Misalignment

Economists writing on flexible exchange rates in the 1960s foresaw neither the magnitude nor the persistence of the changes in real exchange rates that have occurred in the last fifteen years. Unexpectedly large movements in relative prices have lead to sharp changes in exports and imports, disrupting normal trading relations and causing shifts in employment and output. Many of the largest changes are not equilibrium adjustments to real disturbances but represent instead sustained departures from long-run equilibrium levels, with real exchange rates remaining "misaligned" for years at a time. Contributors to Misalignment of Exchange Rates address a series of questions about misalignment. Several papers investigate the causes of misalignment and the extent to which observed movements in real exchange rates can be attributed to misalignment. These studies are conducted both empirically, through the experiences of the United States, Great Britain, Japan, and the countries of the European Monetary System, and theoretically, through models of imperfect competition. Attention is then turned to the effects of misalignment, especially on employment and production, and to detailed estimates of the effects of changes in exchange rates on several industries, including the U.S. auto industry. In response to the contention that there is significant "hysteresis" in the adjustment of employment and production to changes in exchange rates, contributors also attempt to determine whether the effects of misalignment can be reversed once exchange rates return to earlier levels. Finally, the issue of how to avoid—or at least control—misalignment through macroeconomic policy is confronted.

The concept of purchasing power parity (PPP) is used to evaluate whether eight East Asian currencies were overvalued on the eve of the 1997 crises. The Johansen and Horvath-Watson cointegration test procedures are applied to bilateral and multilateral exchange rates, deflated using CPIs, producer price indices (PPIs), and price indices of export goods. The second deflator yields the greatest evidence of “stationarity.” The study find’s that the Malaysian, Philippines, and Thai currencies were overvalued, while the Korean and Indonesian were substantially undervalued. Mixed results were obtained for the others. Measures of the equilibrium rate based on time trends in CPI-deflated rates typically suggest larger overvaluations.

Botswana's successive currency devaluations and recent move from a fixed to a crawling peg exchange rate regime raise the question of whether the exchange rate might be misaligned with economic fundamentals. This paper, applying the behavioral equilibrium exchange rate (BEER) approach, analyzes the behavior of the real exchange rate for the period 1985-2004. It finds that the pula was undervalued in the later 1980s but overvalued in recent years. Some policy lessons from experiences in other countries with crawling peg arrangements are therefore considered in the context of Botswana.

The impact of real exchange rate movements on GDP growth is a hotly debated issue both in policy and academic circles. In this paper, we provide evidence suggesting that the association between exchange rate misalignment and growth for a broad panel of countries is very weak. Controlling for country fixed effects, time effects and initial GDP, a more depreciated currency is associated with higher growth if one does not exclude outliers. However, this positive association always vanishes after controling for the savings rate. Importantly, this applies for both a large panel of countries and for the emerging economies subsample.

Recent findings in the growth literature suggest that developing countries need to keep a devalued exchange rate to stimulate their economic growth. Building on these findings, we econometrically evaluate to what ex-tent the real exchange rate of Pakistan has been aligned with its economic fundamentals, and find that the Pa-kistan rupee has been significantly and systematically overvalued during the last years. We then simulate the general equilibrium effects of an eventual re-alignment of the real exchange rate with economic fundamen-tals, and find not only an expected increase in the relative size of the tradable sector - where productivity in-creases tend to be faster – but also an associated improvement in the income of the poorest groups.

The study cautiously identifies exchange rate misalignment as an important element in most of the exchange rate crises that plagued the developing world during the last decade. Given that the increasing integration of world capital markets, has escalated the costs of such crises, a broad consensus emerged in recent years, that the overriding objective of exchange rate policy in developing countries, should be to avoid episodes of prolonged, and substantial misalignment, i.e., situations in which the actual real exchange rate differs significantly from its long-run equilibrium value. It was the Bank's involvement in one such misalignment episode, that eventually led to this book. Following an overview on the concepts and measurement of exchange rate misalignment, its impact on the purchasing power parity, and the relationship between the external real exchange rate (RER), and the two-good internal RER for tradables non-tradables, the study presents methodologies - empirical applications - for estimating the RER equilibrium. The study reaches an optimistic conclusion - that enough is known to identify cases of misalignment, and be able to sound clear warning signals. The implication for exchange rate policy is that ignorance about the empirical value of the equilibrium exchange rate, cannot be used to clinch arguments for extreme exchange arrangements, such as clean floats, currency boards, and "dollarization."