INFLATION IN CHINA: MODELLING A ROLLER COASTER RIDE

Abstract.  The New Keynesian Phillips curve (NKPC) posits the dynamics of inflation as forward looking and related to marginal costs. In this paper we examine the empirical relevance of the NKPC for China. The empirical results indicate that an augmented (hybrid) NKPC gives results that are consistent with the data generating process. It is in this respect that the NKPC provides useful insights into the nature of inflation dynamics in China as well as useful insights for the conduct of monetary policy.     

The empirical validity of the New Keynesian Phillips curve using survey forecasts of inflation

This paper investigates the performance of the New Keynesian Phillips curve when survey forecasts of inflation are used to proxy for inflation expectations. Previous authors such as Brissimis and Magginas (2008) have applied survey measures of inflation expectations to the NKPC, and have concluded that these estimates are superior to those estimated using actual data on future inflation. However this approach employs the use of the labor income share as the proxy for real marginal cost, something which is highly problematic once we consider the countercyclicality of this variable. This paper develops and tests a procyclical marginal cost variable alongside various survey measures of inflation forecasts in the NKPC, while recognizing the problem of weak instruments that occurs when estimating the model using conventional GMM. We find that the NKPC produces a counter-intuitive negative and significant coefficient on procyclical marginal cost when surveys of inflation forecasts are used, which casts serious doubt on the empirical viability of the NKPC model, even when estimated with survey inflation forecasts.     

The asymmetry of the New Keynesian Phillips Curve in the euro-area

Using a two-stage quantile regression framework, we uncover significant asymmetries across quantiles for all coefficients in an otherwise standard New Keynesian Phillips Curve (NKPC) for the euro area. A pure NKPC specification accurately captures inflation dynamics at high inflation quantiles.     

Output,Inflation and the New Keynesian Phillips Curve

Explicit modelling of factor markets clarifies two fundamental aspects of the New Keynesian Phillips Curve (NKPC). First, we clarify the relationship between output and marginal cost. Second, for the NKPC in inflation–output space, we identify the key stochastic influences on inflation without recourse to ad hoc cost or excess demand shocks. The econometric implementation of this clarified NKPC, which evolves strictly according news on the stream of future marginal costs, allows us jointly to derive inflation as a forecast of future variables. Our approach clarifies the empirical successes and failures of the NKPC and allows us to provide new aggregate evidence on the degree of price rigidity in the UK economy.     

New Keynesian Phillips Curve and inflation dynamics in Australia

The New Keynesian Phillips Curve (NKPC) was developed as a response to the New Classical critique that Keynesian macroeconomics lacked micro-foundations. The NKPC provides theoretical micro-foundations that attempt to explain, inter alia, nominal rigidities and, explicitly price stickiness. This paper investigates the validity of the NKPC for Australia. In contrast to the findings for the USA and Euro area, we find that neither the output gap nor marginal cost appears to be a key driving force variable across different set of instruments and estimators (GMM and 2SLS) over the sample period from 1959 to 2009. The flattening of the NKPC along with significant presence of price stickiness is also found in the data. In particular, the reduced form coefficients and implied estimates from the structural parameters of the model support the view that inflation dynamics are forward looking while the role of lagged inflation is also statistically important only after 1980s. However, we claim that the forward looking baseline NKPC contrary to the hybrid NKPC is stable and better explains inflation dynamics for the Australian economy.     

Product market regulation,trend inflation and inflation dynamics in the new Keynesian Phillips curve

In this empirical paper, we take a close look at the impact of the observed decline in the product market regulation, and hence in the barriers to entry and in impediments to competition, on inflation dynamics since the early 1980s.We use an enlarged new Keynesian Phillips curve (NKPC) allowing for entry of firms and increasing competitive pressures with the number of firms and non zero trend inflation.Using OECD indicators on product market regulations, characterized by persistent fluctuations, and taking into account the non stationary properties of the inflation process, we investigate the empirical relevance of this NKPC for inflation dynamics in the US and France, assuming VAR expectations. The results point out that product market regulation is a good candidate as an exogenous structural source of the observed persistence in inflation for the past thirty years in both the US and France.     

Inflation Dynamics in the New EU Member States: How Relevant Are External Factors?

In this paper we evaluate the relative influence of external versus domestic inflation drivers in the 12 new European Union (EU) member countries. Our empirical analysis is based on the New Keynesian Phillips Curve (NKPC) derived in Galí and Monacelli (2005 ) for small open economies (SOE). Employing the generalized method of moments (GMM), we find that the SOE NKPC is well supported in the new EU member states. We also find that the inflation process is dominated by domestic variables in the larger countries of our sample, whereas external variables are mostly relevant in the smaller countries.     

Comparing alternative Phillips curve specifications: European results with survey-based expectations

This article examines inflation dynamics in Europe. Econometric specification tests with pooled European data are used to compare the empirical performance of the New Classical, New Keynesian and Hybrid specifications of the Phillips curve. Instead of imposing any specific form of expectations formation, direct measures, i.e. Consensus Economics survey data are used to proxy economic agents’ inflation expectations. According to the results, the New Classical Phillips curve has satisfactory statistical properties. Moreover, the purely forward-looking New Keynesian Phillips curve is clearly outperformed by the New Classical and Hybrid Phillips curves. We interpret our results as indicating that the European inflation process is not purely forward looking and inflation cannot instantaneously adjust to changes in expectations. Consequently, even allowing for possible nonrationality in expectations results in a lagged inflation term entering the New Keynesian Phillips curve for inflation dynamics in Europe.     

Does the New Keynesian Phillips curve need countercyclical markups?

This paper examines the behavior of four types of markup measures and its implications for the new Keynesian Phillips curve (NKPC). The four types of measures are a procyclical measure, a weakly procyclical measure, an acyclical measure and a countercyclical measure. Motivated by the fact that the U.S. markup has shifted up dramatically since the early 2000s, the paper also presents both empirical dynamics and a new Keynesian model featuring nonstationary markups. After inspecting empirical dynamics of key macroeconomic variables and the performance of the model, it points out that weakly procyclical or acyclical markups are more consistent with the purely forward-looking NKPC. Moreover, a major shortcoming of standard new Keynesian models is their inability to trace the actual behavior of the markup in response to a demand shock.     

Forecasting Canadian inflation: A semi-structural NKPC approach

We examine whether alternative versions of the New Keynesian Phillips Curve equation contain useful information for forecasting the inflation process. We notably consider semi-structural specifications which combine, for closed- and open-economy versions of the model, the structural New Keynesian equation with time series features. Estimation and inference are conducted using identification-robust methods to address the concern that NKPC models are generally weakly identified. Applications using Canadian data show that all the considered versions of the NKPC have a forecasting performance that comfortably exceeds that of a random walk equation, and moreover, that some NKPC versions also significantly outperform forecasts from conventional time series models. We conclude that relying on single-equation structural models such as the NKPC is a viable option for policymakers for the purposes of both forecasting and being able to explain to the public structural factors underlying those forecasts.     

Reconciling microeconomic and macroeconomic estimates of price stickiness

This paper attempts to reconcile the high estimates of price stickiness from macroeconomic estimates of a New-Keynesian Phillips curve (NKPC) with the lower values obtained from surveys of firms’ pricing behaviour. This microeconomic evidence also suggests that the frequency with which firms adjust their prices varies across sectors. Building on the insights of Carvalho (2006), we present Monte Carlo evidence that suggests that in the presence of this heterogeneity estimates of the NKPC obtained using conventional methods, such as GMM, are likely to considerably overstate the degree of aggregate price stickiness. Furthermore, if roundabout production is a characteristic of the economy the NKPC will falsely suggest that a sizeable fraction of prices are indexed to past inflation. These problems arise because of a type of misspecification and a lack of suitable instruments.     

Inflation Dynamics in the Euro Area and the Role of Expectations

This paper examines the empirical performance of the New Keynesian Phillips curve and its hybrid specification in the euro area. Instead of imposing rational expectations, direct measures, i.e. OECD forecasts, are used as empirical proxies for economic agents’ inflation expectations. Real marginal costs are proxied by three alternative measures. The results suggest that once the rational expectations hypothesis is relaxed and directly measured expectations are used, the European inflation process can be modeled using the forward-looking New Keynesian Phillips curve. However, when allowing for possible non-rationalities in expectations, inflation can be modeled more accurately by the hybrid Phillips curve with the additional lagged inflation term. In this approach, output gap turns out to be at least as good as labor income share as a proxy for real marginal cost. Moreover, the inflation process seems to have become more forward-looking in the recent years of low and stable inflation.The views expressed are those of the author and do not necessarily reflect the views of the Bank of Finland. Special thanks are due to the editor, two anonymous referees, Juha Tarkka, Jouko Vilmunen and Matti Virén for useful comments. I am also grateful to David Mayes and Geoffrey Wood for helpful suggestions and to Heli Tikkunen for excellent research assistance. For their constructive comments, I would also thank participants in the conference on the Eurosystem Inflation Persistence Network at the ECB, which was held in Frankfurt in December 2003.     

Inflation dynamics in open economies: Empirical evidence for G7 countries on the role of import prices and the cost channel

The supply side effects of both the nominal interest rate (i.e., the cost channel) and import prices on inflation are very important for the design of monetary policy. However, the empirical identification of the cost channel (traditionally associated with the advance payment of wages) has ignored import prices. We start by deducting a New Keynesian Phillips Curve (NKPC) which shows that ignoring import prices in the estimation of the cost channel may lead to incorrect results. Taking this into account, we study the empirical relevance of the cost channel and import prices using the NKPC for the G7 countries. We test whether the estimation of the cost channel is affected when the price of imported inputs is considered; if it is relevant to extend the cost channel given that imports of final consumption goods are also paid in advance; if imports should be treated as inputs and/or consumption goods, and if there is an immediate or slow exchange rate pass-through. Empirical results indicate that the cost channel is present in imported consumption goods in particular, and import prices play an important role in explaining inflation dynamics.     

基于新凯恩斯混合菲利普斯曲线的中国货币状况指数构建及其应用

实证研究表明,我国的菲利普斯曲线是一条兼顾前瞻性和后顾性的新凯恩斯混合型菲利普斯曲线。有鉴于此,本文通过构建一个新凯恩混合斯菲利普斯曲线方程来估计中国MCI的权重。对这一新凯恩斯菲利普斯曲线方程的GMM估计结果表明,中国MCI三个要素（利率、汇率和货币供应量）的权重比例为1：9.8：35.1。分析显示我们构建的MCI指数走势很好地对应了中国通货膨胀的反向运动。进一步的计量和统计分析表明,我们构建的MCI指数不但可以作为中国货币政策的信息指示器,还是一个潜在的货币政策操作目标变量,但还不足以用作诸如BT型和Ball型等形式的货币政策规则。     

Do professional forecasters behave as if they believed in the New Keynesian Phillips Curve for the euro area?

This paper finds that participants in the European Central Bank’s Survey of Professional Forecasters have submitted forecasts that are consistent with a (mostly forward-looking) empirical version of the New Keynesian Phillips Curve for the euro area. The estimation technique takes advantage of the panel nature of the Survey of Professional Forecasters’ dataset to exploit both its time series and cross-section dimensions, and to control for unobservable individual heterogeneity across forecasters. The estimation results suggest that euro-area inflation forecasts have reacted less to unemployment forecasts after the start of the financial crisis but another cost measure (energy inflation) remains significant. This finding is consistent with a flatter Phillips Curve in the euro area after 2007. However, the reasons suggested by the International Monetary Fund for this finding, namely a better anchoring of inflation expectations and increases in structural unemployment do not seem to find support in the survey data. Instead, the expectations for compensation per employee submitted by professional forecasters are consistent with the existence of downward real-wage rigidities in euro-area labour markets.     

Inflation persistence and exchange rate regime: Implications for dynamic adjustment to shocks in a small open economy

The paper examines implications of inflation persistence for business cycle dynamics following terms of trade shock in a small oil producing economy, under inflation targeting and exchange rate targeting regimes. It is shown that due to the ‘Walters critique’ effect, the country’s adjustment paths are slow and cyclical if there is a significant backward-looking element in the inflation dynamics and the exchange rate is fixed. It is also shown that such cyclical adjustment paths are moderated if there is a high proportion of forward-looking price setters in the economy, so that when the Phillips curve becomes completely forward-looking cyclicality in adjustment paths disappears and the response of the real exchange rate becomes hump-shaped. In contrast, with an independent monetary policy, irrespective of the degree of inflation persistence, flexible exchange rate allows to escape severe cycles, which results in a smooth response of the real exchange rate.     

The New Keynesian Phillips Curve and Inflation Expectations: Re-Specification and Interpretation

A theoretical analysis of the new Keynesian Phillips curve (NKPC) is provided, formulating the conditions under which the NKPC coincides with a real-world relation that is not spurious or misspecified. A time-varying-coefficient (TVC) model, involving only observed variables, is shown to exactly represent the underlying “true” NKPC under certain conditions. In contrast, “hybrid” NKPC models, which add lagged-inflation and supply-shock variables, are shown to be spurious and misspecified. We also show how to empirically implement the NKPC under the assumption that expectations are formed rationally. We are grateful to C. D. Aliprantis, Harris Dellas and Arnold Zellner for helpful comments. The questions and comments of an anonymous referee were extremely stimulating. The views expressed are the authors’ own and do not constitute policy of their respective institutions.     

Prospects for inflation in a high pressure economy: Is the Phillips curve dead or is it just hibernating?

As the US labor market has tightened beyond full employment with relatively little evidence of inflation pressure, observers are increasingly inclined to declare the demise of the Phillips curve, that is, the flattening of its slope to zero. This paper reviews a substantial range of empirical evidence on this point, by assessing the performance of the conventional expectations-augmented Phillips curve for both prices and wages, based on both historical macro or national level data and panel data for states and MSAs (cities). National data going back to the 1950s and 60s yield strong evidence of negative slopes and significant nonlinearity in those slopes, with slopes much steeper in tight labor markets than in easy labor markets. This evidence of both slope and nonlinearity weakens dramatically based on macro data since the 1980s for the price Phillips curve, but not the wage Phillips curve. However, the endogeneity of monetary policy and the lack of variation of the unemployment gap, which has few episodes of being substantially below zero in this sample period, makes the price Phillips curve estimates from this period less reliable. At the same time, state level and MSA level data since the 1980s yield significant evidence of both negative slope and nonlinearity in the Phillips curve. The difference between national and city/state results in recent decades can be explained by the success that monetary policy has had in quelling inflation and anchoring inflation expectations since the 1980s. We also review the experience of the 1960s, the last time inflation expectations became unanchored, and observe both parallels and differences with today. Our analysis suggests that reports of the death of the Phillips curve may be greatly exaggerated.     

Vacancies, unemployment, and the Phillips curve

The canonical new Keynesian Phillips curve has become a standard component of models designed for monetary policy analysis. However, in the basic new Keynesian model, there is no unemployment, all variation in labor input occurs along the intensive hours margin, and the driving variable for inflation depends on workers’ marginal rates of substitution between leisure and consumption. In this paper, we incorporate a theory of unemployment into the new Keynesian theory of inflation and empirically test its implications for inflation dynamics. We show how a traditional Phillips curve linking inflation and unemployment can be derived and how the elasticity of inflation with respect to unemployment depends on structural characteristics of the labor market such as the matching technology that pairs vacancies with unemployed workers. We estimate on US data the Phillips curve generated by the model. While we can reject the baseline new Keynesian Phillips curve in favor of the search-frictions specification, we show it is still too stylized to fully describe the dynamics of firms’ marginal costs.     

Banking and the role of money in the business cycle

This paper enriches a standard New Keynesian model with a simple banking sector to investigate the role of money in the business cycle. Maximum likelihood estimation of the model suggests that money balances play a significant role in explaining the intertemporal allocation of consumption and the dynamics of inflation as described by the forward-looking IS and Phillips curves. Nonetheless, the responses of the model’s variables to shocks remain qualitatively similar to a model without money, suggesting that the omission of money balances leaves the model’s transmission mechanism unaffected.