Modelling the spot prices of various coffee types

We investigate long-run relationships among the spot prices of four coffee types. Two cointegrating vectors emerge: one between the prices of Arabica coffee varieties, and the other one between Unwashed Arabicas and Robusta. A persistence profile analysis shows a more rapid adjustment to equilibrium for the first compared to the second vector due to the fact that the former involves the Arabica coffees, which are more homogeneous. Adjustment is relatively fast, implying that economic forces act rapidly and discrepancies in the equilibrium relationships are short-lived. We also find evidence of non-linear adjustment back to equilibrium; when prices are too high, adjustment takes place at a slower rate than when they are too low.     

Long-run relations between private and public sector wages in Sweden

Using a maximum likelihood cointegration approach we find two long-run relationships between central government, local government, and private sector wages in Sweden. This means that there is one common trend for the three sectoral wages. Private sector wages are weakly exogenous for the estimation of the long-run relationships. This suggests that the private sector is the wage leader. Testing linear restrictions on the estimated cointegrating space, we reject stationarity for the three relative wages using likelihood ratio-tests. The hypotheses of homogeneity for the two cointegrating vectors, i.e., that wages do not diverge in the long run, is also rejected.     

FDIC Coverage on bank failures: Cointegration analysis using annual data, 1942–91

The present study empirically investigates whether in the U.S. federal government-provided deposit insurance, which was intended to prevent runs on banks and to protect depositors of modest means, has acted to induce increased bank failures. This issue has been investigated earlier, but only with regression analysis, and it remains unresolved since results vary sharply from one study to the next. By contrast, the present study uses cointegration techniques to investigate this problem. The cointegration analysis finds strong evidence of a cointegrating relationship between the bank failure rate and the extent of central government-provided deposit insurance, as well as other variables. Maximum eigenvalue and trace test results, along with normalized cointegrating vectors and likelihood ratio test results, are provided for examination.     

Long–run price and income elasticities of demand for Hong Kong exports: a structural cointegrating VAR approach

This article revisits a system of export volume and price equations to estimate the long–run price and income effects in the demand for Hong Kong's exports. Using a recently developed restricted cointegrating VAR approach it tests theorybased restrictions and obtains estimates of the long–run structural coefficients. The estimation results provide supporting evidence for the theory–based restrictions and suggest that the demand for Hong Kong's exports is both price and income elastic. This article is therefore able to present a long–run model of Hong Kong's exports that is both theory and data consistent, and long–run elasticities that are economically interpretable. The short–run properties of the model are illustrated by means of persistence profiles, which confirm the cointegrating vectors tendency of convergence.     

Are international value premiums driven by the same set of fundamentals?

This paper investigates the long-run behaviour of international value premium price indices for G7 countries using data from January 1975 to December 2002. We use Johansen [Johansen, S., 1991. Estimation and hypothesis testing of cointegration vectors in Gaussian vector autoregressive models. Econometrica 59, 1551–1580; Johansen, S., 1995. Likelihood-based Inference in Cointegrated Vector Autoregressive Models, Oxford University Press] cointegration methodology and find one cointegrating vector for the period of December 1987 to December 2002. The results are robust to local currencies and a common currency. The cointegrating vector may reflect expectations about future economic activity since investors can adjust demand for either value or growth stocks depending on expected economic growth. Our results show that the cointegrating relationship can predict both future changes in the growth of logged industrial production and future stock market returns.     

Manufactured Exports,Capital Good Imports,and Economic Growth: Experience of Mexico and Brazil

This paper examines the export-led growth hypothesis using data from two Latin American countries, Mexico and Brazil, in a production function framework. It addresses some of the limitations of existing methods of testing the hypothesis. Contrary to popular belief, we do not find any evidence to support the hypothesis. Imported capital goods appear to be very significant in the growth process of these two countries. To check the robustness of the results, this study uses two different cointegrating procedures to determine the number of cointegrating vectors, and three different methods to estimate the parameters of the long-run relations. The results are robust across estimation techniques. [F43, F14, O47, O54]     

A vector error correction model of the Singapore stock market

This article examines the long-term equilibrium relationships between the Singapore stock index and selected macroeconomic variables, as well as among stock indices of Singapore, Japan, and the United States. Upon testing appropriate vector error-correction models, we detected that changes in two measures of real economic activities, industrial production and trade, are not integrated of the same order as changes in Singapore's stock market levels. However, changes in Singapore's stock market levels do form a cointegrating relationship with changes in price levels, money supply, short- and long-term interest rates, and exchange rates. While changes in interest and exchange rates contribute significantly to the cointegrating relationship, those in price levels and money supply do not. This suggests that the Singapore stock market is interest and exchanges rate sensitive. Additionally, the article concludes that the Singapore stock market is significantly and positively cointegrated with stock markets of Japan and the United States.     

Dynamic forecasting of monetary exchange rate models: Evidence from cointegration

The Frenkel-Bilson and Dornbusch-Frankel monetary exchange rate models are used to estimate the out-of-sample forecasting performance for the U.S. dollar/Canadian dollar exchange rate. By using Johansen's multivariate cointegration, up to three cointegrating vectors were found between the exchange rate and macroeconomic fundamentals. This means that there is a long-run relationship between the exchange rate and economic fundamentals. Based on error correction models, two monetary models outperform the random walk model at the three-, six-, and 12-month forecasting horizons. Therefore, monetary exchange rate models are still useful in forecasting exchange rates.     

Dynamic Seemingly Unrelated Cointegrating Regressions

We propose the parametric Dynamic Seemingly Unrelated Regression (DSUR) estimator for simultaneous estimation of multiple cointegrating regressions. DSUR is efficient when the equilibrium errors are correlated across equations and is applicable for panel cointegration estimation in environments where the cross section is small relative to the available time series. We study the asymptotic and small sample properties of the DSUR estimator for both heterogeneous and homogeneous cointegrating vectors. We then apply the method to analyse two long-standing problems in international economics. Our first application revisits the estimation of long-run correlations between national investment and national saving. Our second application revisits the question of whether the forward exchange rate is an unbiased predictor of the future spot rate.     

产业结构调整与经济增长关系协整分析—以广东省为例

运用协整理论和误差修正模型,对改革开放30年的广东省经济增长与产业结构之间的互动关系进行实证分析,研究结果表明：产业结构与经济增长之间呈现长期稳定的协同互动关系。经济增长促进了产业结构调整,而第二三产业的发展也极大地促进了经济增长。从长期趋势来看,产业结构调整具有明显的增长效应,加速产业结构调整、促进经济增长在理论上和实践中具体可行性。     

Bias correcting adjustment coefficients in a cointegrated VAR with known cointegrating vectors

The maximum likelihood estimator of the adjustment coefficient in a cointegrated vector autoregressive model (CVAR) is generally biased. For the case where the cointegrating vector is known in a first-order CVAR with no intercept, we derive a condition for the unbiasedness of the maximum likelihood estimator of the adjustment coefficients, and provide a simple characterization of the bias in case this condition is violated. A feasible bias correction method is shown to virtually eliminate the bias over a large part of the parameter space.     

Testing fiscal sustainability in Poland: a Bayesian analysis of cointegration

Fiscal sustainability is a central topic for most of the transition economies of Eastern Europe. This paper focuses on a particular country: Poland. The main purpose is to investigate, empirically, whether the post-transition fiscal policy is consistent with the intertemporal budget constraint, used as a formal theoretical framework. To test debt stabilization, the empirical analysis is made in two steps: first, we use a Bayesian methodology to conduct inference about the cointegrating relationship between budget revenues and (inclusive of interest) expenditures and to select the cointegrating rank. Second, we apply Bayesian inference to the estimation of the cointegrating vector and of the adjustment parameters. With a single cointegrating relation, we make use of some known results concerning the posterior density of the cointegrating vector, which belongs to the poly-t densities class. In this way, we experiment the usefulness of Bayesian inference in precisely assessing the magnitude of the cointegrating vector. Moreover, we show to what extent the likelihood of the data is important in revising the available prior information, relying on numerical integration techniques.     

中国长期煤炭需求:影响与政策选择

本文采用协整技术研究中国煤炭需求的长期均衡关系,估计出中国煤炭需求的长期收入弹性、价格弹性、结构弹性以及运输成本弹性;预测未来长期煤炭需求并分析其对环境、煤炭供给和煤炭价格的影响;模拟解释变量不同增长率下煤炭需求的演变并给出政策选择。中国高速经济增长是煤炭需求增长的主要原因。GDP是引导煤炭需求的原因,但煤炭需求不是引导GDP增长的原因,这也说明了将GDP作为解释变量的合理性。变量模拟得出的政策选择是工业结构的调整,即便是微调,也会对煤炭需求有很大的抑制作用;煤炭出厂价格的变动对煤炭需求变动的影响不太大,但煤炭需求对运输成本相当敏感,因而煤炭的最终价格对煤炭需求影响很大。     

A vector error-correction forecasting model of the US economy

Any research or policy analysis in economics must be consistent with the time-series properties of observed macroeconomic data. Numerous previous studies reinforce the need to specify correctly a model’s multivariate stochastic structure. This paper discusses in detail the specification of a vector error correction forecasting model that is anchored by long-run equilibrium relationships suggested by economic theory. The model includes six variables––the CPI, the GDP price index, real money balances (M1), the federal funds rate, the yield on long-term (10-year) government bonds, and real GDP––and four cointegrating vectors. The accuracy of VECM model forecasts for individual, univariate time series during for the 1990s is comparable to forecasts made by government agencies and private forecasters, perhaps because many forecasters share a similar implicit, long-run steady-state growth model of the economy. Judged by multivariate statistics that account for forecast-error covariance, VECM forecasts are found to be somewhat more accurate than a naïve random-walk alternative.     

Investigating the US consumer credit determinants using linear and non-linear cointegration techniques

This paper has investigated the determinants of total consumer credit for the USA over the period 1968:Q1 to 2011:Q3. Using Breitung's (2001) non-parametric rank tests, we find the existence of linear cointegrating relationships in the consumer credit models. Enders and Siklos' (2001) threshold adjustment tests revealed that non-linearity is present slightly (with a statistical significance of 10% level) in the consumer credit model with a short-term interest rate (federal funds rate), while there exists a linear and symmetric cointegrating relationship in the models with medium (3 years) and long (10 years) term interest rates. Application of the linear cointegrating techniques (fully modified OLS, canonical cointegrating regression and general to specific) show that consumer credit responds more significantly to the medium and long-term interest rates than the short-term interest rate. We use these results to assess the popular belief that abnormality in the consumer credit set the stage for the 2007–08 crisis and severe recession.     

A Cointegrating approach to budget deficits and long-term interest rates

A cointegrating approach is undertaken in this study to determine if there is a long-run equilibrium relationship between budget deficits and long-term interest rates for the United States and nine European countries. The cointegration approach consists of conducting cointegration tests and then testing several hypothesized values for the deficit and price expectations variables. The cointegration results suggest the existence of several significant cointegrating vectors for each of the ten countries, which would seem to appeal to the view of budget deficits having a positive impact on long-term interest rates. The hypothesized values for the deficit and price expectations variables are found to be too strict since the hypotheses are rejected in every case but one.     

(When) Should cointegrating regressions be detrended? The case of a German money demand function

If an economic relationship is superimposed by a linear time trend, the regression without detrending is misspecified. The estimators of such a regression do not converge to the true parameter values. First, the asymptotic limit arising from such misspecified regressions is characterized. Second, we observe with data before 1975 a significant time trend but no cointegrating relation between real money (M1), income and a long-term interest rate. The price level as a significant omitted variable is considered as an economic explanation for this feature. We find a price elasiticity larger than one. Third, with data after the breakdown of Bretton Woods (and the beginning of monetary targeting by the Bundesbank), real money, income and the interest rate alone are cointegrated. The long-run estimates seem to be fairly stable with data after the German union provided a step dummy accounts for a break in the mean. First version received: November 1996/final version received: June 1998     

A money demand system for euro area M3

In order to assess the importance of monetary and financial developments for key macroeconomic variables in the euro area a money demand system for M3 is estimated adopting a structural cointegrating VAR approach. While maintaining a good statistical representation of the data, long-run relationships are based on economic theory. By using generalized response profiles the dynamics of the money demand system is investigated without any further identifying assumptions. Error bounds of the profiles are derived using bootstrap simulations.     

Interest rate volatility,asymmetric interest rate pass through and the monetary transmission mechanism in the Caribbean compared to US and Asia

We analyse asymmetric interest rate pass through, the impact of interest rate volatility on interest rates and the monetary transmission mechanism in the countries of the CSME² using the Asymmetric TAR and MTAR cointegration models by Enders and Siklos (2001) and the EC-EGARCH(1, 1)-M model by Wang and Lee (2009), who examined the same issue for the US and nine Asian countries. The CSME is a unique case of study given that it contains within it a monetary union: the OECS². First, our results show that there is complete pass through in the retail lending rate for Trinidad and Tobago and for St. Lucia and therefore, by extension, in all the countries of the OECS³ but not the other countries of the CSME. In contrast, Wang and Lee (2009) found complete pass through for the US deposit rate but not in the rates of the other nine Asian countries. Second, in Wang and Lee (2009) the results of the TAR and MTAR models show asymmetric cointegrating relationships in the lending rate of three Asian countries and the deposit rate of five Asian countries. Comparatively, our results show asymmetric cointegrating relationship in the lending and deposit rate of only three countries out of six: Jamaica, Guyana and St. Lucia. Third, the results from the conditional mean equation in the EC-EGARCH(1, 1)-M model in Wang and Lee (2009) show that for the countries with asymmetric cointegrating relationships, the lending rate displays downward adjustment rigidity and the deposit rate displays upward adjustment rigidity. In contrast, our results show that both rates for Jamaica display upward adjustment rigidity and both rates for Guyana and St. Lucia display downward adjustment rigidity. Finally, similarly to Wang and Lee (2009), our results from the EC-EGARCH(1, 1)-M models show that the effect of interest rate volatility on interest rates varies among countries. Three out of the Asian countries from Wang and Lee (2009) support the collusive pricing arrangement hypothesis while in our case it happens only in two countries out of six from the CSME: Guyana and St. Lucia. Moreover, the leverage effect exists in the lending rate for two out six countries in the CSME as it happens in Wang and Lee (2009) in two out of their Asian countries. Along the same lines, the leverage effect exists in the deposit rate of three countries in the CSME, contrary to Wang and Lee (2009), who do not find any evidence at all. This shows evidence of an important heterogeneity in the behaviour of the CSME countries and that Trinidad and Tobago and St. Lucia (showing the effect of belonging to a monetary union) are our only analysed countries where, as in the US, there is complete pass through and the central bank can transfer all the cost associated with an increase in its policy rate to the retail rates.     

BORK'S PARADOX: STATIC VS. DYNAMIC EFFICIENCY IN ANTITRUST ANALYSIS

Judge Robert Bork holds two opposing attitudes towards perfect competition. It is a highly useful economic model for illustrating allocative efficiency, but it is a defective policy model because it deliberately omits productive efficiency. He reconciles these attitudes by combining perfectly competitive allocative efficiency with dynamically competitive productive efficiency in his analysis.
However, these two kinds of competition do not readily mix. One is a static equilibrium concept, the other a dynamic disequilibrium concept. One assumes perfect knowledge and the absence of change; the other assumes imperfect knowledge, learning, and continual flux. Each kind of competition is built on assumptions which, if true, would preclude the existence of the other.
Bork's policy conclusions require the simultaneous existence of both kinds of competition. If he drops dynamic competition from the analysis, a much more stringent antitrust policy is called for. If he drops static competition, economic theory does not justify even his strictures against mergers and cartels.