Time-series model forecasts and structural breaks: evidence from Spanish pre-EMU interest rates

Analysis of the future behaviour of economic variables can be biased if structural breaks are not considered. When these structural breaks are present, the in-sample fit of a model gives us a poor guide to ex ante forecast performance. This problem is true for both univariate and multivariate analysis and can be extremely important when co-integration relationships are analysed. The main goal of this article is to analyse the impact of structural breaks on forecast accuracy evaluation. We focus on forecasting several interest rates from the Spanish interbank money market. In order to carry out the analysis, we perform two forecasting exercises: (a) without structural breaks and (b) when structural breaks are explicitly considered. We use new sequential methods in order to estimate change-points in an endogenous way. This method allows us to detect structural breaks in all four rates in May 1993. However, the effects of these breaks are not very strong, since we found scarce gains in forecasting accuracy when the structural breaks are included in the models.     

Real exchange rates and target interest rates in a simple VAR model

This paper proposes a simple vector autoregressions (VAR) model with (real) output and exchange rate shocks on interest rates. Rather than assuming non-recursive identification schemes, we test the identifying assumption of the error term decompositions. Applying the model to quarterly data on major currencies against the U.S. dollar (USD) from 1974 to 1997, interest rate shocks explain - after 3 years - 16% of Canadian dollar/USD (CAD) real exchange rate variations and less than 2% for the mark/USD and yen/USD. Positive innovations of interest rates bring about (transitory) CAD real appreciations in differences and (permanent) appreciations in levels. Canadian real output is more explained by domestic interest rate shocks (19%) than Germanys (5%) or Japans (0.2%). Canada is smaller than the other economies and CAD has been shown to suffer from fear of floating. Our findings support the proposition that domestic shocks dominate output variance under fixed exchange rates. They are also consistent with structural interpretations of the VAR.     

Real exchange rates and real interest rate differentials: A present value interpretation

Although the real exchange rate-real interest rate (RERI) relationship is central to most open economy macroeconomic models, empirical support for the relationship is generally found to be rather weak. In this paper we re-investigate the RERI relationship using bilateral US real exchange rate data spanning the period 1978-2007. Instead of testing one particular model, we build on Campbell and Shiller [1987. Cointegration tests of present-value models. Journal of Political Economy 95, 1062-1088] to propose a metric of the economic significance of the relationship. Our empirical results provide robust evidence that the RERI link is economically significant and that the real interest rate differential is a reasonable approximation of the expected rate of depreciation over longer horizons.     

Real wages,real interest rates,and the Phillips curve

This article argues that any analysis of a Phillips curve should include the real interest rate in addition to inflation and real wages as any changes in the interest rate changes the labour–capital input mix in the production process leading to a change in the level of employment in the economy. To justify this argument a Phillips curve model is developed, which includes the real interest rate in addition to inflation and real wages. After the diagnosis of the time series properties of the data, an error correction model is developed and estimated using a set of US annual data from 1948 to 1996. The estimated parameters of the model do suggest that one should really take into consideration of the real interest rate while analysing the Phillips curve. A non-nested test (F-test) also suggests that the Phillips curve model with real interest rate as an additional variable performs better than the conventional method that does not include the real interest rate.     

Smooth structural breaks and the stationarity of the yen real exchange rates

This article examines and solves an interesting paradox in the literature that the tests for purchasing power parity (PPP) based on the yen real exchange rates (RERs) refute the PPP hypothesis more often than those with other major currency-based RERs, and the evidence is sensitive to the sample period used. Using a new empirical methodology accounting for both nonlinearity and multiple smooth temporary breaks in the data, we show that the puzzling finding is due to the failure to take into account the long but temporary large rise and fall in the yen RERs. The results illustrate that the yen RERs in the post-Bretton Woods period are likely mean reverting with linear or nonlinear adjustment toward large, long swing type of infrequent smooth temporary changes around constant equilibrium values, supporting the validity of PPP and resolving the paradox.     

Real and nominal UK interest rates,ERM membership,and inflation targeting

This article estimates a two-factor term structure model to analyze the time-varying mean-reverting levels of the UK real and nominal short-term interest rates. Before and during British membership in the ERM, the mean-reverting levels of real and nominal short rates have a strong negative correlation. Afterward, when the UK implemented an inflation targeting policy, the mean-reverting levels have a strong positive correlation. The article also reports empirical evidence of a link between the time-varying central tendencies and inflation in the disinflation period before the implementation of the inflation targeting policy.     

Liquidity and interest rates

This paper analyzes a series of models in which money is required for asset transactions as well as for transactions in goods. In these models, government open-market operations induce liquidity effects that lead to interest rate behavior quite different from the behavior one would predict on the basis of Fisherian fundamentals. The paper characterizes these effects under various assumptions about the nature of securities traded and the behavior of shocks.     

Dynamics of regional unemployment rates in Brazil: Fractional behavior,structural breaks,and Markov switching

This paper investigates unemployment dynamics in Brazil and in its major metropolitan regions using a fractional integration model. Aspects regarding structural breaks and regime switches are discussed as well. To do that, the methods proposed by Hassler and Meller (2009) and Tsay and Härdle (2009) are used. The major results indicate that unemployment rates have two different levels of persistence. The first one is nonstationary whereas the second one is nonstationary but mean-reverting. Based on these findings, the convergence hypothesis of regional unemployment rates was tested. Following the fractional stochastic convergence criterion put forward by Mello and Guimaraes-Filho (2007), it was concluded that regional unemployment rates are convergent.     

Real interest rates,inflation and the open economy: A regime-switching perspective on Australia and New Zealand

We investigate the time-series properties of Australian and New Zealand real interest rates within a Markov-switching framework. This enables us to identify characteristics in real interest rate behavior hitherto unacknowledged. We find that rates switch between alternative stationary regimes characterized by differing means, speeds of mean-reversion and volatility. For New Zealand, high rates of inflation increase the probability of remaining in a regime characterized by a faster speed of adjustment. Further application of this methodology considers the real interest rate differential between Australia and New Zealand and points to differing regimes based on volatility rather than persistence.     

Keynes, uncertainty and interest rates

Uncertainty plays an important role in The General Theory, particularlyin the theory of interest rates. Keynes did not provide a theoryof uncertainty, but he did make some enlightening remarks aboutthe direction he thought such a theory should take. I arguethat some modern innovations in the theory of probability allowus to build a theory which captures these Keynesian insights.If this is the right theory, however, uncertainty cannot carryits weight in Keynes's arguments. This does not mean that theconclusions of these arguments are necessarily mistaken; intheir best formulation they may succeed with merely an appealto risk.     

Real exchange rates and competitiveness

This paper examines indicators of competitiveness. It analyses the conceptual foundations of conventional measures of the real exchange rate and finds that inferences about competitiveness from these indicators require strong, and in many cases implausible, assumptions. Based on this analysis some alternative measures are proposed and their use is illustrated using data from Europe. Given the usefulness of standardised indicators, four simple charts are proposed; these help solve some conundrums in the European data and provide the basis for a richer set of inferences about competitiveness.This paper has benefited from discussions with Bob Traa, from comments by Lars Svensson and many colleagues in the International Monetary Fund (IMF), and from the analysis inMarston (1986). The views expressed are those of the authors and should not be construed as representing the position of the IMF.     

Australian monetary growth and short-term nominal interest rates: an interest parity efficient markets approach

The relationship between monetary growth and nominal interest rates continues to attract considerable attention in the literature. Mishkin (1982) has found that, by explicitly imposing market efficiency in an interest rate model for the US, empirical analysis does not support the ‘Keynesian’ proposition that increases in monetary growth are associated with reductions in short-term rates. In this paper a similar theoretical structure is used but, unlike Mishkin, explicit account is taken of the fact that Australia's capital market is closely integrated with international money markets. Incorporating this into the interest rate model indicates there is some empirical support for the ‘Keynesian’ proposition in the Australian case. The analytical model also incorporates a measure of interest rate volatility to account for the risk premium present in the forward rate for 90 day bank bills.     

Monetary policy and long-term US interest rates

This paper assesses the effect of federal funds rate innovations on longer-term US nominal interest rates across different periods. The evidence suggests that these responses change with changes in the monetary policy regime. Time periods considered are pre- and post-1979 and different Federal Reserve Chairman’s tenure. The response of longer-term interest rates to federal funds rate innovations are shown to be smaller and less persistent in the post-1979 period when the Federal Reserve placed more emphasis on inflation.     

Budget deficits and interest rates in Germany

This study uses the basic tools of cointegration to determine whether there exists a long-term relationship between budget deficits and nominal interest rates in Germany. Maximum eigenvalue, trace, and likelihood ratio tests all affirm that there does apparently exist a long-term relationship between the budget deficit and the nominal interest rate. Accordingly, regression studies and formal causality tests have a reasonable basis for investigating whether budget deficits lead to higher interest rates in Germany.     

Effects of US interest rates and news on the daily interest rates of a highly indebted emerging economy: evidence from Turkey

It has been widely demonstrated that asset prices react sensitively to macroeconomic news releases both in the industrialized countries and emerging markets. However, there are contradicting results on the effects of changes in interest rates of industrialized countries on asset prices of emerging markets. In heavily indebted economies, in addition to these factors, political news and announcements from international institutions that may increase or decrease concerns about debt sustainability can affect asset prices as well. This potential notwithstanding, there has been relatively limited empirical work on the effects of such variables. The objective of this study is to quantify the impact of all of these factors on interest rates of a highly indebted emerging economy. Using daily post-crisis data of the Turkish economy we show that both good and bad political news, International Monetary Fund announcements, and European Union related news significantly affected secondary market government securities yields, whereas volatility of yields was affected mainly by bad news releases. Changes in US Treasury bond rates and ‘appetite’ for risk of foreign investors did not affect government securities yields in the period analysed.     

The PPP hypothesis and structural breaks: the case of Mexico

We test the purchasing power parity hypothesis for the Mexican peso/US dollar real exchange rate using monthly data for 1969–2010. Results suggest that the real exchange rate reverts to a changing mean. These mean shifts can be explained by liberalization policies implemented during the 1980s and 1990s that reduced trade barriers in the Mexican economy. Such policies modified the tradable/non-tradable goods composition of the price index producing mean shifts in the real exchange rate associated with PPP.     

Deficits and interest rates: : An analysis examining some neglected variables

This paper examines the impact of federal deficits on the nominal long-term rate of interest in the United States, using the IS-LM and loanable-funds models. Unlike the other studies, however, the paper expands these models to include variables to reflect wartime periods, bank regulation and deregulation, recession, and new exchange rate systems. It is found that the federal deficits have positive and significant impact on the long-term rate of interest during the period 1955–1985.     

Mean-reversion in international real interest rates

This paper examines the mean-reversion property of real interest rates. Many past studies have reported puzzling outcomes of the mean-aversion of real interest rates for a number of countries. In the article, we employ panel unit root tests and carry out half-life estimation based on the bias-corrected bootstrap. These findings of the paper provide strong evidence that, in both major Western and East Asian capital markets (including several emerging ones), real interest rates are mean-reverting. In addition, we find evidence that the degree of mean-reversion of the real interest rates is positively correlated with that of output growth, which is consistent with the implications of standard intertemporal behavior.