate, domestic and foreign price levels are equal. The relative version of PPP argues that exchange rate changes depend on the differential between domestic and foreign inflation rates. The absolute PPP version is based on restrictive assumptions that prevent it to hold in the short run. However, several studies support the validity of the relative PPP proposition in the long run. It is often observed that countries with persistently high inflation experience weak currencies. Our empirical testing using impulse response functions derived from a VAR model for eight countries provide mixed results. In six out of eight selected countries, relative PPP is supported by data in the long run.

On the Validity of Purchasing Power Parity: The Case of Sierra Leone

2020 ◽  
Vol 11 (1) ◽  
pp. 18 ◽  
Author(s):  
Mohamed JABBIE ◽  
Emerson Abraham JACKSON
Keyword(s):  
Exchange Rate ◽  
Error Correction ◽  
Sierra Leone ◽  
Purchasing Power Parity ◽  
The United States ◽  
Purchasing Power ◽  
Power Parity ◽  
Price Differential ◽  
Short Run ◽  
The Exchange Rate

This paper attempts to empirically validate the Purchasing Power Parity (PPP) theory in the context of Sierra Leone. To achieve this objective, cointegration and error correction techniques were utilized to account for both long and short-run dynamics over the period 2007Q1 to 2019Q1. The Engel-Granger cointegration technique was utilized to ascertain the long-run relationship between the exchange rate and the price differential between Sierra Leone and the United States of America, while the redundant variable test was used to attain the parsimonious short-run error correction model. The results indicated a cointegrating relationship, while the coefficient on the price differential was greater than one (1), reflecting that the PPP does not hold for Sierra Leone. Moreover, the short-run results showed a rejection of the theory and rather endorses the presence of depreciation inertia, where past depreciation of the exchange rate is a major determinant of its current depreciating trend.

An Empirical Study on the Long-Run Determinants of Exchange Rate

2008 ◽  
Vol 11 (03) ◽  
pp. 389-409 ◽  
Author(s):  
I-Ming Chiu
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Relative Price ◽  
Test Results ◽  
Power Parity ◽  
Foreign Reserves ◽  
Long Run ◽  
Short Run ◽  
The Exchange Rate ◽  
Productivity Differential

The behavior of exchange rates has been an important issue in the international finance literature. Although exchange rate is erratic and unpredictable in the short run, its long-run behavior is believed to be guided by economic fundamentals. This paper empirically tests the long-run determinants of the exchange rate by focusing on the Taiwan/US case. After incorporating productivity differential, foreign reserves, and monetary base in the absolute Purchasing Power Parity (PPP) proposition, where the relative price is the only determinant of the exchange rate, the Johansen's maximum likelihood test results indicate these determinants and the exchange rate are indeed cointegrated: thus a long-run relationship can be established.

scholarly journals Exchange Rate Appreciation, International Competitiveness And Purchasing Power Parity: The Shiomi Company Of Japan

2016 ◽  
Vol 12 (3) ◽  
pp. 135-144
Author(s):  
John F. Boschen
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Financial Management ◽  
Nominal Exchange Rate ◽  
Purchasing Power ◽  
Power Parity ◽  
Consumer Prices ◽  
The Us ◽  
Cost Competitiveness ◽  
International Financial Management

In 2011 the ongoing appreciation in the yen against the US$ led Japanese firm Shiomi to consider relocating its production facilities outside of Japan. As a prelude to making this decision, Shiomi commissioned an evaluation of the historical impact of the yen’s appreciation on Japanese competitiveness. This evaluation is the basis for two important lessons in international financial management.  First, it is the real exchange rate, rather than the nominal exchange rate, that determines the relative cost competitiveness of countries. Second, in accordance with the rules of purchasing power parity, the historical evaluation showed that higher inflation in the U.S. relative to Japan caused the ratio of Japanese to U.S. prices to fall at roughly the same rate as the yen’s appreciation against the US$. Thus the long-term appreciation in the yen had little impact on Japanese competitiveness. Students are asked to assess the relocation decision in light of the post-case data on exchange rates and consumer prices supplied in the case. The case is appropriate for use in an international financial management or international economics course.

Purchasing power parity as a long-term memory process

2015 ◽  
Vol 10 (4) ◽  
pp. 711-725 ◽  
Author(s):  
Mohamed Bilel Triki ◽  
Samir Maktouf
Keyword(s):  
Exchange Rate ◽  
Purchasing Power Parity ◽  
Empirical Literature ◽  
Long Term Memory ◽  
Purchasing Power ◽  
Power Parity ◽  
Fractional Cointegration ◽  
Content Type ◽  
Long Run ◽  
The Usa

Purpose – The purpose of this paper is to focus on whether the deviations from the cointegrating relationship possess long memory and the fractional cointegration analyses may capture a wider range of mean-reversion behaviour than standard cointegration analyses. Design/methodology/approach – This paper uses a fractional cointegration technique to test the purchasing power parity (PPP). Findings – The authors found that PPP held, but very weakly, in the long run between the Argentine, Brazil, Chile, Colombia, Indonesia, Korea, Mexico, Thailand and Venezuela and US exchange rate during our floating exchange rate period but that the deviations from it did not follow a stationary process. Nevertheless, it is also found that the deviations from PPP exists and can be characterized by a fractionally integrated process in nine out of 13 countries studied. Originality/value – The findings are consistent with the consensus of the empirical literature, reviewed earlier in this paper, on PPP between Argentine, Brazil, Chile, Colombia, Indonesia, Korea, Mexico, Thailand and Venezuela and the USA.

Sign in / Sign up

Export Citation Format

Share Document