An estimate of aggregate supply response in South African agriculture

Agricultural supply has traditionally been assumed to be relatively inelastic. Time series estimates have generally supported this hypothesis. Estimates based on cross‐sectional observations have generally yielded higher elasticities. It has been argued that cross‐sectional analyses are more appropriate than time series analyses for estimating long‐run elasticities. A cross‐sectional analysis was done on South African data. Quantity supplied was shown to be a function of output/input price ratios, land quality, average rainfall and time. The long‐run supply elasticity appears to be approximately 0,92. This has important implications for agricultural price policy. Policies based on the assumption of very low supply elasticities are likely to distort markets and production.     

How responsive is Chinese export supply to market signals?

This paper studies the behavior of Chinese exporters from the mid-1980s through 2001. Extensive quarterly data on values and quantities of major export products have been taken from Chinese customs statistics to form a panel data set and aggregate export unit price and volume indices. The data are used to estimate export supply price elasticities, including by industry groups. The overall results indicate an increase in the responsiveness of export supply to market price signals in more recent periods following reforms.     

The Corn Laws and English wheat prices, 1815–1846

The British Corn Laws of the nineteenth century are the classic example of a trade barrier. This paper evaluates their importance to English society by analyzing the effects of the Corn Laws on wheat markets. Import supply elasticities are estimated for all of England's major grain supply markets, using data on prices, quantities, and freight costs from each country. A partial equilibrium trade arbitrage model is then constructed. In the absence of the Corn Laws, prices would have been 9 percent lower and consumption about 1.5 percent greater. The Corn Laws were, therefore, of great social and economic importance as England moved into the period of industrialization.     

Trade elasticities in transition countries

Trade elasticities play a crucial role in translating economic analysis of external adjustment issues into macroeconomic policy. Trade demand elasticities allow policy makers to draw important conclusions about exchange rate misalignments or trade balance changes. This paper endeavors to bring transition countries, namely those from Central and Eastern Europe and the Commonwealth of Independent States, into the universe of estimated price and activity elasticities of trade volumes. The estimated results imply that the traditional ‘Marshall-Lerner’ condition is not satisfied for transition countries. The estimated price elasticities of export and import demands perform fairly well in predicting out-of-sample changes in trade balance ratios for a broad set of transition countries. In the long run, however, exports and imports are mainly driven by income changes.     

Prices and Economic Change in Medieval Sweden

Abstract

The article explores relative price changes in medieval Sweden, with a focus on grain, beer, salt, oxen, butter, wax and iron. Supplementary data are provided on copper and hops. Most of these goods declined substantially in price relative to grain. The magnitude of the relative price shifts reflects technological and organisational change. Price cuts tended to be larger for goods that possessed a high knowledge content, such as iron, copper, and beer, or were involved in a more efficiently organised international trade, such as salt. This parallels the notion that north-western Europe, at least from the sixteenth century, developed a distinctive pattern of relative prices, with low prices of industrial goods and high prices of food. It is striking that Sweden, a peripheral economy of medieval Europe, exhibits these traits even before the sixteenth century. The great expansion of the European economy of the early modern period appears as a continuation of the innovations of the late medieval era.     

Errors-in-variables, supply side effects, and price elasticities in foreign trade

Errors-in-Variables, Supply Side Effects, and Price Elasticities in Foreign Trade.—Previous estimates of price elasticities in foreign trade are likely to be biased upward due to errors-in-variables, omission of supply side influences, aggregation, bad measurement of price competitiveness, and misspecification of the estimation equations. This paper incorporates the supply side into the traditional demand for export equation and uses a panel data approach for OECD manufacturing to provide unbiased estimates of price elasticities. The estimates indicate that the sum of the absolute import and export price elasticities is close to one and that currency depreciations are likely to adversely affect trade balances in the long run due to supply side influences. JEL no. E3, F1, F4     

An empirical examination of the disaggregated import demand of Korea—the case of information technology products

This article presents an empirical analysis of the import demand for certain information technology products in Korea. These products have been recognized as essential for further economic growth in Korea, as the Korean government aims to transform the economy into one based on information technology. The unrestricted error correction model is used to derive the long run price and income elasticities of import demand, considering the small sample size. The price elasticities are revealed to be quite high in all cases, implying that lowering of the tariff rates would increase the import of those products substantially.     

Food Demand Characteristics in Uganda: Estimation and Policy Relevance

Uganda was highly successful in reducing poverty over the past two decades but made little progress towards household food security. This underlines the need for designing food security interventions customised for household‐specific needs and behaviours. This study estimates Ugandan household demand behaviour with a focus on food consumption paying particular attention to household‐specific characteristics. The results show that preferences to increase calorie‐dense staple consumption, likely associated with food energy deficiency, extend far beyond the percentage of rural Ugandans officially deemed poor. Price elasticities indicate that poor rural households are largely well positioned to compensate staple price increases by substitution as long as they are not already concentrated on the cheapest foods. This flexibility applies less to urban households. The estimated demand elasticities generally vary widely between rural and urban households and depend on expenditure levels. Household‐specific characteristics have significant, sometimes pronounced, influences on demand, as do seasons and regions. The results reflect highly differentiated demand behaviour, which can be utilised to improve the design and evaluation of food security interventions.     

The price and income elasticities of the top clothing exporters: Evidence from a panel data analysis

This paper studies the main export function features of twelve top clothing exporters (China, Hong Kong, France, Germany, India, Indonesia, Italy, Netherlands, Spain, Turkey, UK and USA) in the period between 1992 and 2011. Price and income elasticities are estimated for each economy using a panel data approach, after controlling for nonstationarity, cointegration and Granger causality. Rolling regressions are also performed, and show the existence of some elasticities instability over time, fundamentally related to the profound economic and institutional changes affecting the clothing trade in the period under consideration. The analysis suggests that most advanced economies, including Hong Kong, changed their position in the global value chain towards an “organizational” role. China confirms its leadership in clothing exports although its rising price elasticity sounds a warning with regard to future prospects.     

DETERMINANTS OF DEMAND FOR FIJI'S EXPORTS: AN EMPIRICAL INVESTIGATION

Fiji is no exceptin to the rule that exports are an important source of growth and development. In this light, it is important to know the determinants of exports. However, there is no empirical study on Fiji's export demand. This paper uses the modern econometric techniques—in particular, the autoregressive distributed lag approach to cointegration—to investigate whether the standard export demand variables, viz., trading partner income, export price, and competitor price, have a long‐run cointegration relationship with Fiji's real exports for the period 1970 to 1999. In addition, the long‐run results are also estimated by using the dynamic ordinary least squares and the fully modified ordinary least squares. The empirical results indicate the existence of a cointegration relationship among the variables. The long‐run foreign income, own‐price, and cross‐price elasticities are found to be 0.7 to 0.8, −1.3 to −1.5, and 2.1 to 2.2, respectively.     

Income and Price Elasticities of Demand in South Africa: An Application of the Linear Expenditure System

This paper investigates the expenditure patterns of South African households using detailed cross‐sectional expenditure and price data that varies across region and time. Linear expenditure system parameter estimates are used to calculate income and price elasticities for a number of product categories at different points of the income distribution. We find substantial variation in the price and income elasticities of demand for items across the income distribution, with the bottom quartile being extremely sensitive to increases in the price of food and clothing items, and the top quartile being as sensitive as households in developed countries.     

Supply and demand macro-econometric model of a small economy: evidence from Namibia

This study develops a macro-econometric model for the Namibian economy. This macro-econometric model estimates both the demand and supply sides of the Namibian economy. This model incorporates the price sector, in order to serve as a link between the supply and demand sides of the economy. The model consists of behavioural equations, linked by identities and definitions. These behavioural equations were estimated and simulated individually. They were then combined together to form a full macro-econometric model of the Namibian economy. The full macro-econometric model was closed using two models. The first model activates the supply side and marginalises the demand side. The second model is demand side orientated, which activates the demand side and marginalises the supply side. The results indicate that the estimated values closely approximate the actual values. This macro-econometric model can be used to apply policy simulations, in order to determine appropriate economic policies for Namibia.     

Feeding the British: convergence and market efficiency in the nineteenth-century grain trade

This paper traces the evolution of the international market for wheat, from an emerging market structure after the repeal of the corn laws to a mature market characterized by efficient arbitrage after the introduction of the transatlantic telegraph and the growth of trade. Efficiency is documented using traditional price gap accounting as well as error correction modelling. Markets which traded directly with each other as well as markets which did not trade with each other were integrated. The traditional bilateral focus in market integration studies has been extended to a multivariate approach, which generates new insights into the pattern of diffusion of price shocks in the international economy. Shocks in the major importing nation, Britain, dominated in the emerging market phase, while shocks in the major exporting economy, the United States, dominated international price movements at the end of the nineteenth century.     

A dynamic demand analysis for electrical energy by class of consumer

Conclusion In the preceding discussion, the price responsiveness of consumers has been estimated. The results not only indicate consumer reaction to changes in price is significant, but also they should completely dispel any argument over the efficacy of the market mechanism to restore equilibrium between supply and demand. Note, however, that demand is relatively inelastic, implying that a large change in price is needed to induce a sufficient change in the quantity demanded for the restoration of equilibrium. If the problem is to curtail the sales of electricial energy, the solution is obvious. The author would like to thank Joseph R. Antos and J. Wilson Mixon of the Bureau of Labor Statistics for helpful comments. The views expressed are those of the author and do not reflect the policies of the Bureau of Labor Statistics or the views of other BLS staff members.     

The elasticity of substitution as a proxy measure of economic integration

This study examines how the accession of Greece to the European Union affected the Greek economy. Transcendental production functions of agriculture, industry, and service sectors of Greece, Germany, and France were estimated and tested for structural stability. Based on two estimated parameters of sectoral production functions and the corresponding data on capital-to-labor ratios, sectoral elasticities of substitution were constructed as vectors of values, varying with time. It was found that the elasticities of the traded sectors, industry, and manufacturing converged. The elasticities of substitution of the nontraded sector service and the traded, but protected, sector of agriculture diverged.     

New series for agricultural prices in London, 1770–1914

New annual series for the prices of major agricultural commodities sold in London markets between 1770 and 1914 are presented. These series are based on bimonthly observations drawn from newspaper market reports. The products covered are wheat, barley (grinding and malting), oats, potatoes, hay, butter, beef, mutton, and pork. Annual prices are calculated for both calendar and production years. The new series are compared to existing series.     

Tariff pass‐through in the middle products model

I use the middle products model of Sanyal and Jones to study the pass‐through of a tariff on the price of non‐traded final goods. I extend their analysis by comparing the short‐run effect of the tariff, when all factors are immobile, with the effects when labor is mobile between all sectors. It is shown that the short‐run pass‐through may vary from zero to a magnified effect on the price of the final product, depending on the elasticities of substitution in consumption and production. The relative magnitude of these elasticities determines whether the pass‐through with labor mobility is greater or less than the short‐run pass‐through.     

Will the Sarb always Succeed in Fighting Inflation with Contractionary Policy?

The conventional view is that a monetary policy shock has both supply‐side and demand‐side effects, at least in the short run. Barth and Ramey show that the supply‐side effect of a monetary policy shock may be greater than the demand‐side effect. We argue that it is crucial for monetary authorities to understand whether an increase in expected future inflation is due to supply shocks or demand shocks before applying contractionary policy to forestall inflation. We estimate a standard New Keynesian dynamic stochastic general equilibrium model with the cost channel of monetary policy for the South African economy to show that whether the South African Reserve Bank should apply contractionary policy to fight inflation depends critically on the nature of the disturbance. If an increase in expected future inflation is mainly due to supply shocks, the South African Reserve Bank should not apply contractionary policy to fight inflation, as this would lead to a persistent increase in inflation and a greater loss in output. Our estimation results also show that with a moderate level of cost‐channel effect and nominal rigidities, a New Keynesian dynamic stochastic general equilibrium model with the cost channel of monetary policy is able to mimic the price puzzle produced by an estimated vector autoregressive model.     

An Empirical Analysis of the Demand for Imports in Three CARICOM Member Countries: An Application of the Bounds Test for Cointegration

This paper provides fresh estimates of income and price elasticities of import demand in Guyana, Jamaica, and Trinidad and Tobago using a bounds test for cointegration. In addition, the paper also provides estimates of the consumption, investment, and exports elasticities of import demand. These latter elasticities were all found to be positive and statistically significant with values ranging from 0.16 to 0.55 in the long-run.     

Estimating Firm Behavior under Rationing: a Panel Data Study of the Chinese Manufacturing Industry

The purpose of this paper is to investigate the impacts of rationing on firm behavior. A virtual price approach is adopted to derive the rationed elasticities of variable input demands and output supply under a translog profit function. To illustrate the difference between the rationed and unrationed elasticities, we conduct an analysis using a firm-level annual survey data of China over the period 1985–88. Our estimation results indicate that the values of most elasticities would have been affected significantly if the government had imposed rationing on material inputs. The behavior of Chinese firms would have been seriously distorted in a complicated way. The firms would have over-responded to market signals in making some of their input or output decisions and, at the same time, might have under-reacted, or would have not changed their reaction, in making the other input or output decisions, under a rationing regime.