Assessing DSGE model nonlinearities

We develop a new class of time series models to identify nonlinearities in the data and to evaluate DSGE models. U.S. output growth and the federal funds rate display nonlinear conditional mean dynamics, while inflation and nominal wage growth feature conditional heteroskedasticity. We estimate a DSGE model with asymmetric wage and price adjustment costs and use predictive checks to assess its ability to account for these nonlinearities. While it is able to match the nonlinear inflation and wage dynamics, thanks to the estimated downward wage and price rigidities, these do not spill over to output growth or the interest rate.     

Price,wage and employment response to shocks: evidence from the WDN survey

We analyse the relative intensity and character of price vs. cost and wage vs. employment firm-level adjustment to cost-push shocks in the European System of Central Banks Wage Dynamics Network (WDN) survey data set. The results document several statistically significant and theoretically sensible relationships: price increases are less likely when product market competition is more intense, and more likely when collective wage agreements or employment protection legislation constrain firm-level reactions. We discuss how changes of such structural and institutional features of firms and of their environment may underlie the evolution of macroeconomic adjustment mechanisms in Europe.     

Lack of confidence,the zero lower bound,and the virtue of fiscal rules

In the presence of the zero lower bound, standard business cycle models with a Taylor-type monetary policy rule are prone to equilibrium multiplicity. A drop in private sector confidence can drive the economy into a liquidity trap without any change in fundamentals. I show, in the context of a standard New Keynesian model, that it is possible to design Ricardian fiscal spending rules that insulate the economy from such expectations-driven liquidity traps. In the case of price adjustment costs, desirable fiscal rules ensure that a drop in confidence does not lead to a decline in real marginal costs. In the case of nominal wage adjustment costs, desirable fiscal spending rules ensure that a drop in confidence does not lead to a decline in the ratio of the marginal rate of substitution between private consumption and hours worked relative to the real wage rate.     

工资粘性、经济波动与货币政策模拟——基于DSGE模型的分析

本文在BGG模型的基础上,引入了工资粘性,使之成为综合考虑价格粘性、金融加速器效应以及工资粘性的DSGE模型,我们模拟并比较了中国不同货币政策的影响。贝叶斯估计结果验证了中国工资粘性的存在,说明中国劳动力市场的配置尚存在改善的余地。货币政策模拟结果显示,价格型货币政策效应较强但持续期较短,而数量型货币政策效应较为温和但影响相对持久,央行需注重价格型货币政策与数量型货币政策的合理搭配与使用。     

NOMINAL AND REAL WAGE RIGIDITIES IN NEW KEYNESIAN MODELS: A CRITICAL SURVEY

Abstract The labour market is receiving increasing attention in the New Keynesian literature. In this paper, I critically survey this literature in order to highlight the role played by wage rigidities in the explanation of fluctuations caused by technology shocks. To this aim, I present a dynamic stochastic general equilibrium model with sticky prices, nominal wage rigidities and hiring costs. The comparison between this model and that of Blanchard and Gali highlights the non‐trivial differences which exist in the way nominal wage and real wage rigidities drive the economy's dynamics. My conclusion is that models incorporating nominal wage rigidities and some degree of price stickiness provide a better account of macroeconomic dynamics than models with real wage rigidities.     

货币政策的数量型工具与价格型工具的调控绩效比较——来自动态随机一般均衡模型的证据

本文基于我国经济发展现实,构建了包含金融加速器、工资调整粘性以及消费惯性的新凯恩斯动态随机一般均衡模型,从货币政策的冲击效应、非政策冲击下宏观经济波动幅度以及中央银行损失函数等三个方面对比了不同货币工具的调控绩效,研究显示,价格型工具的调控绩效优于数量型工具,而稳健性分析也对此提供了进一步证明。因此,中央银行应积极地运用利率工具以更有效控制通货膨胀和实际产出波动,维护宏观经济稳定。     

Price/Wage Staggering and Persistence: A Unifying Framework

Abstract.  In this paper, we provide a general unified framework to clarify the issue of persistence of real effects of money shocks in staggered wage/price models. We mainly aim to: (i) highlight which features of the underlying economy, and particularly of the labour market, are crucial for generating output persistence; (ii) analyse the differences between price and wage staggering.     

Testing a discrete switching disequilibrium model of the UK labour market

This paper develops a test procedure for serial correlation for discrete switching disequilibrium models which include both an endogenous price adjustment equation and lagged dependent variables. The tests are applied to a model of the UK labour market and the model is respecified in the light of the test results.     

Real and nominal wage rigidities in collective bargaining agreements

An earlier study of wage agreements, reached in the Canadian unionized sector between 1976–99, found that wage adjustment is characterized by downward nominal rigidity and significant spikes at zero. We extend this earlier approach to encompass the possibility of real as well as nominal wage rigidity. The addition of real wage rigidity variables enhances earlier results and suggests that real rigidity increases significantly the mass in the histogram bin containing the mean anticipated rate of inflation, as well as in adjacent bins. Downward nominal wage rigidities and spikes at zero remain important.     

Testing Part of a DSGE Model by Indirect Inference

We propose a way of testing a subset of equations of a DSGE model. The test draws on statistical inference for limited information models and the use of indirect inference to test DSGE models. Using the numerical small sample distribution of our test for two subsets of equations of the Smets–Wouters model we show that the test has accurate size and good power in small samples, and better power than using asymptotic distribution theory. In a test of the Smets–Wouters model on US Great Moderation data, we reject the specification of the wage‐price but not the expenditure sector. This points to the wage‐price sector as the source of overall model rejection.     

The Determinants of Price Adjustments in Retail Supermarkets

This paper examines the determinants of price adjustment decisions by supermarkets to increase or decrease prices for 11 different food categories and evaluates the characteristics of these firms that influence these decisions. We use a unique dataset to analyze firm variables and industry variables and their impact on price adjustment in supermarket stores. The study contributes to the price adjustment literature by identifying determinants of price behavior by stores and product category. We find that the rationale for increasing prices differs from that for decreasing prices, retailers make different adjustment decisions based on product category, and market‐level controls have little impact. Copyright © 2015 John Wiley & Sons, Ltd.     

A small linear model of wage- and price-inflation in the Norwegian economy

This paper presents a model of inflation in a small open economy which features both wage-wage linkages and a wage-price spiral. Hence we have a simultaneous structure which contains the conventional Scandinavian model of inflation as a special case. Full system estimation results are reported. Great emphasis is placed on data coherency and on parameter stability. One interesting finding is that both wage growth and the wage level in the exposed (E)-sector are strongly influenced by the outside wage. This contradicts the predictions of the Scandinavian model, which defines the wage-leading role of the E-sector by the absence of outside wage effects in E-sector wage formation. Another result is that the speed of adjustment to exogenous shocks is greater for prices than for wages. This finding may be important in explaining real wage flexibility, which is often seen as the hallmark of low unemployment economies such as the Norwegian.     

Firms' price and wage adjustment in Europe: Survey evidence on nominal stickiness

This paper presents new evidence on the patterns of price and wage adjustment in European firms and on the extent of nominal rigidities. It uses a unique dataset collected through a firm-level survey conducted in 17 European countries and covering various sectors. Several conclusions are drawn from this evidence. Firms adjust wages less frequently than prices, on average every 15 and 10 months, respectively. Price and, especially, wage adjustment exhibit a substantial degree of time-dependence. In particular, wage changes tend to cluster at a specific time of the year, mostly January in the majority of countries. The results of a multivariate analysis indicate that prices are more flexible when competitive pressures in product markets are strong and when labor costs account for a lower fraction of firms' total costs, whereas wages are more flexible when bargaining is decentralized and when the coverage of collective bargaining and the stringency of employment protection legislation are low. Price rigidities are higher in firms with a larger share of high-skilled/white-collar workers.     

The New Keynesian Phillips Curve and staggered price and wage determination in a model with firm-specific labor

We develop a DSGE model with firm-specific labor where wage and price setting are subject to Calvo-type staggering. This is in general an intractable problem due to complicated intertemporal dependencies between price and wage decisions. However, the problem is significantly simplified if we, in line with empirical evidence, assume that prices can be changed whenever wages are. We show that the price- and wage-setting relationships are substantially altered by the introduction of firm-specific labor. Specifically, the inflation response is substantially dampened, whereas the wage inflation response is increased as compared to models with freely mobile labor. These distinctive features of the model with firm-specific labor are supported by empirical evidence from a structural VAR.     

Magazine prices revisited

This paper examines price adjustment behaviour in the magazine industry. In a frequently cited study, Cecchetti ( 1986 ) constructs a reduced‐form (S, s) model for firms. Cecchetti assumes that a firm's pricing rules are fixed for non‐overlapping three‐year intervals and estimates the model using a conditional logit specification from Chamberlain ( 1980 ). The estimates are inconsistent, however, due to the duration‐dependent specification of the model. Two alternative specifications are used to obtain consistent estimation. The consistent estimates continue to provide strong evidence in favour of state‐dependent pricing models, but only weak evidence on the behaviour of price adjustment costs. Copyright © 2006 John Wiley & Sons, Ltd.     

Residential energy demand in the United States: A regional econometric analysis

A static equilibrium and a dynamic partial adjustment model of residential demand for electricity and natural gas are presented and estimated for the United States over a recent period characterized by sharply increasing energy prices. The static model is estimated using Ordinary Least Squares while the instrumental variables method is used for the dynamic partial adjustment model. The estimates of long-run elasticities suggest the residential demand for electricity and natural gas are price and income elastic. Intercept and slope dummies used in the models identify significant regional differences in demand functions.     

Topics in macro-modelling of East European countries in the period of transition

Central and European former Centrally Planned Economies (CPEs) entered a period of transition towards market economies. The evolution is marked by a transition from shortage- to demand-determined economies, associated with the abandonment of price control and the introduction of tight wage control. Stabilization programmes (in Poland from 1990), implementing tough deflationary fiscal and monetary policies, brought about the suppression of hyperinflation. The high adjustment costs — deep recession, high rates of unemployment — are characteristics of the early '90s. The deregulation of the public sector and the building of the private one commenced, and will be a long-lasting process.To meet the changes in economic regimes and mechanisms, the existing models had to be adequately respecified and new models constructed. The large W-5 macromodel for Poland, which covers the final and intermediate demands, had to be extended to introduce the market adjustment mechanisms and, more broadly, the financial flows. To meet the needs of short-term financial policies, new quarterly models had to be built, as, for instance, the WK macromodel for the Polish economy. The paper discusses the major problems of the models' specification under the data constraints.     

Dynamic Structure of Disequilibrium Models

This paper investigates the dynamic structure of a standard disequilibrium model. By assuming that the model variables are non-stationary time series with respect to ample empirical evidence, we find the following: 1) It is the exogenous variables rather than the price adjustment process that form the real adjustment force of the model; 2) Quantity disequilibrium and price disequilibrium are isomeric in the model, and follow a weakly stationary process when all the variables areI (1) nonstationary; 3) The disequilibrium process has a none-zero mean when the weakly exogenous variables of the demand equation do not cointegrate with those of the supply equation, corresponding to certain 'chronic disequilibrium' phenomena; 4) The isomerism between quantity disequilibrium and price changes makes it unnecessary to lean on the 'min condition' to characterise disequilibrium.     

物价水平、工资差异与审计定价

中国审计市场具有明显的地域特征,上市公司的地域位置会对审计定价产生影响。物价水平及工资水平与审计定价间关系的实证检验研究显示:物价水平越高的地区,上市公司审计定价越高;工资水平越高的地区,上市公司审计定价越高。进一步的研究发现,物价水平和工资水平间的相互关系削弱了区域差异对审计定价的影响,工资水平与审计定价间的关系依赖于物价水平。