Domestic and global output gaps as inflation drivers: What does the Phillips curve tell?

We study how domestic and global output gaps affect CPI inflation. We use a New-Keynesian Phillips curve framework which controls for non-linear exchange rate movements for a panel of 26 advanced and 22 emerging economies covering the 1994Q1−2017Q4 period. We find that both global and domestic output gaps are significant drivers of inflation both in the pre-crisis (1994–2008) and post-crisis (2008–2017) periods. Furthermore, after the crisis, in advanced economies the effect of the domestic output gap declines, while in emerging economies the effect of the global output gap declines. Our results suggest that emerging and advanced economies have become more similar to each other in terms of output gaps as inflation drivers. The paper demonstrates the usefulness of the New Keynesian Phillips curve in identifying the impact of global and domestic output gaps on inflation.     

DID TIME INCONSISTENCY CONTRIBUTE TO THE GREAT INFLATION? EVIDENCE FROM THE FOMC TRANSCRIPTS

We use evidence from detailed records of FOMC deliberations to argue that time inconsistency theory can help explain the excessive monetary expansion that characterized Arthur Burns's tenure as Federal Reserve Chairman (1970–1978). The records suggest that the Fed perceived a Phillips curve tradeoff and political pressures that made it difficult to adopt disinflationary policies; the tendency toward excessively expansionary policy was exacerbated by the short-run planning horizon the Committee faced in each of its meetings. We argue that comparative static predictions of the time inconsistency model are consistent with the rise of inflation during the Burns years and its subsequent fall.     

The optimal neglect of inflation: An alternative interpretation of UK monetary policy during the “Great Moderation”

This paper argues that UK monetary policymakers did not respond to the inflation rate during most of the “Great Moderation” that ran from the early 1990s to the mid-2000s. We derive a generalisation of the New Keynesian Phillips curve in which inflation is a non-linear function of the output gap and show that the optimal response of the policy rule to inflation depends on the slope of the Phillips curve; if this is flat, manipulation of aggregate demand through monetary policy does not affect inflation and so policymakers cannot affect inflation. We estimate the monetary policy rules implied by a variety of alternative Phillips curves; our preferred model is based on a Phillips curve that is flat when output is close to equilibrium. We find that policy rates do not respond to inflation when the output gap is small, a situation that characterised most of the “Great Moderation” period.     

Phillips curve in US: New insights in time and frequency

The paper explores the co-movement between unemployment and inflation rates in US by using a battery of wavelet tools. The dataset covers the period 1945Q1–2017Q4, having quarterly frequency.The main findings reveal a not stable Phillips curve in US, depending on economic context, seasonality and time-persistence. The Phillips curve is not validated during economic turbulences, while it works over expansion economic periods. Even so, the trade-off between unemployment and inflation is unstable under seasonal growth components and time-persistence, running from short- to medium-term. No link between unemployment and inflation is found in the long-term.     

Output gap measurement and the New Keynesian Phillips curve for China

The New Keynesian Phillips curve implies that the output gap, the deviation of the actual output from its natural level due to nominal rigidities, drives the dynamics of inflation relative to expected inflation and lagged inflation. This paper exploits the empirical success of the New Keynesian Phillips curve in explaining China's inflation dynamics with a new measure of the output gap. We estimate the output gap using the Bayesian multivariate Beveridge–Nelson decomposition method, based on a multivariate dynamic model featuring distinct interactions among inflation, money, and real output in China. The empirical results using quarterly data spanning 1979–2010 show that the new measure of the output gap outperforms the traditional measures in fitting the New Keynesian Phillips curve. This result provides useful insights for inflation dynamics and monetary policy analysis in China.     

通货膨胀实时预测及菲利普斯曲线的适用性

本文从实时分析的视角,基于多种退势方法的产出缺口最终估计、准最终估计和实时估计序列,分别构建了四类预测模型对我国通货膨胀率进行预测,分析了产出缺口修正效应和滞后阶数变化效应对通胀预测的影响,并进一步考察了产出缺口在通胀预测中的作用及菲利普斯曲线在通胀预测中的适用性。研究结论表明,通胀率的实时预测效果要明显比基于最终数据的差,其中滞后阶数变化效应对实时预测精度的影响大于产出缺口修正效应;尤为重要的是,尽管在最终数据的预测分析中,产出缺口的引入能够提高通胀率的预测精度,但是在实时预测中,产出缺口没有提供有价值的信息,因此"产出—通胀"型菲利普斯曲线在我国通胀实时预测中并不适用。     

The stability of the Turkish Phillips curve and alternative regime shifting models

This article, presents empirical evidence supporting instability of the Phillips curve in Turkey. We employ the multiple structural break models and the Markov-switching models and then evaluate the performance of the two models. The data pertain to the monthly inflation rate in Turkey for the period of 1987 to 2004. The results show that the Turkish Phillips curve is not linear. There exists no evidence on the asymmetry in the inflation response to output gap. The persistence of inflation is found to be much lower than in linear models. After 2001, slight decline in persistence of inflation is observed. There exits weaker support for the Phillips curve for the periods where the policymakers attempt to take the advantage of the tradeoff between output and inflation relationship.     

The New Keynesian Phillips curve and the role of expectations: Evidence from the CESifo World Economic Survey

We provide evidence on the fit of the hybrid New Keynesian Phillips curve for selected Euro zone countries, the US and the UK. Instead of imposing rational expectations and estimating the Phillips curve by the Generalized Method of Moments, we use direct measures of inflation expectations from the CESifo World Economic Survey. Our main findings are as follows: (i) The use of survey data gives empirical results, which are more reliable than those obtained from the GMM approach. (ii) The purely forward-looking Phillips curve can be rejected in favor of the hybrid New Keynesian Phillips curve. (iii) The estimated coefficients on past inflation are higher when using survey expectations than when using the rational expectations GMM approach. (iv) It remains unclear whether real unit labor costs or a measure of the output gap should be used as a proxy for real marginal costs. (v) Theory-based restrictions lead to an improvement of the empirical results.     

Estimating Europe’s natural rates

This article estimates potential output, the natural rate of unemployment, and the core inflation rate using aggregated euro area data. The empirical model consists of a Phillips curve linking inflation to unemployment. An Okun-type relationship is used to link the output gap to cyclical unemployment. The model further accounts for new developments in unobserved component models by allowing (i) for correlation between shocks to the natural rates and the corresponding gaps and (ii) structural breaks in the drift of potential output and the natural rate of unemployment.     

International spillovers of ECB’s unconventional monetary policy: the effect on Central Europe

We examine how unconventional monetary policy of the European Central Bank (ECB) influences macroeconomic stability in three Central European economies. We estimate various panel vector autoregressions (PVARs) using monthly data from 2008 to 2014. Using the shadow policy rate and central bank assets as measures of unconventional policies, we find that output growth and inflation in Central Europe temporarily increase following an expansionary unconventional monetary policy shock by the ECB. Using both impulse responses and variance decompositions, we find that the effect of unconventional policies on output growth is much stronger than the effect on inflation.     

The economics of the Phillips curve: Formation of inflation expectations versus incorporation of inflation expectations

This paper examines the theory of the Phillips curve, focusing on the distinction between “formation” of inflation expectations and “incorporation” of inflation expectations. Phillips curve theory has largely focused on the former. Explaining the Phillips curve by reference to expectation formation keeps Phillips curve theory in the policy orbit of natural rate thinking where there is no welfare justification for higher inflation even if there is a permanent inflation–unemployment trade-off. Explaining the Phillips curve by reference to incorporation of inflation expectations breaks that orbit and provides a welfare economics rationale for Keynesian activist policies that reduce unemployment at the cost of higher inflation.     

Inflation Dynamics in India: Relative Role of Structural and Monetary Factors

This paper examines the relative role of structural and monetary factors in the variation of inflation in India over the period 1996–1997:Q1 to 2013–2014:Q4. The paper finds that both the monetary factors and the output gap has significant role. The role of the output gap in inflation is found more prominent than the monetary factors like broad money growth, interest rate and change in exchange rate. The depreciation of exchange rate and broad money growth stimulates inflation where as the interest rate is identified as an anti-inflationary monetary instrument. In view of a comprehensive policy for price stability, it is imperative to know the role of sectoral output gap in inflation. The paper, therefore, enquires the relative role of the primary, secondary and tertiary sector output gap in inflation. Output gap of each of these three sectors provokes inflation where the contribution of tertiary sector output gap is found to be the maximum followed by the primary sector and the secondary sector output gap. The prominent role of the output gap and comparatively passive role of monetary factors does not necessarily imply a non-effective monetary policy but suggests that controlling inflation only through the monetary management may not be effective.

     

中国核心通胀率与产出缺口经验分析

利用新菲利普斯曲线,本文设定包含通胀与产出的非观测成分模型估计中国的核心通胀率与产出缺口。通过卡尔曼滤波平滑推断程序,季度通胀和产出均被分解为互相独立的趋势成分和周期成分。估计结果表明,二十年来我国的潜在产出变化相对于传统HP滤波结果更为平滑,其近似呈线性增长。这意味着我国产出特征可通过简洁的趋势平稳过程来描述,而Nelson and Plosser(1982)以来普遍采用的单位根过程未必是刻画我国产出的最优模型。核心通胀率推断还表明,1998-2002年间的通货紧缩并非如物价指数下降表现的一样严重。     

The shape of the Phillips curve: the case of Indonesia

It is recognized that the effectiveness of monetary policy in the control of inflation depends critically on the relationship between inflation and the output gap. During booms, inflation is highly sensitive to monetary influences, but during recessions this influence is considerably muted. However, econometric investigation of this phenomenon has mostly focussed on the developed economies. In this article, the shape of the Phillips curve is investigated for Indonesia. Evidence is found of significant nonlinearities in the inflation–output relationship for Indonesia and it is argued that this relationship is best modelled by the capacity-constraint (L-shape) model.     

Potential output and inflation dynamics after the Great Recession

Ever since the end of the Great Recession, the US economy has experienced a period of mild inflation, which contradicts with the output–inflation relationship depicted by a traditional Phillips curve. This paper examines how the permanent output loss during the Great Recession has affected the ability of the Phillips curve to explain US inflation dynamics. We find great similarity among several established trend–cycle decomposition methods: potential output declined substantially after the Great Recession. Due to the fact that a lower level of potential output implies a lesser deflationary pressure, we then show that the Phillips curve does predict a period of mild inflation. This finding is largely consistent with the observed data.     

Asymmetric effects in the Polish monetary policy rule

In this paper we investigate whether the reaction function of the National Bank of Poland (NBP) is asymmetric according to the level of inflation gap and the level of output gap. Moreover, we test whether these asymmetries might possibly stem from nonlinearities in the Phillips curve. Threshold models are applied and two cases of unknown and known threshold values are investigated. Our results show that the Polish central bank responds more strongly to the level inflation when the level of inflation is relatively high. We find very weak evidence that the level of inflation reacts more strongly to the output gap when the output gap is relatively high. Thus, the asymmetries in the monetary policy rule seem to indicate asymmetric preferences of the central bank.     

公众预期、需求冲击与通货膨胀——兼论通胀持久性的地区差异

本文基于具有微观基础的混合式新凯恩斯菲利普斯曲线模型,利用1985-2009年的省际面板数据,分析了预期因素、需求冲击及产出缺口与通货膨胀之间的动态过程及其地区差异。研究发现：总体上,无论是适应性预期还是理性预期对当期通货膨胀都有较强的推动作用;作为需求冲击的居民消费支出、固定资本形成以及产出缺口对通货膨胀都具有正向拉动作用。从通货膨胀持久性的地区差异上看,西部地区的通胀持续性最长,中部最短。     

Exchange Rate Stability, Inflation, and Growth in (South) Eastern and Central Europe

The authors analyze the impact of the exchange rate regime on inflation and output in (South) Eastern and Central Europe. For the whole observation period the estimations reveal a significant impact of exchange rate stability on low inflation as well as a highly significant positive impact of exchange stability on real growth. When subdividing the period into a "high-inflation" period (1994–97) and a "low-inflation period" (1998–2004), and when removing outliers from the sample, the evidence in favor of a positive association between exchange rate stability and inflation disappears. The association of exchange rate stability with higher real growth remains robust. These findings suggest that membership of the (South) Eastern and Central European countries in the European Monetary Union would have a positive impact on these countries' growth rates.     

Revisiting the inflation–output gap relationship for France using a wavelet transform approach

The purpose of the paper is to revisit the inflation–output gap relationship using a new approach known as the wavelet transform. This approach combines the classical time series analysis with frequency domain analysis and presents the advantages of assessing the co-movement of the two series in the context of both time and frequencies. Using discrete and continuous wavelet methodologies for the study of the inflation–output gap nexus in the case of France, we determine that the output gap is able to predict the inflation dynamics in the short- and medium-runs, and these results have important implications to the Phillips curve theory. More precisely, we discovered that in a discrete wavelet framework, the short- and medium-term fluctuations of both variables are more closely correlated, whereas the continuous wavelet analysis states that the output gap leads inflation in short- and medium-runs.     

Thought experimentation and the Phillips curve

This paper offers the rationale for presenting a particular type of Phillips curve and develops the dynamic behavior of an economy where such a Phillips curve relation is observed. The specific kind of relation that is explored has similarities with the sticky-information Phillips curve of the Mankiw-Reis framework. Nevertheless, it adds an important dimension: firms need to form expectations about current events on past time periods not because of infrequent optimal updating of information but because producers want to evaluate the possibility of taking advantage of information deficiencies on the consumers’ side. A positive probability of ‘fooling’ consumers with a price above the one imposed by market conditions re-shapes the dynamic relation between the inflation rate and the output gap.