the internationalisation of stock markets and the abolition of u k exchange control this paper aims to assess the impact of the abolition of u k exchange control on the degre of integration of u k and overseas stock markets using cointegration techniques we find that although there is no significant increase in the correlation of short run stock market returns for the united kingdom and certain overseas markets post 1979 there does appear to be a marked increase in the degree to which these markets move together in the long run after this date there appears to be no long run gain from diversification since cointegration of two variables implies that at least one of them can be used to help forecast the other our findings also imply the inefficiency of a number of stock markets

why voluntary export restraints are voluntary the paper presents an analysis of the effect upon an oligopolistic equilibrium of introducing a voluntary export restraint ver upon an importing firm a ver set at the free trade level of imports is shown to raise the profits of all firms within the industry the result follows as the imposition of a ver upon a free trade nash price competition forces the domestic firm to become an industry price leader the ver raises industry prices by facilitating collusion and lowers consumer welfare pourquoi les restrictions volontaires d 1 exportation sont volontaires ce memoire presente une analyse des effets de l introduction de restrictions volontaires a l exportation rve sur une entreprise qui importe dans un monde en equilibre oligopolistique on montre que l introduction de rve approximant le niveau des importations en regime de libre echange devrait augmenter les profits de toutes les entreprises dans l industrie cela decoule du fait que l imposition de rve sur un univers de concurrence par les prix a la nash en regime de libre echange force l entreprise domestique a devenir le leader en prix l introduction de rve augmente le niveau des prix de l industrie en facilitant la collusion et de ce fait reduit le niveau de bien etre des consomrnateurs

food preferences and nutrition in rural bangladesh t he dietary choice of households near subsistence levels of nutrient intake is one of obvious policy importance in many countries such as bangladesh national goals are set in terms of nutritional intake and there is heavy intervention in the markets for foods however little is known about the manner in which food preferences vary with food expenditure and nutrient intake the design of efficient programs to aid nutritionally deficient households in attaining minimal levels of nutrient intake requires information on all ownand cross price elasticities for both target and non target groups the net effect of a food price subsidy on the consumption of food nutrients cannot be predicted without knowledge of the complete elasticity matrix results presented below demonstrate that substitution effects can be so strong that the subsidization of certain foods quite often reduces nutrient consumption in this study demand equations for nine foods which allow for extremely flexible consumer price response are estimated from the individual budgets of 5 750 rural bangladeshi households estimation at the household level is preferred because it more readily permits the incorporation of household composition variables into the demand analysis such as household size occupation and employment status that are typically lost in aggregation there is also a greater range and variation in expenditure levels than found in grouped data this is of particular importance in the study of nutritional well being as it is the poorest households which are of special interest moreover the household sample provides sufficient degrees of freedom to estimate a simple varying parameter model which requires the estimation of 270 parameters previous econometric analysis of income class specific dietary choice has been limited and not altogether satisfactory pinstrup anderson de londono and hoover 1976 estimated complete sets of price elasticities for different income strata using frisch s scheme in order to study the impact of changes in relative prices on nutrient consumption their results are suspect because of the assumption of want independence necessary for this methodology to be valid alderman and timmer 1980 who were also concerned with studying the relationship between food price policy and nutrient intake by income classes econometrically estimated separate price coefficients for each income group by including slope dummy variables in their demand equations for rice and cassava in indonesia the inclusion of these dummy variables revealed surprisingly large differences in compensated price response across income groups although their results support the notion that poorer households respond differently to prices than the rich the limitations of their data constrained them to consider only two foods and to specify changes in price response which are discontinuous with respect to income i the formulation and estimation of the food demand equations is discussed in section ii below section iii presents the results of the estimation and discusses the nutritional implications of movements in relative food prices and other exogenous variables section iv summarizes our findings

changes in the comovement of european equity markets this paper investigates the impact that the removal of exchange controls within major european economies has had on the interdependence of european equity markets for five years prior to the removal of exchange controls and five years following their removal we use impulse responses and variance decompositions from vector autoregressions to illustrate that european equity markets have become substantially more integrated after the removal of exchange controls we undertake further tests that demonstrate that even if we allow for parallel macroeconomic harmonization the removal of exchange controls has been a major cause of increased equity market integration within europe

a methodology for measuring food poverty applied to kenya abstract this paper proposes a new way of establishing a food poverty line taking into account regional food preferences and prices it uses this poverty line to derive a food poverty measure which satisfies the desirable fundamental properties of such measures and has the additional advantage of being additively decomposable the measurement of food poverty is further generalized to heterogeneous groups of households facing different sets of relative prices and exhibiting different food preferences finally the above methodology is applied to the empirical estimation of food poverty among kenyan smallholders and the results contrasted with those obtained by two other methods

strategic non intervention and the choice of trade policy for international oligopoly abstract this paper analyzes a game of strategic trade policy between governments who may choose among quantity controls subsidies and non intervention as policy instruments central to the analysis is our view of non intervention as a distinct policy choice we derive conditions under which non intervention is strictly preferred to the alternative instruments preferences between non intervention and the nash equilibrium subsidy confirm to a simple distance measure involving the stackelberg leadership subsidy the subsidy level zero or nash that is closest to the stackelberg subsidy being preferred

land contingent poverty alleviation schemes abstract target groups for rural poverty alleviation schemes in south asia and elsewhere have often been identified in terms of their landholding class with landless or near landless households being the intended beneficiaries this paper offers a quantitative approach to the analysis and design of land contingent poverty alleviation schemes an application to bangladesh suggests that when income is generally unobserved landholding class is a good instrument for targeting poverty relief in that it is strongly correlated with the informationally feasible allocations which minimize aggregate poverty for a given budget it is however far from being a perfect instrument even under otherwise ideal conditions the maximum feasible reduction in poverty which is attainable by relying solely on land based targeting is substantially less than that attainable with perfect income information indeed the poverty alleviation impact of domestically financed and revenue neutral transfers across 10 landholding classes in rural bangladesh could also be achieved without targeting by simply giving every household a lump sum payment equivalent to 10 of mean rural income political restrictions on tax powers or errors made in administration will further reduce the gains from land contingent targeting greater impact on poverty for a given budgetary cost will require more precise targeting within landholding classes

tariffs quality reversals and exit in vertically differentiated industries abstract in a vertically differentiated industry a domestic and a foreign firm first choose the quality of their goods and then compete in quantities or prices in the home market we investigate the cases in which a tariff is chosen before or after the firms quality decision these cases are referred to as the ex ante and the ex post game respectively optimal ex post tariffs are positive and ensure that the domestic firm always produces the high quality good the optimal ex ante tariff is prohibitive and welfare under domestic monopoly is lower than under ex post tariffs unless firms compete in prices and the domestic firm is high quality

trade and trade policy with imperfect competition the case of identical products and free entry abstract this paper analyses intra industry trade between economies containing an imperfectly competitive industry in which firms produce a homogeneous output production is subject to increasing returns to scale and there is free entry and exit of firms trade is shown to unambiguously increase welfare by reducing the degree of monopoly in each market and increasing firm size the effects of differences in technology and endowments on the pattern of trade and welfare are examined import tariffs are shown to raise welfare in the country employing the tariff and the welfare implications of various types of industry subsidy are examined

correlations in price changes and volatility across international stock markets the short run interdependence of prices and price volatility across three major international stock markets is studied daily opening and closing prices of major stock indexes for the tokyo london and new york stock markets are examined the analysis utilizes the autoregressive conditionally heteroskedastic arch family of statistical models to explore these pricing relationships evidence of price volatility spillovers from new york to tokyo london to tokyo and new york to london is observed but no price volatility spillover effects in other directions are found for the pre october 1987 period article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

trading systems in european stock exchanges current performance and policy options stock markets marco pagano and ailsa roell the deregulation of financial markets and the liberalization of international capital flows raises a number of challenging issues market participants and policy makers are treading largely uncharted territories this article offers some markers exploring the implications of economic principles and producing new evidence on european stock exchanges one vast set of issues concerns the design of market operations the article compares the merits both in theory and in practice of auctions versus market making of concentration versus fragmentation of trading of batch auctions versus continuous markets and of single versus dual capacity dealers policy conclusions are grounded on a detailed analysis of the experience accumulated on european and north american exchanges another theme runs through this article the implications for the relative competitiveness of european financial markets rapid changes have already occurred in the late 1980s while much wholesale trade has moved to london continental exchanges have grown at an accelerated pace we examine whether this is connected to innovations in trading systems and regulation the paper also attempts to foresee the geographical structure of europe s integrated stock markets at stake is the hierarchy of financial centres the potentially dangerous drift towards competitive deregulation and the scope for wholly computerized trading where market location becomes irrelevant

international transmission of stock market movements this paper investigates the international transmission mechanism of stock market movements by estimating a nine market vector autoregression var system using simulated responses of the estimated var system we i locate all the main channels of interactions among national stock markets and ii trace out the dynamic responses of one market to innovations in another generally speaking a substantial amount of multi lateral interaction is detected among national stock markets innovations in the u s are rapidly transmitted to other markets in a clearly recognizable fashion whereas no single foreign market can significantly explain the u s market movements also the dynamic response pattern is found to be generally consistent with the notion of informationally efficient international stock markets

up the average cost curve inefficient entry and the new protectionism abstract a two country model is developed in which each country produces one good with increasing returns the goods being perfect or imperfect substitutes with cournot nash behavior and free entry certain restrictive trade policies have effects opposite to their favorable effect under noentry assumptions import tariffs and export subsidies lead to inefficient entry that raises rather than decreases the average production cost of and price charge by the domestic industry with negative welfare consequences we argue that these predictions of our model are closely consistent with extensive canadian data on entry exit and firms responses to trade liberalization

tax competition in vertically differentiated markets with environmentally conscious consumers this paper analyses the effects of tax competition on environmental product quality pollution and welfare in a two country vertically differentiated international duopoly in which consumers are environmentally conscious the firm in each country chooses first the environmental quality of its product which reflects the emissions generated in the production process and then the price in equilibrium one country will be more polluted than the other because firms choose different levels of environmental quality of their products we find that a country s optimal commodity tax is higher if the domestic firm is the more polluting supplier furthermore non cooperative commodity tax rates are inefficiently high in equilibrium this is because in this framework with environmentally aware consumers commodity taxes affect the choice of firms regarding their emissions therefore a domestic tax reduction not only raises the profits of the foreign firm but also lowers its emission levels resulting in higher welfare for the other country we also analyse the optimal cooperative and non cooperative commodity and emission taxes with border tax adjustments with these two policy instruments available commodity taxes are higher

capital subsidies and countervailing duties in oligopolistic industries abstract under gatt countries are allowed to impose countervailing duties to offset foreign subsidies however gatt rules limit the amount of duty to the amount of the subsidy this paper examines a generalized model of imperfect competition with capital subsidies and shows the conditions under which a countervailing duty will offset the effect of the subsidy on exports also conditions are specified under which exports will increase despite the imposition of the maximum tariff under gatt in addition the paper considers whether profit shifting motives for a subsidy still exist even when this maximum duty is anticipated

anti dumping and countervailing duties under oligopoly abstract this paper constructs a conjectural variations model of international oligopoly in which the home country s optimal policy responses to the foreign government s subsidies and foreign firms dumping can be calculated some theoretical support is found for tariffs that countervail part of the foreign export subsidy the optimal fraction depends on the size of own and cross effects in demand and on the extent of market competition however no normative case is found for anti dumping duties

national treatment at the wto the roles of product and country heterogeneity this paper analyzes the world trade organization s wto s national treatment nt clause in a two country model where quality of goods and or market size are heterogenous across countries when market size is symmetric across countries a reciprocal nt agreement i benefits the high quality country ii hurts the low quality country and iii delivers higher aggregate world welfare however such an agreement can arise in equilibrium if the high quality country s market is relatively bigger and the quality gap between goods is small i e goods are sufficiently alike the qualitative nature of these results does not change when quality is endogenously determined

effects of irrigation induced technological change in bangladesh rice production this paper evaluates the welfare implications of the irrigation induced technological change in rice production based on the conceptual framework of hayami and herdt and using a modified formulation of the problem the analytical model used incorporates demand and supply shifts provides exact measures of changes in consumers and producers surpluses and examines the implications for distributive justice in terms of impacts on incidence and severity of poverty and inequality in income distribution the results of the analysis suggest that irrigation induced technological change would significantly promote distributive justice

quantity restrictions and endogenous quality choice abstract in a vertical product differentiation model under cournot competition both foreign and domestic firms respond by lowering their investment in long run quality for a quantity restriction at and in the neighborhood of the free trade import level average quality increases only when the low quality foreign firm faces a substantially restrictive quota voluntary export restraint the change in quality depends on whether the foreign firm is of high or low quality and upon the restrictiveness of the quota the imposition of quantity restrictions has important strategic effects on the long run choice of quality

international arbitrage pricing theory an empirical investigation in this paper we test the arbitrage pricing theory apt in an international setting inter battery factor analysis is used to estimate the international common factors and the chow test is used in testing the validity of the apt our inter battery factor analysis results show that the number of common factors between a pair of countries ranges from one to five and our cross sectional test results lead us to reject the joint hypothesis that the international capital market is integrated and that the apt is internationally valid our results however do not rule out the possibility that the apt holds locally or regionally in segmented capital markets finally the basic results of both the inter battery factor analysis and the cross sectional tests are largely invariant to the nume raire currency chosen numerous authors notably solnik 21 grauer litzenberger and stehle 11 and stulz 24 have derived various versions of the international asset pricing model iapm under alternative views of the structure of international capital markets however only a few serious attempts have been made to test various versions of the iapm these tests are largely inconclusive see solnik 20 and stehle 23 apart from the problem stressed by roll 16 of identifying the world market portfolio previous tests of the iapms suffer from the technical problem of aggregating assets of national investors using different numeraire currencies differences in the numeraire arise from differences in consumption baskets in an environment characterized by exchange rate uncertainty in a fruitful attempt to extend the arbitrage pricing theory apt of ross 18 to an international setting solnik 22 derives an international arbitrage pricing theory which is largely devoid of the aforementioned difficulties and thus more amenable to empirical testing 1 as shown by solnik testability of the apt in an

endogenous quality choice price vs quantity competition two versions of a vertical product differentiation model one with fixed and the other with variable costs of quality are analyzed to study how the hypotheses of price versus quantity competition affect equilibrium solutions product differentiation arises under all the scenarios considered contrasting previous findings of symmetric quality choices under cournot behavior however to relax harsher market competition firms differentiate more under bertrand than under cournot a simple welfare measure also indicates that the economy is better off when firms compete on prices with fixed costs of quality not only consumer but also producer surplus is higher under price competition copyright 1993 by blackwell publishing ltd

export subsidies and countervailing tariffs this paper analyses how retaliation affects the profit shifting argument for export subsidies at the first stage the foreign country sets its export subsidy and then at the second stage the domestic country sets its tariff and or production subsidy it is shown that if the domestic country pursues an optimal trade policy then it will always gain from a foreign export subsidy when the domestic country uses a tariff and a production subsidy the optimal foreign policy is an export subsidy but if the domestic country only uses a tariff then an export tax is usually the optimal policy

trade policy and quality leadership in transition economies trade policy and quality leadership in transition economies are analyzed in a duopoly model of trade and vertical product differentiation we first show that the incidence of trade liberalization is sensitive to whether firms in transition economies are producers of low or high quality second we find that neither free trade nor the absence of a domestic subsidy are optimal both a tariff and a subsidy increase price competition and while the former extracts foreign rents the latter results in quality upgrading third there exists a rationale for a government to commit to a socially optimal policy to induce quality leadership by the domestic firm when cost asymmetries are low finally we establish an equivalence result between the effects of long run exchange rate changes and those of trade policy on price competition but not on social welfare

import competition product quality reversal and welfare abstract we investigate product quality in an import competing country using the framework of vertical product differentiation comparison of three polices suggests that the quality based r d subsidy brings quality reversal leading to a win win win equilibrium in consumer surplus domestic profit and social welfare