Predictions of short-term rates and the expectations hypothesis

This paper emphasizes that traditional tests of the EH are based on two assumptions: the expectations hypothesis (EH) per se and an assumption about the expectations generating process (EGP) for the short-term rate. Arguing that conventional tests of the EH need to assume EGPs that may be significantly at odds with the true EGP, we investigate this possibility by analyzing the out-of-sample predictive performances of several models for predicting interest rates, including a few models which assume that the EH holds in its functional form that relates long- to short-term yields. Using US riskless yield data for a 1970–2016 monthly sample and testing methods that take into account the parameter uncertainty, the null hypothesis of an equal predictive accuracy of each model relative to the random walk alternative is hardly ever rejected at intermediate and long horizons. This confirms that, at least at a practical level, the main difficulty with the EH is represented by the effective prediction of short-term rates. We discuss the relevance of these findings for central banks’ use of forward guidance.     

Optimal interest rate stabilization in a basic sticky-price model

This paper studies optimal monetary policy with the nominal interest rate as the single policy instrument. Firms set prices in a staggered way without indexation and real money balances contribute separately to households’ utility. The optimal deterministic steady state under commitment is the Friedman rule—even if the importance assigned to the utility of money is small relative to consumption and leisure. We approximate the model around the optimal steady state as the long-run policy target. Optimal monetary policy is characterized by stabilization of the nominal interest rate instead of inflation stabilization as the predominant principle.     

Forecasts of US short-term interest rates: A flexible forecast combination approach

This paper develops a flexible approach to combine forecasts of future spot rates with forecasts from time-series models or macroeconomic variables. We find empirical evidence that, accounting for both regimes in interest rate dynamics, and combining forecasts from different models, helps improve the out-of-sample forecasting performance for US short-term rates. Imposing restrictions from the expectations hypothesis on the forecasting model are found to help at long forecasting horizons.     

Testing the forward volatility unbiasedness hypothesis in exchange rates under long-range dependence

This paper analyses the unbiasedness hypothesis between spot and forward volatility, using both the actual and the continuous path of realised volatility, and focusing on long-memory properties. For this purpose, we use daily realised volatility with jumps for the USD/EUR exchange rate negotiated in the FX market and employ fractional integration and cointegration techniques. Both series have long-range dependence, and so does the error correction term of their long-run relationship. Hence, deviations from equilibrium are highly persistent, and the effects of shocks affecting the long-run relationship dissipate very slowly. While for long-term contracts, there is some empirical evidence that the forward volatility unbiasedness hypothesis does not hold – and, thus, that forward implied volatility is a systematically downward-biased predictor of future spot volatility – for short-term contracts, the evidence is mixed.     

Testing a discrete switching disequilibrium model of the UK labour market

This paper develops a test procedure for serial correlation for discrete switching disequilibrium models which include both an endogenous price adjustment equation and lagged dependent variables. The tests are applied to a model of the UK labour market and the model is respecified in the light of the test results.     

Forecasting the US term structure of interest rates using a macroeconomic smooth dynamic factor model

We extend the class of dynamic factor yield curve models in order to include macroeconomic factors. Our work benefits from recent developments in the dynamic factor literature related to the extraction of the common factors from a large panel of macroeconomic series and the estimation of the parameters in the model. We include these factors in a dynamic factor model for the yield curve, in which we model the salient structure of the yield curve by imposing smoothness restrictions on the yield factor loadings via cubic spline functions. We carry out a likelihood-based analysis in which we jointly consider a factor model for the yield curve, a factor model for the macroeconomic series, and their dynamic interactions with the latent dynamic factors. We illustrate the methodology by forecasting the U.S. term structure of interest rates. For this empirical study, we use a monthly time series panel of unsmoothed Fama–Bliss zero yields for treasuries of different maturities between 1970 and 2009, which we combine with a macro panel of 110 series over the same sample period. We show that the relationship between the macroeconomic factors and the yield curve data has an intuitive interpretation, and that there is interdependence between the yield and macroeconomic factors. Finally, we perform an extensive out-of-sample forecasting study. Our main conclusion is that macroeconomic variables can lead to more accurate yield curve forecasts.     

Default rates in the loan market for SMEs: Evidence from Slovakia

Financial markets in emerging economies are often perceived as more risky than those in developed countries. We investigate whether this is true for loans to SMEs using a unique unbalanced panel of nearly 700 loans made to SMEs in Slovakia between 2000 and 2005. Several probit and panel probit models show that liquidity and profitability factors are important determinants of SME defaults. Moreover, we find that indebtedness significantly increases the probability of default. Liability as proxied by the legal form of SMEs has important incentive effects. Finally, there exist significant differences between sectors. We show that default rates and factors converged to values found in developed financial markets.     

An empirical test of the Balassa-Samuelson hypothesis: Evidence from eight middle-income countries in Africa

The paper tests the validity of the Balassa-Samuelson hypothesis (BSH) using the within-effects and the dynamic panel generalised methods of moment (GMM) techniques for a panel of eight middle-income African countries over the period 1960–2009. We selected these countries because they exhibited a mixture of relative productivity growth and real exchange rate misalignment that fits the characterization of the BSH well. The results strongly support the BSH for this group of countries. The results are valid even after we controlled for potentially omitted variables and endogeneity. The implication is that as these countries become more productive, their currencies appreciate in real terms.     

Can the random walk model be beaten in out-of-sample density forecasts? Evidence from intraday foreign exchange rates

It has been documented that random walk outperforms most economic structural and time series models in out-of-sample forecasts of the conditional mean dynamics of exchange rates. In this paper, we study whether random walk has similar dominance in out-of-sample forecasts of the conditional probability density of exchange rates given that the probability density forecasts are often needed in many applications in economics and finance. We first develop a nonparametric portmanteau test for optimal density forecasts of univariate time series models in an out-of-sample setting and provide simulation evidence on its finite sample performance. Then we conduct a comprehensive empirical analysis on the out-of-sample performances of a wide variety of nonlinear time series models in forecasting the intraday probability densities of two major exchange rates—Euro/Dollar and Yen/Dollar. It is found that some sophisticated time series models that capture time-varying higher order conditional moments, such as Markov regime-switching models, have better density forecasts for exchange rates than random walk or modified random walk with GARCH and Student-t innovations. This finding dramatically differs from that on mean forecasts and suggests that sophisticated time series models could be useful in out-of-sample applications involving the probability density.     

Budget deficits and real interest rates: a regime-switching reflection on Ricardian Equivalence

This paper investigates the relevance of the Ricardian Equivalence theorem for the relationship between the budget deficit and real interest rate. In contrast to the existing literature, we focus on regime-change over a long study period and consider nonlinearities. Using a Markov regime-switching model applied to two centuries of annual data, we find evidence that the US economy switches between a Ricardian Equivalence regime, characterized by an insignificant relationship between the adjusted primary budget deficit and real long-term interest rate, and a regime characterized by the traditional view of a positive relationship. We also find evidence that the transition probabilities between regimes are time-varying insofar as a weaker level of economic activity, a lower real interest rate differential between the US and abroad, or higher national debts, is associated with a weaker relationship between budget deficits and interest rates.     

The role of interest rates during the transition to a market economy

We construct a simple two period model of an economy in transition from being centrally planned to being market oriented. Using this model, we draw certain positive conclusions about economic policies that reduce distortions during the transition period. In particular, we focus on the role of interest rates, a market parameter that has previously been almost entirely ignored in planned economies. Using stylized data derived from Czechoslovakia, we show that increase in nominal interest rates can actually be welfare-improving by partially compensating for the distortions induced by the transition process.The model is sufficiently general to be applied to a number of transition economies, and we use the cases of Czechoslovakia, the USSR, and China as examples of some of the phenomena that we are trying to explain. We show that the model generates a constrained, suboptimal equilibrium. In particular, we see that raising interest rates during the transition period reduces repressed savings, brought about by shortages in the controlled market. An improvement in consumer utility can therefore be brought about.A large part of the work in this paper was carried out while I was a Visiting Scholar in the Research Department of the International Monetary Fund. I would like to thank Mario Blejer, Nadeem Ul-Haque, and Sweder Van Wijnbergen for helpful comments. The views expressed here do not necessarily represent the opinions of the International Monetary Fund.     

Nonlinear mean reversion in the term structure of interest rates

The expectations hypothesis implies that the yield curve provides information on the future change in the short-term interest rate. However, transaction costs exist in the financial market, which prevent investors from realizing the arbitrage opportunity, when the arbitrage does not fully cover the transaction costs. The purpose of this paper is to assess the effect of transaction costs on the predictability of the term structure by using the threshold vector error correction model, which allows for the nonlinear adjustment to the long-run equilibrium relationship. A significant amount of threshold effect is found, and the adjustment coefficients are regime-dependent. The empirical result supports the nonlinear mean reversion in the term structure of interest rates.     

Trade Union Decline and the Distribution of Wages in the UK: Evidence from Kernel Density Estimation

This paper assesses the impact of changes in union density on the male structure in the UK over the 1980s. Using four separate data sets, we estimate the kernel density of hourly wages for men. Counterfactual densities are then generated to predict how the distribution of wages has changed over time because of the decline in union membership. We find that approximately 20 percent of the increase in the variance of log wages over the period can be attributed to changes in unionisation. The effect is particularly strong in the latter part of the period. We also present disaggregated estimates of the impact of declining unionisation. Our results are robuts across all the data sets we examine and similar results are obtained if union coverage is used rather than union membership.     

Asian Economic Problems and Prospects for Foreign Direct Investment: Local Evidence from the UK

This paper explores the implications of the Asian crises and economic problems in the Japanese economy on a UK region with a high dependence on employment in Asian manufacturing transplants. The paper examines the development of the Asian transplant sector in the case region (Wales), and maps out the economic significance of the sector on the local economy. Following a review of the potential impacts of economic problems in Asia on the local transplant sector, the paper uses local case evidence to explore recent changes in the Asian manufacturing base in Wales. Recent reversals in the transplant sector have largely been caused more by local manufacturing conditions. The paper concludes with a discussion of factors that are most likely to affect the trajectory of the Asian transplant sector in the case region in the new millennium.     

A quantitative reassessment of the purchasing power parity hypothesis: Evidence from Norway and the United Kingdom

Annual data from Norway and the United Kingdom from 1874 to 1971 are used to reassess the empirical performance of the purchasing power parity (PPP) doctrine. The simple version of the PPP relationship is supported by the data only if different short-run dynamics during a floating-rate period 1914–1928 is allowed for. Two sets of factors were found to be important in amending the simple PPP model. These were short-run cyclical variables affecting the adjustment towards the PPP equilibrium relationship and long-run structural factors such as productivity and terms of trade. Within this expanded model the proportionality between the exchange rate and relative price levels could not be rejected.     

Market Orientation and Performance: Objective and Subjective Empirical Evidence from UK Companies

The link between market orientation and performance has been claimed largely on the basis of the analysis of subjective measures of performance. Consequently, the aim of this study is to examine the links between market orientation and objectively measured financial performance. The paper begins with a brief examination of the definition and components of market orientation. Thereafter, extant research into the consequences of developing market orientation is reviewed critically, leading to the development of a number of research hypotheses. After detailing the research design and methodology adopted in this study, the findings of a survey of UK industry are presented. Briefly, the results indicate that when subjective measures of performance are adopted, market orientation is associated with company performance in certain environmental conditions. However, when objective measures of performance are adopted, we see a narrower range of environmental conditions where market orientation is positively associated with performance. The paper concludes with a series of implications for both theorists and practitioners.     

The random walk hypothesis for Chinese stock markets: Evidence from variance ratio tests

This study examines the random walk hypothesis for the Shanghai and Shenzhen stock markets for both A and B shares, using daily data over the period 1992–2007. The hypothesis is tested with new multiple variance ratio tests – Whang-Kim subsampling and Kim's wild bootstrap tests – as well as the conventional multiple Chow-Denning test. We find that Class B shares for Chinese stock exchanges do not follow the random walk hypothesis, and therefore are significantly inefficient. The Class A shares seem more efficient.     

我国总产出的动态特征研究--基于最小拉格朗日乘数单位根检验的实证分析

本文采用最新的结构断点最小拉格朗日乘数单位根检验,对我国1952～2004年间总产出的动态特征进行了研究,结果发现所有总量都是围绕着一个或两个结构断点的分段趋势平稳的。总产出服从分段趋势平稳过程的结论,对宏观经济运行预测、政策主导下的长期经济发展战略和短期经济稳定措施是否有效,以及总产出与其他总量间因果关系的研究具有重要启示。     

Term structure of interest rates in the Singapore Asian dollar market

This paper investigates empirically the term structure of interest rates in the Singapore Asian Dollar Market. We consider extended versions of the ARCH-M model of Engle, Lilien, and Robins (1987). The extended models permit autocorrelation, skewness and leptokurtosis in the residuals. The robustness of the empirical tests with respect to alternative specifications of the ARCH process is examined. It turns out that there is significant time-varying term premium, and this conclusion is independent of the hypothesized ARCH model.