Nonlinearity and stationarity of inflation rates: evidence from the euro-zone countries

Earlier studies hardly reject the hypothesis of a unit root in inflation. Few studies have examined the possibility of nonlinearity in inflation and tested nonlinear stationarity of the inflation rates. This study thus intends to fill the gap. This study utilizes the tests for nonlinearity along with the unit root tests that allow for nonlinearity in the variables to examine the stationarity of inflation rates of 12 European countries that formed the Euro Zone (EZ) later in the sample period. The results suggest that the majority of these countries’ inflation rates can be characterized by mean reversion during the floating exchange rate period. Many of them appear to be nonlinear stationary. This finding is essential in conducting applied economic studies for these countries, when constructing models whose validity relies on whether or not inflation is stationary. The results of this study also imply that shocks to inflation have a transitory effect on inflation in the euro area. Therefore, it would be less costly in exercising the policies of disinflation for the monetary authorities of the euro area than for those of the countries with nonstationary inflation.     

Overborrowing and Balance of Payments Imbalances in a Monetary Union

The sources of the balance of payments imbalances in the Euro area can be characterized by a combination of four phenomena: (i) the credit imbalances between the core and the periphery of the Economic and Monetary Union (EMU) (ii) the credit misallocation between the tradable and the nontradable sectors in the periphery (iii) the rapid increase in the output and the price of nontradable goods in the periphery since the beginning of the EMU and (iv) the current account imbalances within the EMU. This paper explains all four of these stylized facts within a single model as a result of the interaction between the common monetary policy, inflation heterogeneity and a relaxation of the credit constraint in the nontradable sector of the periphery. When nontradable goods are used as collateral, an increase in their prices can initiate an overborrowing spiral and lead to a balance of payment imbalances. Furthermore, the model endogenizes differences in unit labor costs between the core and the periphery of the Euro area.     

A composite leading indicator of the inflation cycle for the Euro area

We evaluate the performance of composite leading indicators of turning points of inflation in the Euro area, constructed by combining the techniques of Fourier analysis and Kalman filters with the National Bureau of Economic Research methodology. In addition, the study compares the empirical performance of Euro Simple Sum and Divisia monetary aggregates and provides a tentative answer to the issue of whether or not the UK should join the Euro area. Our findings suggest that, first, the cyclical pattern of the different composite leading indicators very closely reflect that of the inflation cycle for the Euro area; second, the empirical performance of the Euro Divisia is better than its Simple Sum counterpart and third, the UK is better out of the Euro area.     

Testing similarities of short-run inflation dynamics among EU-25 countries after the Euro

In this paper, we introduce two new definitions of pair-wise and multi-wise similarity between short-run dynamics of inflation rates in terms of equality of forecast functions and show that in the context of invertible ARIMA processes the autoregressive metric introduced by Piccolo (1990) is a useful measure to evaluate such similarity. Then, we study the similarity of short-run inflation dynamics across European Union (EU)-25 Member States during the Euro period. Consistent with studies on inflation differentials and inflation persistence, our findings suggest that after seven years from the launch of the Euro the degree of similarity of short-run inflation dynamics across Euro area countries is still weak. By contrast, we find that EU countries not adopting the common currency, whether old EU or new accession Members, display a higher degree of inflation dynamics similarity both among each other and with Euro area countries.     

欧元区成员国通胀差异成因研究

在欧元区内部,不同国家之间的通胀率存在不容忽视的差别。欧元区各经济体间究竟为什么会存在差别如此之大的通胀率呢?什么因素及在多大程度上影响了通胀率的差异?文章从巴拉萨—萨缪尔森效应、价格的收敛效应、输入性通胀、本国要素市场结构差异、本国财政政策和经济周期等六个方面,使用实证数据和面板数据回归探讨了这些问题。     

Oil and the Euro area economy

We examine the macroeconomic effects of different types of oil shocks and the oil transmission mechanism in the Euro area. A comparison is made with the US and across individual member countries. First, we find that the underlying source of the oil price shift is crucial to determine the repercussions on the economy and the appropriate monetary policy reaction. Second, the transmission mechanism is considerably different compared to the US. In particular, inflationary effects in the US are mainly driven by a strong direct pass-through of rising energy prices and indirect effects of higher production costs. In contrast, Euro area inflation reacts sluggishly and is much more driven by second-round effects of increasing wages. The monetary policy reaction of the ECB to oil shocks is also strikingly different compared to the FED. The inflation objective, relative to the output stabilization objective, appears more important for Euro area monetary authorities than for the FED. Third, there are substantial asymmetries across member countries. These differences are due to different labour market dynamics which are further aggravated by a common monetary policy stance which does not fit all.
--- Gert Peersman and Ine Van Robays     

Inflation persistence in the Euro area before and after the European Monetary Union

This paper provides new evidence on inflation persistence before and after the European Monetary Union (EMU). Taking into account fractional integration of inflation, we confirm that inflation dynamics differed considerably across Euro area countries before the start of EMU. Since 1999, however, results obtained from panel estimation indicate that the degree of long run inflation persistence has converged. In line with theoretical predictions, we find that the persistence of inflation has significantly decreased in the Euro area, probably as a result of the more effective monetary policy of the ECB.     

Relative Price Changes and Households' Welfare in Italy

The entrance of Italy in the Euro area in 2001 has given rise to a wide debate about the perception of inflation on households' well‐being. However, most of the debate has involved the measurement of the “correct” consumer price index at the national level. Much less analysis has been carried out on the distributional consequences of inflation on every household. The paper addresses this issue by performing a microsimulation analysis of the impact of inflation on Italian households in the period 1997–2007. It is shown that the impact of inflation has an ambiguous path over the period, with a large concentration of welfare losses around the introduction of the Euro currency. In particular, it is found that poorer and larger households are severely hurt by inflation and that the prices of gas and gasoline are largely responsible for determining the living conditions of Italian households.     

The convergence of inflation rates in the EU-12 area: A distribution dynamics approach

This paper provides an assessment of Euro area inflation dynamics based on the distribution dynamics approach. It is found that raw series and trends have converged, although the convergence process has not been constant over time. Inflation cycles still lack of synchronization over short time horizons. In search for an economic explanation for cyclical inflation dynamics, the paper suggests that country-specific labor market institutions are likely to affect inflation outcomes above all in high inflation countries. Moreover, the cyclical inflation divergence arises from output fluctuations.     

Inflation Linkages Within The Eurozone: Core vs. Periphery

We examine the process of inflation transmission among GIIPS countries (Greece, Ireland, Italy, Portugal and Spain) and Germany. Our findings suggest that inflation spillovers have increased since 2001. We also find that peripheral economies are (dis‐)inflation transmitters to the core. This finding is significant for policy formulation, given the very low inflation environment that currently exists in the Euro area and the macroeconomic implications that arise from this.     

JOINING EUROPEAN MONETARY UNION: A REAL OPTIONS PERSPECTIVE

We examine the real option implicit in countries' decisions on whether to join a monetary union when future benefits of this move are uncertain. Our theoretical model is calibrated for the current Euro‐12 area and EU‐15 outs, proxying policymakers' inflation preferences with unemployment rates, debt‐to‐GDP and potential‐to‐actual‐GDP ratios. The Euro‐12 area is generally ready or close to wanting to expand, whereas the EU‐15 outs are unready to make that move at present and have widely varying probabilities of wanting to do so in the future, depending on the measure used.     

A persistence-weighted measure of core inflation in the Euro area

We propose a new core inflation measure for the Euro area which places the emphasis on the more lasting, i.e. persistent, price developments at a disaggregated level. The importance of each component of the HICP is reweighted according to its relative persistence, as measured by the sum of the autoregressive coefficients or by an indicator of mean reversion. Unlike headline inflation, our baseline core inflation measure is highly correlated with ECB monetary policy decisions, which could mean that they contain ex ante (pre monetary policy) information on inflationary pressure.     

The inflation rates may accelerate after all: panel evidence from 19 OECD economies

The stationarity of inflation has many important economic implications. Most panel-based empirical studies do not handle cross-sectional dependence, which will result in power distortion. This paper applies a nonlinear IV estimator to calculate the test statistic of panel unit root (Chang in J Econom 110:261–292, 2002), which accounts for general cross-sectional correlation. Using monthly inflation rates, two statistics proposed by Im et al. (J Econom 115:53–74, 2003) reject the unit root; however, the nonlinear IV statistic accepts the unit root. That is, the ignored cross-sectional correlation may lead to over-rejection of the unit root null. In a nutshell, unlike current literature, the inflation rates may accelerate after all.     

Time-varying inflation persistence in the Euro area

This paper investigates how inflation persistence in the Euro area has evolved between 1991 and 2006. Employing an ARMA(1,11) model with time-varying autoregressive parameter, we find that inflation persistence has fallen markedly since the third stage of the EMU began in January 1999 and inflation no longer exhibits unit-root behaviour.     

Threshold,smooth transition and mean reversion in inflation: New evidence from European countries

Knowing the absence or presence of a unit root in inflation is helpful not only in distinguishing between different economic hypotheses but is also important to monetary authorities in implementing the policies of disinflation. Using data for fourteen European countries, this study investigates the issue of nonstationarity in inflation by considering the possibility of nonlinearity. In particular, we consider the properties of a threshold, smooth transition and structural break in testing for a unit root in the inflation rates. By and large, the results support the view that the inflation rates of the European countries are characterized by a unit root process based on the conventional linear unit root tests. However, the results of the nonlinear unit root tests show that the inflation rates are characterized by nonlinear mean reversion after considering the nonlinear properties of the threshold, smooth transition and structural break. The mean reversion in inflation favors the hypothesis of, for example, the natural rate of inflation and the sticky-price model and implies that shocks only have transitory effects.     

The Global Financial Crisis and Stochastic Convergence in the Euro Area

This paper analyzes the issue of convergence in the original Euro Area countries, and assesses the effect of the global financial crisis on the process of convergence. In particular, we consider whether the global financial crisis pulled the 12 economies of the Euro Area together or pushed them apart. We investigate the dynamics of stochastic convergence of the original Euro Area countries for inflation rates, nominal interest rates, and real interest rates. We test for convergence relative to Germany, taken as the benchmark for core EU standards, using monthly data over the period January 2001 to September 2010. We examine, in a time-series framework, three different profiles of the convergence process: linear convergence, nonlinear convergence, and linear segmented convergence. Our findings both contradict and support convergence. Stochastic convergence implies the rejection of a unit root in the inflation rate, nominal interest rate, and real interest rate differentials. We find that the differentials are consistent with a unit-root hypothesis when the alternative hypothesis is a stationary process with a linear trend. We frequently, but not always, reject the unit-root hypothesis when the alternative is a stationary process with a broken trend. We also note that the current financial crisis plays a significant role in dating the breaks.     

Perceived inflation under loss aversion

Building on prospect theory, we apply the concept of loss aversion to the formation of inflation perceptions and test empirically for nonlinearities in the inflation-perceptions relation for a panel of 10 Euro area countries. Specifically, under the assumption of loss aversion, inflation changes above a certain reference rate will be perceived more strongly. Rejecting rationality of inflation perceptions in general under symmetric loss and in a majority of cases under flexible loss functions, panel smooth transition models give evidence of nonlinearities in the inflation-perceptions relation regarding both actual inflation and time. This result is confirmed by dynamic fixed effects estimates, where the slope of the estimated value function is significantly steeper in the loss region and the implied average reference inflation rate is found close to 2%.     

Tracking Euro preparations amongst UK SMEs

This paper tracks levels of Euro preparations by UK SMEs with trade links with the Euro currency area using two surveys of the same cross-sectional dataset. The first study was conducted soon after the initial launch of the Euro in 1999. The second study, using the same SMEs, sought to see how Euro preparations had changed by 2002 following the introduction of Euro notes and coins. At the univariate level, the results showed that the proportion of SMEs that were totally prepared increased from 31%?to 44.3%?whilst the proportion not prepared has also increased from 8.9%?to 12.2%. The multivariate results show that directly trading manufacturers with a parent in the Euro area or who are seeking to acquire another company are more likely to have partially prepared for the Euro, which suggests a compliant (‘just another foreign currency’) rather than a strategic approach to the Euro. Trade links do not explain all the differences: incorporated manufacturing firms are significantly more likely to be partially prepared and less likely to be completely unprepared, indicating a possible impact of firm capabilities and sectoral differences. Firms looking to acquire others was the only significant business strategy variable.     

Rethinking wage policy in the face of the Euro crisis. Implications of the wage-led demand regime

Ten years after its introduction, the Euro is in an existential crisis. The crisis is the outcome of economic policies that have aimed at labour market flexibility and financial integration. This paper argues, firstly, that the aggregate demand regime in the Euro area is wage led. While an increase in wages (other things equal) does have a negative effect on investment and on net exports, it does have a positive effect on consumption. As the Euro area is a relatively closed economy, the consumption effect overpowers the investment effect and the export effect. Secondly, we argue that in the Euro area two growth models have emerged: a credit-led and an export-led model. These have given rise to the imbalances that are at the heart of the Euro crisis. Wage flexibility has proven insufficient to prevent these imbalances. Thirdly, we advocate a system of coordinated wage bargaining that aims at wages rising in line with productivity growth and a substantially upward-revised inflation target. If the project of European economic integration is to survive, it needs a drastic change in direction. An important building block of this redirection is a rethinking of the role of wage policy.     

The New Keynesian Phillips curve in Europe: does it fit or does it fail?

The canonical New Keynesian Phillips curve specifies inflation as the present-value of future real marginal costs. This paper exploits projections of future real marginal costs generated by VAR models to assess the model’s ability to match the behavior of actual inflation in the Euro area. The model fits the data well at first sight. A set of bias-corrected bootstrapped confidence bands, however, reveals that this result is consistent with both a well fitting and a failing model. These findings also hold for the hybrid version of the Phillips curve.