COMPTABILITE NATIONALE A PRIX CONSTANTS ET A PRODUCTIVITE CONSTANTE

The problem of national accounting “at constant prices” is in fact a problem of comparability of time series, as changes in the price structure preclude any direct comparison of economic flows. If such accounts are established they will make it possible directly to compare the same flow at two different times in the economy as a whole, and this without leaving the influence of other flows out of account. This makes it possible both to synthesize and to undertake analytical comparisons. The accounts could then be used for the study of time series, for projections or for structural studies (e.g. the mechanisms underlying the changing pattern of income distrubution). The first part of this report sets out to study the main problems of compiling accounts at constant prices and to examine what conventions should be adopted. The second part of the report considers how productivity gains can be explicitly shown in the national accounts. The proposed study plan restores the symmetry between price and productivity. As in the accounts at constant prices, gap variables are introduced to measure productivity gains. These variables can be interpreted in terms of surplus; the concept of surplus used here, however, is not the one adopted for the accounts in constant prices, but its dual. Setting up an accounting system “at constant productivity” therefore makes it possible to complete the information provided by an accounting system “at constant prices.” These two systems can of course be integrated: this leads to the introduction of the concept of an accounting system “at constant prices and constant productivity.” Such an accounting system makes it possible to show, in the same accounting framework, the respective contributions of price changes and improved productivity to the gains realised by the different economic agents. It therefore gives a complete picture of “transfers” between the agents. At the same time, the data on price and productivity can be integrated with each other.     

Partial inflation indexation and long-run inflation targeting in a growing economy: A comparison of Calvo and Rotemberg pricing models

The observed 2% long run inflation target in most developed industrial nations is in variance with the zero or negative optimal inflation rates predicted by prominent monetary theories. Using a calibrated simple New-Keynesian model with endogenous growth and nominal rigidity, we compare two price setting environments of Calvo (1983) and Rotemberg (1982). In our growth model, the steady state welfare maximizing inflation takes into account the growth effect as well as the price distortionary effects of inflation. The long-run welfare maximizing trend inflation could be positive in economies with nominal rigidity in the form of partial inflation indexation and price stickiness. A higher degree of inflation indexation lowers the steady state price distortion in the Calvo model and steady state price adjustment cost in Rotemberg model and raises the long run optimal inflation. Since the productive inefficiency caused by partial inflation indexation is higher in Calvo economy compared to Rotemberg, the long run optimal trend inflation is higher in Rotemberg than in Calvo. In both models, a two percent long run inflation target is attainable for a reasonable degree of inflation indexation.     

Asymmetric impact of relative price shocks in presence of trend inflation

This study examines whether skewness of cross-sectional distribution of relative price shocks has asymmetric impact on aggregate inflation. The empirical evidence from major economies suggests that the positively skewed shocks have different impact from that of negatively skewed shocks on aggregate inflation. In particular, the empirical results indicate that this asymmetry in the impact of relative price shocks mainly depends on the nature of trend that inflation exhibits for a given period. The crucial inference that emerges from the empirical findings is that the traditional approach of using a simple linear regression model, to examine the relationship between inflation and skewness in presence of trend inflation, is not appropriate as it may lead to misleading conclusions.     

Relative Prices and Inflation Stabilization

When price adjustment is sluggish, inflation is costly in terms of welfare because it distorts various kinds of relative prices. Stabilizing aggregate price inflation does not necessarily minimize these costs, but stabilizing a well‐designed core inflation minimizes the cost of relative price fluctuations and, thus, the cost of inflation.     

Aggregate demand, conflict and capacity in the inflationary process

This paper focuses on an alternative perspective on inflationto that of the non-accelerating inflation rate of unemployment(NAIRU). It indicates that there are no automatic forces leadingto a level of aggregate demand consistent with constant inflation.Inflationary pressures arise from conflict over income shares,and from cost elements, with the price of raw materials, especiallyoil, being the most important. There are supply-side factorsimpinging on the inflationary process, which arise from thelevel of productive capacity (relative to aggregate demand).The supply-side constraints are viewed as arising from capacityconstraints, rather than from the operation of the labour market.     

The (Q,S,s) pricing rule: a quantitative analysis

Are nominal prices sticky because menu costs prevent sellers from continuously adjusting their prices to keep up with inflation or because search frictions make sellers indifferent to any real price over some non-degenerate interval? The paper answers the question by developing and calibrating a model in which both search frictions and menu costs may generate price stickiness and sellers are subject to idiosyncratic shocks. The equilibrium of the calibrated model is such that sellers follow a (Q,S,s) pricing rule: each seller lets inflation erode the effective real value of the nominal prices until it reaches some point s and then pays the menu cost and sets a new nominal price with an effective real value drawn from a distribution with support [S, Q], with s < S < Q. Idiosyncratic shocks short-circuit the repricing cycle and may lead to negative price changes. The calibrated model reproduces closely the properties of the empirical price and price-change distributions. The calibrated model implies that search frictions are the main source of nominal price stickiness.     

New Keynesian Versus New Classical Theories of Aggregate Supply: Evidence from the Oecd Countries

Using annual and quarterly data for the OECD countries this paper tests four theories of aggregate supply, namely the sticky wage, the sticky price, the worker misperception and the producer misinformation models. The empirical estimates suggest that the short run aggregate supply curve is positively sloped as a result of price and wage stickiness. Furthermore, the slope of the aggregate supply curve is found to be a positive function of the rate of inflation which is consistent with the sticky price model.     

The Well-Being Cost of Inflation Inequalities

In terms of well-being, how costly is inflation? To answer this question, empirical evaluations have typically studied average inflation rates at the national level, thus disregarding the role of inflation inequalities within a country. In this article, we relax the assumptions that heterogeneous consumers face homogeneous inflation rates, and study the correlation between price changes and self-reported satisfaction with living standards. We use newly available data from France and adopt two approaches. First, we focus on individually perceived inflation and use the internationally harmonized Opinion Price Index as a proxy for experienced inflation. Variations in perceived inflation help predict well-being differences among consumers, even when controlling for relevant sociodemographic factors, personality traits, and common method variance. We estimate their marginal impact to be higher than equivalent variations in nominal income. Second, we compare groups of consumers over time and find that changes in the price of a good disproportionately affect the relative well-being of those who consume it. The study shows that the well-being cost of the inflation crisis would be underestimated if looking at aggregate figures only.     

The Relationship Between Macroeconomic Variables and Relative Price Variability in Greek Agriculture

The purpose of this paper is to present a measure of relative price variability (RPV) among 53 agricultural products and to explore the relationships between RPV, aggregate inflation rate, and changes in economic activity for the period 1962–1997. We also estimate the effects of expected and unexpected components of inflation on price variability. The results show that changes in inflation rate and economic activity have a strong positive effect on RPV, in addition, expected inflation is found to be an important determinant for explaining price variability.     

Relative importance of sectoral and aggregate sources of price changes

This paper estimates a dynamic common factor model to assess relative importance of the aggregate and the sector-specific factors that determine changes in the prices of individual products. It also examines how aggregate price changes are affected by these factors. Two different specifications of the model are estimated: the baseline model with one aggregate factor, and a second specification with two aggregate factors. In the one-actor model, the aggregate factor contributes little to the movements of changes in prices, mostly of nondurable goods whereas it seems to have important contributions to the movements of changes in prices of commodity groups mainly used as intermediate or capital goods. In the specification with two aggregate factors, the additional factor has significant effects on changes in prices of ‘farm products’ and ‘processed foods and feeds’ only. Forecast-error variance decompositions of both aggregate and disaggregate price changes suggest that sectoral factors account for most of the variability at short horizons while the contributions of the aggregate factors increase as the time horizon lengthens. The results also show that sectoral factors are not only important for relative price changes but also have significant impact on aggregate inflation. The estimated common factors have statistically significant correlations with money growth and changes in the unemployment rate.     

PRICES AND PRICE ANALYSIS IN THE FRAMEWORK OF THE NATIONAL ACCOUNTS

The paper discusses the role of prices in the framework of the new System of National Accounts (SNA) in terms of three major uses: (1) deflation, (2) price indicators, and (3) price analysis. Following a brief review of the price and quantity measures required by the new SNA with its emphasis on deflation of commodity flows and input-output accounts, in addition to the more conventional deflation of final demand categories, the paper discusses some of the conceptual, methodological and data problems involved in implementing the various uses of prices in the new SNA. Implementing the use of prices as deflators depends, in part, on the concept of output selected (national versus domestic; gross versus net), and which of six concepts of valuation, ranging from purchasers'value to true factor cost, is used. Some of the difficulties in deflating nonmarket flows (e.g., interplant transfers) and industry value added, based on the double deflation method, are discussed. In concept price deflators, which have shifting weights, cannot be used as price indicators, which should have fixed weights. In practice, this is often disregarded and the deflators are used as price indicators. The paper support the SNA recommendation for the development of price indexes with fixed weights to be used as price indicators, in addition to the implicit price deflators. Research in the United States indicates that differences in weights can result in different price measures for various subperiods, components of demand and sector output. Periodic revisions in weights to provide more current fixed weights for price and quantity indexes in each subperiod may minimize the problem but it introduces a new problem—lack of comparability with the constant price tables in the SNA which have fixed weights for the entire period. The new SNA provides a comprehensive and integrated framework for price analysis including the analysis of the structure of aggregate price changes, the industrial origin of final demand prices, and the impact of price change in one sector of the economy on the rest of the economy. Some major gaps which need to be overcome in order to implement the use of the new SNA for price analysis include the development of industry capital stock estimates, separate estimates of proprietors’income, reconciliation of value added and distribution share estimates, and the development of a wide variety of information to supplement the conventional input-output tables in the SNA. Implementing the various objectives of price measures within the framework of the accounts will require a number of improvements in existing price measures and expanding the scope of coverage. “List” prices should be superseded by “transactions” prices and better techniques and data need to be developed to provide for quality adjustment of prices. Coverage will need to be expanded to include services, freight rates, trade margins, government expenditures, and also fill in gaps for many manufactured products. Finally, where possible, use of unit values as price indexes or deflators, e.g., imports and exports, should be replaced by direct price measures.     

Inflation and the Exchange Rate: The Role of Aggregate Demand Elasticity

This paper examines the effect of aggregate demand elasticity on the exchange rate when inflation occurs. We discover that both the source of the inflation, whether demand-pull or cost-push, and the elasticity of aggregate demand with respect to the price level, are of consequence for the exchange rate. We obtain two primary conclusions. First, the effect on the exchange rate of cost push inflation is ambiguous and is partially determined by the price level elasticity of aggregate demand. In particular, and assuming that the two examined countries have equivalent aggregate supply elasticities, we conclude that the nation with the less elastic aggregate demand function will see its currency appreciate relative to the other. Second, demand-pull inflation results in an unambiguous increase in the exchange rate but the size of that increase is partially a function of aggregate demand elasticity. Assuming again that two countries have equivalent aggregate supply elasticities, that country with the more elastic aggregate demand will experience currency appreciation.     

Anatomy of canadian inflation: An analysis with CANDIDE model 2.0

The objective of this paper is to analyze the causes of inflation projected for Canada through out the 1980s, using CANDIDE Model 2.0 as reported in the 18th Annual Review base case. Our analysis suggests that, in the medium-run inflation is not only a monetary phenomenon but also caused by a host of other factors: external inflation, foreign interest rates, low productivity growth, labour market tightness, domestic energy pricing and indexation of wages to CPI, a measure of inflation that reflects both domestic and foreign price pressures. Our results indicate that the restrictive aggregate damand policies alone will not make a significant dent in inflation without incurring substantial loss in output and employment. Our analysis suggests that we might better fight inflation using a balanced mix of aggregate demand and supply management policies and incentive based income policies.     

Real Gross Domestic Product and the Terms of Trade

Since their inception in the early 1960s, constant price national accounts have contained a measurement inconsistency in the expenditure accounts which flows through to the production accounts. The inconsistency has the effect of excluding changes in the terms of trade (the ratio of export prices to import prices) from real gross domestic product, so that it is unequal to real gross domestic income, which includes them. In economies, such as those of Australia and Canada, that experience substantial changes in the terms of trade, a real gross domestic product excluding those effects becomes a misleading guide for macroeconomic analysis and policy.     

A New Keynesian SVAR model of the Australian economy

We estimate an SVAR model for the Australian economy based on an open economy New Keynesian model that accounts for the forward-looking behaviour exhibited by economic agents. Deep structural parameters are identified by placing exclusion restrictions on the VAR residuals and the covariance matrix. Dynamic responses show no price and exchange rate puzzles and indicate that the Reserve Bank of Australia (RBA) stabilises output fluctuations in the short run while maintaining a medium-run inflation target since 1984. Aggregate demand shocks are found to be driven by external demands. The RBA exercises caution in responding to aggregate supply shocks.     

Euro area,oil and global shocks: An empirical model-based analysis

We assess the impact of oil shocks on euro-area (EA) macroeconomic variables by estimating with Bayesian methods a two-country New Keynesian model of EA and rest of the world (RW). Oil price is determined according to supply and demand conditions in the world oil market. We obtain the following results. First, a 10% increase in the international price of oil generates an increase of about 0.1 annualized percentage points in EA consumer price inflation. Second, the same increase in the oil price generates a decrease in EA gross domestic product (GDP) of around 0.1% and a trade deficit, if it is due to negative oil supply or positive oil-specific demand shocks. Third, it generates a mild EA GDP increase and a trade surplus if due to a positive RW aggregate demand shock. Fourth, the increase in the oil price over the 2004–2008 period did not induce stagflationary effects on the EA economy because it was associated with positive RW aggregate demand shocks. The drop in RW aggregate demand contributes to explain the 2008 fall in oil prices, EA GDP and inflation.     

中国货币供给与通货膨胀的关联性研究

关于货币供给与通货膨胀的关联性,学者们还没有形成一致的看法.理论上,货币供给与通货膨胀具有一定的关联性.通货膨胀有需求拉动型和成本推动型,在通货膨胀的原因中有“货币因素”,也有“非货币因素”.实证检验表明:中国货币供应量与物价指数不存在长期的稳定均衡关系,但货币供应量是物价指数的格兰杰原因,反之则不然.事实上,中国通货膨胀或通货膨胀压力一方面是与货币供给有关,另一方面还与结构性因素有关.因此,要实现中国经济的低通胀运行:一是实行总量均衡和结构合理的货币供给模式;二是采取更有效的货币政策;三是推进经济结构调整,实现国际收支平衡;四是深化金融体系改革,增强中央银行货币控制能力;五是进行汇率机制改革;六是通过财政政策调整供需结构.     

Does wage-inflation targeting complement foreign exchange intervention? An evaluation of a multi-target,two-instrument monetary policy framework

We assess the inclusion of wage inflation as an intermediate target of an emerging central bank using a dynamic stochastic general equilibrium model with sticky wages and prices calibrated for the South Korean economy. The model includes wage inflation as an additional target jointly with domestic price inflation and the output gap in a Taylor- type interest rate rule operating with a sterilized foreign exchange (FX) intervention rule. Our results show a complementary relationship between wage inflation targeting and price inflation targeting. That is, by supplementing price inflation targeting with wage inflation targeting, welfare improves for cases with and without sterilized FX intervention. When intervention is in place, wage inflation targeting has the added advantage of reducing the volatilities of nominal exchange rate and foreign exchange reserves thereby promoting a more sustainable conduct of FX intervention.     

Equilibrium determinacy and inflation measures for interest rate rules

Empirical evidence suggests that goods are highly heterogeneous with respect to the degree of price rigidity. We develop a two-sector dynamic general equilibrium model to study the equilibrium determinacy properties of interest rate rules that respond to inflation measures differing in their degree of price rigidity. We find that rules responding to a headline measure, which puts some weight on the inflation of the sector with low price stickiness, are more prone to generate endogenous aggregate instability—in the form of fluctuations driven by self-fulfilling expectations and equilibria where fluctuations are unbounded—than rules that respond exclusively to a core measure, which includes only the inflation of the sector with high price stickiness. We discuss how our results depend on the elasticity of substitution across goods, the timing of the policy rule, and reacting to aggregate activity.