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.     

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.     

Price and income elasticities: evidence from commodity trade between the U.S. and Egypt

Elasticity approach to balance of payments postulates that a country can enjoy an improvement in its trade balance in the long run if sum of import and export demand price elasticities exceed unity, a condition known as the Marshall-Lerner condition. Previous research tested this condition either using aggregate trade data between one country and rest of the world or between two countries and provided mixed results. They are all said to suffer from aggregation bias. To remove the bias, in this paper we concentrate on trade flows of two countries, i.e., the U.S. and Egypt and disaggregate their trade flows by commodity. The estimates reveal that the ML condition is met in 28 out of 36 industries that trade between the two countries.     

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.     

Novel indicators of the trade and welfare effects of agricultural distortions in OECD countries

Agricultural markets in OECD countries have long been highly distorted by government policies. Traditional weighted average aggregates of the price distortions involved, such as producer and consumer support estimates (PSEs and CSEs), can be poor indicators of the trade restrictiveness and economic welfare losses associated with them, especially if a country’s support estimates vary a lot across the product range. Certainly estimates of trade and welfare effects of price supports can be obtained from sectoral or economywide models using price elasticity estimates, but the results can be contentious if there is no consensus on what model specification and elasticity parameters to use. This paper shows that, if there is a willingness to accept simple assumptions about elasticities, it is possible to generate indicators of the welfare and trade restrictiveness of agricultural policies using no more than the price and quantity data needed to generate PSEs and CSEs. These new indexes thus provide an attractive supplement to the current policy monitoring regime developed by the OECD Secretariat.     

Innovations and manufacturing export performance in the OECD countries

This paper addresses two puzzles in international trade, namelywhy traditional estimates of income elasticities of exportsare implausibly high and why export growth varies much moremarkedly across countries than can be explained by changes inprice competitiveness and variations in income growth in exportmarkets. Using data for 18 OECD countries it is shown that marketintegration and the level of technology and competitivenesscan, to some extent, explain these two puzzles.     

How much have been the export products changed from homogeneous to differentiated? Evidence from China, Japan, and Korea

Many international trade theories and evidence suggest that trade in homogeneous and differentiated goods is different, and trade performance depends significantly on the extent of product differentiation. First this paper classifies the three countries' export products using Rauch's [Rauch, J. (1999). Networks versus markets in international trade. Journal of International Economics, 48, 7–35] classification scheme. This paper suggests a sophisticated technique to obtain the extent of product differentiation in a country's export, implied by Dixit and Stiglitz [Dixit, A., & Stiglitz, J. (1977). Monopolistic competition and optimum product variety. The American Economic Review, 67, 297–308] model in which the smaller is the elasticity of substitution between varieties the greater is the extent of product differentiation. This is an attempt to identify the extent of product differentiation in each country's export basket by estimates of the elasticity of substitution. The estimated elasticities of substitution vary across countries. The most interesting empirical finding is that the China's export structure has been rapidly shaped into differentiated products. However the extent of product differentiation in Japan and Korea's exports has relatively less varied.     

China＇s Changing Trade Elasticities

China ＇s sectoral trade composition, product quality mix, and the import content of processing exports have all changed substantially during the past decade. This has rendered trade elasticities estimated using aggregate data highly unstable, with more recent data pointing to significantly higher demand and price elasticities. Sectoral differences in these parameters are also very wide. All this suggests greater caution should be exercised when using historical data to simulate the response of China＇s economy to external shocks and exchange rate changes. Analyses based on models with estimated coefficients largely representative of China in the 1980s and 1990s are likely to turn out to be wrong, perhaps even dramatically.     

我国船舶进出口价格弹性分析

本文基于经济学中的弹性理论,测算了我国船舶产品的出口、进口价格弹性,充分研究价格对我国船舶贸易的影响程度。得出结论:我国船舶进口价格显著高于出口价格,出口价格弹性的绝对值较大,且波动明显,进口价格弹性的绝对值较小,波动不明显,并深入研究了造成船舶进出口价格弹性背离的原因,在此基础上,提出相应对策。     

加工贸易与一般贸易进出口价格的汇率传递估计与比较分析

本文从不同的贸易方式角度对人民币升值的进出口价格传递效应进行了理论建模和实证分析。文章首先依据利润最大化的厂商目标对进出口厂商的定价行为进行模型设定,其次对两种不同贸易方式中进出口价格的汇率传递进行估计和实证检验,最后得出分析结论:人民币升值对我国一般贸易价格的影响较小且不显著,而对我国加工贸易价格的影响较大且显著。     

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.     

At the roots of China's striking performance in textile exports: A comparison with its main Asian competitors

This paper analyzes the determinants of China's striking performance in textile exports in the time period 2001–2016. We integrate the analysis by Lall and Albaladejo (World Development, 2004), based only on China and its main Asian competitors' market share dynamics, by estimating an extended version of a traditional export function, derived from the imperfect substitute model, including a proxy of non-price competitiveness. The key long-run elasticities for each Asian exporter are thus computed and discussed in a panel-data framework, and the different export performances are examined taking into account the interaction between the estimated parameters and the growth rates of relative prices, foreign demand and product quality. Lastly, we decompose the textile export growth differences between China and its rivals into the three main channels of trade competition, i.e. price, quantity and quality. Our findings show that China is crowding out most of its rivals with a competitive strategy based on a mix of low and decreasing relative prices and non-price policies aiming at stimulating export volumes. However, certain weaknesses in the Chinese trade prospects emerge when quality improvement is considered.     

Reorganization of Intra‐ASEAN 5 Trade Flows: The ‘China Factor’*

There are claims that China's influence on ASEAN is direct in that she has encouraged more exports to flow into her huge markets and changed trade flows among member countries. Demand and supply are thus deemed to have become more China‐centered. This study therefore explores the plausibility of China as a ‘factor’ that influences bilateral intra‐ASEAN 5 trade flows through demand (exporting country) and supply (importing country). The results imply that China's integration in the region increases the size of the key ASEAN member economies export market. There is also no indication that import sourcing from China by ASEAN 5 countries reduces export expansion within the latter. The results accord with the fact that although China has become an important export destination and an import source for individual ASEAN 5 countries, this has not reduced intra‐ASEAN 5 trade.     

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.     

De gevolgen van de directe prijsbeheersing voor de internationale handel

Summary This paper contains a theoretical analysis of how a maximum price being put on homogeneous commodities affects international trade if rates of exchange are fixed. The consequences of a calculation scheme for fixing prices of differentiated products are also investigated.A maximum price that is lower than the import price is an impediment to import. This leads to oscillations of the import price if demand in the importing country is sufficiently high. The maximum price has no influence if it is higher than the import price. A maximum price that is equal to the export price (which is independent of the supply of the exporting country) retards the decline of export that would occur in consequence of a rise in home demand or a rise in costs of production. As soon as the average revenue per unit of product exported exceeds the maximum price, suppliers will try to export as much as possible. Importation of substitutes is stimulated indirectly and exportation of substitutes is discouraged, whereas the opposite effects occur with respect to complementary goods, materials used in the production process, and goods for the production of which the same materials and factors of production are used.If demand rises, a calculation scheme used for price control will reduce imports and stimulate exports. The calculation scheme reacts only on rises in costs of production that are not recognized officially by the government: imports will be smaller, and exports higher, than in the case of a free determination of prices. Calculation schemes check the importation of substitutes and stimulate their exportation, whereas the opposite effects may occur with respect to complementary goods, or due to changes in the production.In case of a general control of prices when inflation prevails, the whole set of price effects will affect the balance of payments. However, the final result will be uncertain, since some price effects tend to enhance the surplus of the balance of payments whereas others tend to reduce it. At the same time, income effects may affect the balance of payments in the adverse sense.National price control impedes the optimum allocation of resources in an economic community. This is due to the fact that it distorts trade.     

China’s exports in a protectionist world

Tariffs, currency wars, and protectionism pose risks for Chinese firms. In theory tariff increases and exchange rate appreciations exert equivalent effects on export volumes. This paper estimates tariff and exchange rate elasticities for China’s exports. The results indicate that, while exchange rates matter, tariffs increases deter exports almost three times as much as equivalent exchange rate appreciations do. The results also indicate that China’s flagship industries such as electronics and machinery are exposed to tariff increases and exchange rate appreciations. The paper then considers how China can promote freer trade to mitigate risks and reduce uncertainty.     

Prices and production: agricultural supply response in fourteenth‐century England

This article challenges the growing consensus in the literature that medieval manorial managers were price responsive in their production decisions. Using prices of and acreages planted with wheat, barley, and oats on manors held by the bishop of Winchester from 1325 to 1370, price elasticities of supply are estimated for each grain in aggregate and on each particular manor. Aggregate price elasticities of supply for wheat, barley, and oats were rarely statistically significant and when significant were very low compared with elasticities estimated for developing and developed countries in the nineteenth and twentieth centuries. The low levels of agricultural supply response in fourteenth‐century England suggest that commercialization was not as dominant in the medieval economy as has been argued. Thus, structural changes in the economy, such as the leasing of demesnes, the growth of wage labour, and the end of villeinage, may have been more important than price fluctuations in driving long‐run economic change after the Black Death. Likewise, a shift from low price responsiveness to higher price responsiveness could have been an important part of the capitalist transformation of agriculture in the early modern period.     

Doomed to Deficits? Aggregate U.S. Trade Flows Re-Examined

This paper examines the stability of import and export demand functions for the United States over the 1975q1–2001q2 period. Using the Johansen maximum likelihood approach, an export demand function is readily identified. In contrast, there appears to be a structural break in the import demand function in 1995; specifications incorporating this break pass tests for cointegration, although the price elasticity is not statistically significant. Only when excluding computers and parts from the import series is a stable import demand function detected. The resulting point estimates confirm the persistence of the income asymmetry first noted by Houthakker and Magee, although in a slightly diminished form. One policy implication of these findings is that dollar depreciation—unaccompanied by a realignment of growth trends—is insufficient to substantially reduce the U.S. trade deficit. JEL no. F31, F41     

Structural change in the Russian far east: The implications for trade and factor markets

This study compares actual directions of structural adjustment in the Russian Far East since the collapse of the former Soviet Union with estimated directions of adjustment that would be predicted to follow an opening of the region to the world market. How would moving to world prices affect the competitiveness of individual sectors of the Russian Far East? This author estimates the impact of changing terms of trade by revaluing a 1987 input-output table for the Russian Far East by price relatives between internal Soviet prices and world prices estimated by David Tarr [1992]. These estimates measure apparent competitiveness of each sector at world prices and identify four sectors of the Russian Far East—food processing, forest products, light industry, and the chemical industry—as negative value added sectors at world prices. However, actual short-run directions of adjustment in 1992–94 are only partly consistent with the directions predicted in the model. Measured gains from trade are strong on the import side but not on the export side.     

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.