WELFARE COST OF INFALTION IN A NEW KEYNESIAN MODEL

We study the welfare cost of inflation in a new Keynesian dynamic stochastic general equilibrium model. Nominal prices and wages are subjected to Taylor‐style adjustments in the benchmark model. We find that the welfare cost of inflation in a new Keynesian dynamic stochastic general equilibrium model is much higher than its counterpart in a real business cycle model. We also find that the welfare cost of inflation increases linearly with the inflation rate with the introduction of monopolistic competition but rises faster as the inflation rate increases with the introduction of nominal rigidity. Alternative price and wage setting schemes, such as Rotemberg and Calvo‐style adjustments would yield welfare costs of moderate inflation that are 2–10 times higher.     

Budgetary policies in a DSGE model with finite horizons

This paper presents a dynamic stochastic general equilibrium model with nominal rigidities, capital accumulation and finite horizons. Our New Keynesian framework exhibits intergenerational wealth effects and is intended to investigate the macroeconomic implications of fiscal policy, which is specified by either a debt-based tax rule or a balanced-budget rule allowing for temporary deficits. The model predicts that fiscal expansions generate a trade-off in output dynamics between short-term gains and medium-term losses. It is shown that the effects of fiscal shocks crucially depend upon the conduct of monetary policy. Simulation analysis suggests that balanced-budget requirements enhance the determinacy properties of feedback interest rate rules by guaranteeing inflation stabilization.     

Fixed price equilibria in a multifirm model

In a simple temperary equilibrium model with three commodities (labour, goods and money) and two sectors, there are different firms, each having its own production function. There now exist four types of fixed price equilibria (Keynesian, classical, repressed inflation, undercounsumption). In the last type, consumers are not rationed, some producers are rationed on the goods market, and other producers on the labour market. There exist three different aggregate production functions, that have to be applied in Keynesian, classical, and repressed inflation situations respectively. For the fourth case no aggregate production function exists.     

核心通货膨胀:理论模型与经验分析

现有的核心通货膨胀计算方法假设各种商品和服务的价格变化可以表示为核心通货膨胀与异质性相对价格变化之和,然而这种价格变化的分解方式既缺乏理论基础又违背经济直觉。本文将经典的新凯恩斯模型推广到多部门情形,证明了多部门新凯恩斯菲利普斯曲线,提出了各部门商品价格变化的理论分解公式。以这个分解公式为理论基础,本文提出了估计核心通货膨胀的计量经济模型及其两阶段估计方法,给出了根据稳态权重估计核心通货膨胀的简便方法,估计出了我国的核心通货膨胀。有效性检验表明,根据两阶段估计方法和基于稳态权重的估计方法得到的核心通货膨胀都是有效的核心通货膨胀度量。     

A macroeconomic rationing model of the belgian economy

This paper presents a small macroeconometric model that allows explicitly for the existence of rationing on the goods and labour markets and clearly distinguishes the three well-known regimes: Keynesian unemployment, classical unemployment and repressed inflation. The basic structure of the model contains two equations that can be estimated by single equation techniques. Estimation on Belgian postwar data establishes both the feasibility and the usefulness of the quantity rationing approach. Empirical results also reveal after 1972 an increasing discrepancy between the amount of labour supplied and the potential employment level determined by existing production capacities.     

A DSGE-VAR model for forecasting key South African macroeconomic variables

The paper develops a Small Open Economy New Keynesian DSGE-VAR (SOENKDSGE-VAR) model of the South African economy, characterised by incomplete pass-through of exchange rate changes, external habit formation, partial indexation of domestic prices and wages to past inflation, and staggered price and wage setting. The model is estimated using Bayesian techniques on data from the period 1980Q1 to 2003Q2, and then used to forecast output, inflation and nominal short-term interest rate for one-to eight-quarters-ahead over an out-of sample horizon of 2003Q3 to 2010Q4. When the forecast performance of the SOENKDSGE-VAR model is compared with an independently estimated DSGE model, the classical VAR and six alternative BVAR models, we find that, barring the BVAR model based on the SSVS prior on both VAR coefficients and the error covariance, the SOENKDSGE-VAR model is found to perform competitively, if not, better than all the other VAR models.     

An inventory of simple monetary policy rules in a New Keynesian macroeconomic model

We derive necessary and sufficient conditions for simple monetary policy rules that guarantee equilibrium determinacy in the New Keynesian monetary model. Our modeling framework is derived from a fully specified optimization model that is amenable to analytical characterisation. The monetary rules analyzed are variants of the basic Taylor rules ranging from simple inflation targeting (current, forward, backward) to canonical Taylor rules with and without inertial nominal interest rates. We establish that determinacy obtains for a wide range of policy parameters, especially when the monetary authority targets output and smoothes interest rates. Contrary to other results in the literature, we do not find a case for super-inertial interest rate policy.     

A classroom experiment in monetary policy

The authors propose a classroom experiment implementing a simple version of a New Keynesian model suitable for courses in intermediate macroeconomics and money and banking. Students play as either the central bank or members of the private sector. The central banker sets interest rates to meet twin objectives for inflation and the output gap or to meet only an inflation target. In both settings, private sector agents are concerned with correctly forecasting the inflation rate. The authors show that an experiment implementing this setup is feasible and yields results that enhance understanding of the New Keynesian model of monetary policy. They propose alternative versions where the central bank is replaced by a policy rule and provide suggestions for discussing the experimental results with students.     

Inflation dynamics and the cost channel of monetary transmission

Evidence from vector autoregressions indicates that the impact of interest rate shocks on macroeconomic aggregates can substantially be affected by the so-called cost channel of monetary transmission. In this paper, we apply a structural approach to examine the relevance of the cost channel for inflation dynamics in G7 countries. Since firms’ costs of working capital increase with interest rates, we augment a (hybrid) New Keynesian Phillips curve by including the short-run nominal interest rate. We find significant and varying direct interest rate effects for the majority of countries, including member countries of the EMU. Simulations further demonstrate that the estimated interest rate coefficients can substantially affect inflation responses to monetary policy shocks, and can even lead to inverse inflation responses, when the cost channel is - relative to the demand channel - sufficiently strong.     

Real wages,real interest rates,and the Phillips curve

This article argues that any analysis of a Phillips curve should include the real interest rate in addition to inflation and real wages as any changes in the interest rate changes the labour–capital input mix in the production process leading to a change in the level of employment in the economy. To justify this argument a Phillips curve model is developed, which includes the real interest rate in addition to inflation and real wages. After the diagnosis of the time series properties of the data, an error correction model is developed and estimated using a set of US annual data from 1948 to 1996. The estimated parameters of the model do suggest that one should really take into consideration of the real interest rate while analysing the Phillips curve. A non-nested test (F-test) also suggests that the Phillips curve model with real interest rate as an additional variable performs better than the conventional method that does not include the real interest rate.     

中国货币政策的福利损失及中介目标的选择——基于新凯恩斯DSGE模型的分析

文章运用新凯恩斯框架下的DSGE模型对中国货币政策的福利损失进行分析,研究表明:(1)名义利率对通货膨胀的反应越是敏感,则福利损失越小,因此,货币当局应该充分利用利率政策稳定价格水平;(2)名义利率对产出的反应越是敏感,则福利损失越大,因此,货币当局不宜运用利率政策影响经济增长速度;(3)利率平滑对福利的影响不大,货币当局的利率政策应该直接针对通货膨胀,而不应该追求利率本身的稳定;(4)在一定条件下,不同的利率政策规则造成的福利损失差别不大,货币当局可以从便利的角度出发,根据上期的通货膨胀率和产出水平来设定当期的名义利率;(5)与利率变动相比,货币供应量的变动造成福利损失更大,因此,货币政策的中介目标应该逐步由货币供应量转向利率。     

A small New Keynesian state space model of the Australian economy

Using a small New Keynesian state space macroeconomic model, we apply maximum likelihood estimation and the Kalman filter to obtain joint estimates of the unobservable medium-run paths of potential output and its normal rate of growth, the NAIRU, the neutral real interest rate and the subjective discount factor for Australia from 1984Q1 to 2006Q4. Using the estimated model we obtain dynamic forecasts for output, unemployment, and inflation to compare with the actual data from 2007Q1 to 2008Q4. Combining the estimated model with a monetary policy rule, we examine impulse responses of inflation and the output and unemployment gaps to shocks associated with the global financial crisis of 2008.     

HUNGARY'S EUROZONE ENTRY DATE: WHAT DO THE MARKETS THINK AND WHAT IF THEY CHANGE THEIR MINDS?

This article investigates the potential impact of a shift in market expectations about a country's eurozone entry date on long-term yields and the spot exchange rate in a simple uncovered interest parity (UIP) framework. The results suggest that the size of the reactions depend on how far the entry date is postponed, how far current inflation is from the Maastricht-satisfying level, and whether the credibility of the central bank's target inflation path is sensitive to changes in the expected entry date. In the empirical part, the authors apply the framework for Hungary and draw some policy conclusions for the timing of ERM II entry. (JEL E44 , E52 , F33 )     

Inflation targets and endogenous wage markups in a New Keynesian model

Empirical contributions show that wage re-negotiations take place while expiring contracts are still in place. This is captured by assuming that nominal wages are pre-determined. As a consequence, wage setters act as Stackelberg leaders, whereas in the typical New Keynesian model the wage-setting rule implies that they play a Nash game. We present a DSGE New Keynesian model with pre-determined wages and money entering the representative household’s utility function and show how these assumptions are sufficient to identify an inverse relationship between the inflation target and the wage markup (and thus employment) both in the short and the long run. This is due to the complementary effects that wage claims and the inflation target have on money holdings. Model estimates suggest that a moderate long-run inflation rate generates non-negligible output gains.     

Does monetary policy affect the long-run expectations of non-stationary real interest rates?

In this article, we analyse whether the monetary policy affects the long-run expectation of the non-stationary real interest rate. The analysis is conducted through Beveridge–Nelson trend decomposition within a cointegrated vector autoregressive model based on the New Keynesian framework. We suggest an augmented test of the conventional co-integration test on the non-stationarity of the real interest rate, which checks whether the co-integration coefficient of inflation is one and the output gap affects the co-integration equilibrium of the nominal interest rate. We further suggest decomposing the long-run expectation of the non-stationary real interest rate into three trends: the interest rate shock (including the monetary shock), inflation shock and output gap shock. According to empirical analyses using monthly US data after the Korean War, the long-run expectation of the non-stationary real interest rate contains an interest rate shock trend and the impulse of the federal fund target rate induces a significant response of the interest rate shock trend. However, the interest rate shock trend has a very small portion of the long-run expectation of the non-stationary real interest rate, which may explain why the monetary policy was not particularly effective in the economic recovery after the global financial crisis.     

Slow Growth,Trade Liberalisation and the Mexican Disease: A medium-term macroeconomic model with an application to Mexico

The purpose of this paper is to analyse Mexico's medium-term macroeconomic outlook, from the vantage point of the country's recent development. The analysis is carried out within a formal model for the determination of the rates of employment and inflation under conditions of external and internal balance. In equilibrium, the real wage and the rates of employment and inflation depend inter alia on the level of labour productivity, the ratio of foreign debt to domestic output, and the foreign trade regime. Econometric tests based on Mexican data support the model's basic postulates and, in addition, reveal the presence of structural change, linked to trade reform, in the trade balance and the manufactures' productivity growth equations. The macroeconomic implications of such parameter changes are discussed with the help of the analytical model developed.     

Time-varying U.S. inflation dynamics and the New Keynesian Phillips curve

This paper introduces a form of boundedly-rational inflation expectations in the New Keynesian Phillips curve. The representative agent is assumed to behave as an econometrician, employing a time series model for inflation that allows for both permanent and temporary shocks. The near-unity coefficient on expected inflation in the Phillips curve causes the agent's perception of a unit root in inflation to become close to self-fulfilling. In a “consistent expectations equilibrium,” the value of the Kalman gain parameter in the agent's forecast rule is pinned down using the observed autocorrelation of inflation changes. The forecast errors observed by the agent are close to white noise, making it difficult for the agent to detect a misspecification of the forecast rule. I show that this simple model of inflation expectations can generate time-varying persistence and volatility that is broadly similar to that observed in long-run U.S. data. Model-based values for expected inflation track well with movements in survey-based measures of U.S. expected inflation. In numerical simulations, the model can generate pronounced low-frequency swings in the level of inflation that are driven solely by expectational feedback, not by changes in monetary policy.     

Oscillations between repressed inflation and Keynesian equilibria due to inertia in decision making

In the framework of a rationed equilibrium economy as introduced by Malinvaud, the paper studies the long term evolution of the economy around the Repressed inflation—Keynesian boundary, introducing timelags in agents' response to changes in prices and wages. Depending on the distribution of timelags we show that the economy exhibits either decreasing oscillations around the boundary, eventually converging to zero, or (semi-) stable steady oscillations between the two regions. The obtained results therefore clarify the validity of the claim that a basic feature of modern economies is the cycling motion between Repressed inflation and Keynesian equilibria.     

Firms’ money demand and monetary policy

Standard New Keynesian models for monetary policy analysis are ‘cashless’. When the nominal interest rate is the central bank's operating instrument, the LM equation is endogenous and, it is argued, can be ignored. The modern theoretical and quantitative debate on the importance of money for monetary policy conduct, however, overlooks firms’ money demand. Working in an otherwise canonical New Keynesian setup, we show that macroeconomic dynamics are critically affected by the firms’ money demand choice. Under the conventional Taylor‐rule framework, we prove that equilibrium determinacy may require either an active interest rate policy, overreacting to inflation, or a passive interest rate policy, underreacting to inflation, depending on the elasticity of production with respect to cash balances. We then develop a numerical analysis to evaluate our theoretical results. We find that macroeconomic stability is more likely to occur under an active, but not overly aggressive, monetary policy stance. We also examine the dynamic effects of forward‐looking feedback rules. We show that, in this policy regime, indeterminacy is likely to be induced by both active and passive rules, even for relatively low productivity effects of money.