theoretical and empirical specifications issues in travel cost demand studies the ultimate objective of empirical travel cost demand studies is to obtain an estimate of the welfare derived from utilizing outdoor recreational resources thus it is apparent that travel cost demand equations must be linked to utility maximization deyak and smith freeman bockstael and mcconnell hanemann bockstael hanemann and strand we specify a model of utilitymaximizing recreation demand behavior which postulates that individuals choose the total number of days that they wish to spend at the recreation site this total number of recreation days is the product of the number of trips

evolution of the economics of agricultural policy agricultural economists helped develop farm programs to respond to the dire economic situation of the 1920s and 1930s some early authors appreciated that such policies created problems in markets for commodities and inputs over time our understanding of agricultural issues and policies has deepened through the application of improved models and tools of analysis to more extensive data we have developed better answers to old questions and have responded to changing policy instruments market contexts and policy concerns this article traces the evolution of our deepening economic understanding of the causes and consequences of agricultural policy

testing the efficient redistribution hypothesis an application to japanese beef policy we discuss and model the structure of the political economy of japanese beef markets and we apply bullock s statistical test of the efficient redistribution hypothesis to our model to study the pareto efficiency of japanese beef policy in 1990 and 1991 we found that under the hypothesis that our modeled political economy adequately reflects the true japanese beef political economy we could not reject at the 5 significance level that japanese beef policy was inefficient in 1990 and in 1991 however we could reject inefficiency in 1991 at a 7 level of significance

on the political economy of public good inputs in agriculture the paper analyzes two elements in explaining and prescribing the level of costreducing public good inputs in agriculture the distribution of political influence and the economic properties of markets the incidence of costs benefits of alternative costsharing arrangements between taxpayers and producers is compared to the social optimal and competitive outcomes although one group could lose we focus only on situations of a pareto improvement the model predicts why some sectors have relatively more public versus private research funding and why the degree of underinvestment varies across sectors the observed underinvestment in agriculture may be due to the political power of farmers inelastic demand and highly productive public good inputs

contributions of public and private science and technology to u s agricultural productivity the impact of public and private research to agricultural productivity in the us between 1950 and 1982 were assessed using an econometric model analysis of us aggregate measures of multifactor agricultural productivity was undertaken using imputation accounting statistical meta function and statistical productivity decomposition methods the study indicated that public sector research should be focused on general and pretechnology sciences while private sector resources should be channeled to applied research and technology advancement

managing technological development lessons from the newly industrializing countries this survey looks at the technological development of the newly industrializing countries to draw some important lessons for firms and governments in other developing countries first inventing products and processes is not at the center of the technological development needed for successful industrialization it is at the fringe what is at the center is acquiring the capabilities needed for efficient production and investment second some countries have overemphasized the drive for technological self sufficiency and paid a high price in poor productivity what makes the best economic sense is to combine foreign and local technological elements and to do this in a way that progressively develops local capabilities in areas where they can be more efficient third the acquisition of technological capability does not come merely from experience though experience is important fourth the economic environment through its influence on the technological efforts of firms is very important in determining the productivity of a country s resources

predatory versus productive government the case of u s agricultural policies this essay will argue that agricultural policy in the united states has led to both the enhancement of efficiency through productive policies and the transfer of wealth and income to special interests through redistributive or predatory policies these two activities can be labeled as pests and perts pest policies or political economic seeking transfers are meant to redistribute wealth from one social group to another and are not explicitly concerned with efficiency in contrast perts or political economic resource transactions are intended to correct market failures or to provide public goods these policies have neutral distributional effects at least in design a review of the history of public policy in agriculture reveals not only tension between the pert and pest roles of the public sector but also some coordination between these two types of activities as different interest groups pressure the political process the government trades off pests and perts in its attempts to acquire balance and secure political power at times this has led to combinations of programs that appear incoherent in such a world the challenge for economists is to design and advocate policies that are both economically productive and politically sustainable

technical change in latin american manufacturing firms review and synthesis abstract this paper reviews the accumulated evidence from a number of firm level case studies of technical change in latin american manufacturing industries carried out during the late 1970s and 1980s these studies it is argued have considerably advanced our understanding of the nature determinants and impact of incremental technical change in industrial enterprises but while the studies are of considerable importance to discussions of infant industry protection and dynamic comparative advantage their restricted scope does not allow us to arrive at any hard and fast policy conclusions the paper closes with a consideration of some possible research issues for the 1990s emphasizing how firm level technical change may be affected by changing macroeconomic conditions and the advent of new microelectronics based technologies

the gains from agricultural research under distorted trade abstract this paper explores the gains from research issue within the framework of a product which is traded with the aid of export subsidies because of the taxpayer burden associated with increased exports it is quite possible for the returns to research to be negative a decline in the rate of protection through a rising world market leads to a linear increase in the gains from research while a rise in the internal support price will cause a non linear and negative response if the supply shift is pivotal and a linear and negative response if it is parallel finally global returns to research will be higher than individual country returns and will always be positive in a free trade environment

political economy of public policies insights from distortions to agricultural and food markets the agricultural and food sector is an ideal case for investigating the political economy of public policies many of the policy developments in this sector since the 1950s have been sudden and transformational while others have been gradual but persistent this paper reviews and synthesizes the literature on trends and fluctuations in market distortions and the political economy explanations that have been advanced based on a rich global data set covering a half century of evidence on commodities countries and policy instruments the paper identifies hypotheses that have been explored in the literature on the extent of market distortions and the conditions under which reform may be feasible

hicksian vs marshallian welfare measures why do we do what we do although they are in closely related fields environmental economists often use hicksian exact welfare measures whereas agricultural economists typically use marshallian surplus measures our general objective is to explore the determinants of that choice we begin with an illustration of the bias in marshallian measures based on the linear model then we review the differences in applied welfare economics as conducted by environmental and agricultural economists including differences in the types of data policy problems and parameter estimates that might account for their different approaches we show that correcting a marshallian measure for income effects may involve a loss of precision in order to reduce bias we then turn to a more specific analysis using the mean squared error criterion to evaluate the choice between exact hicksian and marshallian measures based on the semilog model

technological capabilities and industrialization abstract this paper reviews the implications for industrial strategy of recent research on technological capabilities at the firm and national levels after exploring the nature and determinants of microlevel technological development a simple framework for explaining the growth of national capabilities is set out based on the interplay of incentives capabilities and institutions each may suffer market failure and so require corrective intervention the experience of some industrializing countries is described to assess the validity of this framework it is concluded that interventions carefully and selectively applied are necessary for industrial success

sustaining growth in agriculture a quantitative review of agricultural research investments abstract growth in agriculture depends on many things but one of the most important is investment in agricultural research decision making in the agricultural research policy area can only be aided by access to better information this article overviews a recent endeavor to move policy dialogue beyond merely qualitative impressions towards a process that is underpinned with new and cogent data the data used have been assembled at isnar in a manner designed to make comparisons both over time and between countries more valid than has been the case in the past the comparisons thus possible reveal considerable diversity both between countries and between broad regional aggregations also illuminated here are issues related to the commodity orientation capital and labor intensity and size and scope of particular national programs

measuring the social costs of suboptimal combinations of policy instruments a general framework and an example abstract since most agricultural programs employ two or more policy instruments simultaneously it is notable that little research has attempted to find optimal instrument combinations and no research exists which evaluates the social costs unrealized benefits of combining instruments suboptimally in our paper we report a simple and feasible method to find optimal policy instrument combinations and we provide the first general formal approach to measuring the social costs of suboptimal policy instrument combinations our approach is illustrated in an analysis for five major u s crops corn feed grains wheat rice cotton the simple model we employ for the illustration suggests that except for the feed grains program the observed programs combined policy instruments quite suboptimally we conclude that agricultural economics research now can and should begin placing increased emphasis on studying optimal policy instrument combinations

economic development institutional change and the political economy of agricultural protection an econometric study of belgium since the 19th century this empirical study uses 100 years of annual data on 11 agricultural commodities from belgium to measure the impact of structural changes coinciding with economic development and changes in political institutions on agricultural protection the analysis shows that changes in agricultural protection are caused by a combination of factors governments have increased protection and support to farmers when world market prices for their commodities fell and vice versa offsetting market effects on producer incomes other economic determinants were the share of the commodities in total consumer expenditures negative effect and in total output of the economy positive effect with belgium a small economy there was no impact of the trade position changes in political institutions have affected agricultural protection democratic reforms which induced a significant shift in the political balance towards agricultural interests such as the introduction of the one man one vote system led to an increase in agricultural protection the integration of belgian agricultural policies in the common agricultural policy in 1968 coincided with an increase in protection ceteris paribus both institutional factors related to changes in access to and information about the decision making at the eu level and structural changes in the agricultural and food economy may explain this effect

a comparison of oligopoly welfare loss estimates for u s food manufacturing capitalizing on theoretical advances in calculating deadweight welfare losses due to imperfect competition we compare eight empirical estimates for the u s food manufacturing industries the estimates incorporate varying theoretical assumptions about demand supply and firm pricing behavior and utilize various data sources time periods and assumptions about the proper competitive benchmark while the estimates of average allocative losses range widely there is a high degree of congruence in the rankings of economic losses due to market power thus from the perspective of efficient antitrust enforcement the newer theoretical oligopoly approaches and the traditional structure conduct performance models would target similar industries

least cost subsidization alternatives this paper addresses the problem of designing least cost subsidy schemes for agriculture thus it departs somewhat from the mainstream of the literature on agricultural policy analysis which following wallace s pioneering work focuses on evaluating alternative policies in a welfare theoretic context the approach taken here is more closely related to that taken in the optimal taxation literature e g mirrlees it involves the specification of a goal of farm policy and an examination of appropriate policy instruments to achieve that goal the only policy instruments considered are linear subsidies i e subsidies all individuals receive while the criterion for choosing among alternative subsidy schemes is the minimization of government expenditure hence we are interested in isolating the cheapest way of attaining a stated policy objective and we do not consider the welfare consequences of such policy action no use is made of traditional welfare measures like deadweight loss and consumer surplus the approach is purely positive and therefore ignores issues like those raised in gardner s recent paper on efficient redistribution of eco

is the united states really underinvesting in agricultural research that the level of public investment in u s agricultural research is too low is widely accepted this paper argues that there are two important limitations to the evidence assembled in support of the underinvestment hypothesis a many authors have compared the social rate of return to public investments with the private rate of return to private investments b costs of public expenditures on agricultural research have been underestimated by a failure to account for the marginal excess burden of the tax collection system taking these two factors into account evidence in support of the underinvestment hypothesis is weakened considerably

long memory in stock market trading volume this article examines consistent estimation of the long memory parameters of stock market trading volume and volatility the analysis is carried out in the frequency domain by tapering the data instead of detrending them the main theoretical contribution of the article is to prove a central limit theorem for a multivariate two step estimator of the memory parameters of a nonstationary vector process using robust semiparametric procedures the long memory properties of trading volume for the 30 stocks in the dow jones industrial average index are analyzed two empirical results are found first there is strong evidence that stock market trading volume exhibits long memory second although it is found that volatility and volume exhibit the same degree of long memory for most of the stocks there is no evidence that both processes share the same long memory component

optimal residual based tests for fractional cointegration and exchange rate dynamics a lagrange multiplier test of the null hypothesis of cointegration in fractionally cointegrated models is proposed the test statistic uses fully modified residuals to cancel the endogeneity and serial correlation biases and standard asymptotic properties apply under the null and under local alternatives with iid gaussian errors the asymptotic gaussian power envelope of all unbiased tests is achieved by the one sided two sided test the finite sample properties are illustrated by a monte carlo study in an application to the dynamics among exchange rates for seven major currencies against the u s dollar mixed evidence of the existence of a cointegrating relation is found

the economic cost of the cap revisited this paper reports estimates of the domestic economic cost of the common agricultural policy cap from computable general equilibrium simulations which incorporate imperfect competition in the non primary sectors as well as explicit modelling of agricultural protection imperfect competition is characterised to include hierarchical preferences addressing the notion of varietal diversity as an important decision variable in consumer behaviour results indicate that repeal of the cap would reduce varietal diversity in food processing in the eu causing utility losses however these would be countered by positive varietal effects in other sectors and by strong allocative effects the net cost of the cap to the eu is estimated at 0 2 of gross domestic product gdp for an individual member state the cost can be considerably larger as with the uk where the estimate is above 0 5 of gdp

three decades of industrialization this article reviews the experience of growth and industrialization in the postwar period in more than 100 economies drawing on time series data over a three decade period economies are classified according to their population size the share of primary or manufactured goods in their exports and the weight of exports in gross domestic product gdp the authors examine the composition of demand trade output manufacturing type and factor use overall and between sectors as they relate to income growth higher income growth and more marked transformation are found among the groups with large populations a predominance of manufactures in exports and a larger role of exports the authors also found that the patterns suggested by cross country analysis are robust when tested using the time series data now available although development experiences may vary over time and across countries there is sufficient uniformity within them for the main features of structural transformation to emerge as clear and consistent patterns of modern economic growth

the effect of long memory in volatility on stock market fluctuations abstract recent empirical evidence demonstrates the presence of an important long memory component in realized asset return volatility we specify and estimate multivariate models for the joint dynamics of stock returns and volatility that allow for long memory in volatility without imposing this property on returns asset pricing theory imposes testable cross equation restrictions on the system that are not rejected in our preferred specifications which include a strong financial leverage effect we show that the impact of volatility shocks on stock prices is small and short lived in spite of a positive risk return tradeoff and long memory in volatility

errors in the numerical assessment of the benefits of price stabilization this paper presents a simple computational procedure for determining a consumer s willingness to pay to have a price stabilization policy implemented numerical simulations are then provided which demonstrate that the commonly used expected surplus measures whether hicksian or marshallian can in fact seriously misstate the true benefits of price stabilization these simulations also illustrate the extent to which the results may be dependent upon the assumptions made implicitly or explicitly regarding the consumer s attitudes toward risk thereby underscoring the need to conduct sensitivity analyses to determine the robustness of cost benefit assessments with respect to these assumptions

efficient income redistribution for a small country using optimal combined instruments abstract in this paper i improve gardner s surplus transformation curve framework by assuming that governments are able to vary many policy instruments simultaneously instead of only one i use my framework to find the combination of the currently used instruments which provides the most efficient income redistribution for the austrian bread grains market comparing the most efficient policy with the actual policy reveals that 464 10 6 austrian shillings were wasted i theoretically compare for a small country the transfer efficiency of every possible pair of the four major agricultural policy instruments floor price production quota co responsibility levy and deficiency payments without considering the marginal cost of public funds mcf deficiency payments cum quota equal to a fully decoupled direct income support is the most efficient policy succeeded by floor price cum quota and floor price cum deficiency payments if the mcf is taken into account the ranking crucially depends on the market parameters the transfer level and the value of the mcf for the austrian bread grains market i empirically demonstrate that given the present support level a fully decoupled direct income support redistributes income most efficiently as long as the mcf is lower than 1 17 beyond this value a floor price cum quota policy becomes more efficient a floor price cum deficiency payments policy is never superior to the floor price cum quota

gains and losses of sugar program policy options high domestic sugar prices supported by u s sugar policy have induced a significant substitution of corn sweeteners for sugar recognizing the close relationship between sugar and corn sweeteners this study applies a general equilibrium approach to evaluate the distributional effects of three different policy options i e quota tariff and deficiency payment on sugar related interest groups the results show that the current quota policy intended ostensibly to protect domestic sugar producers have hurt foreign exporters it will harm domestic sugar producers if the trend continues additionally the quota program is the most expensive of the options considered

reform of the european union s common agricultural policy how to reach gatt compatibility abstract this paper studies the reform of the european union s common agricultural policy cap it examines three questions 1 1 do current reforms meet the targets specified in the uruguay round agreement 2 2 what additional reforms are needed to make cap gatt compatible and 3 3 does cap reform alleviate the eu s budgetary problem to investigate these issues we use a six region 13 sector computable general equilibrium model with explicitly modeled policies we find that cap reform worsens the eu s budgetary situation and does not meet the gatt targets we quantify support price reductions and quota increases needed to reach the targets

towards an understanding of technical change in semi industrialized countries in industrialized countries technical change in manufacturing pertains to cost reduction improvements in production processes and to the creation of new products in sic s semi industrialized countries which are characterized by protection market and information distortions and rationing technical change consists mostly of the adaptation of imported technologies to local conditions the firms operating in these countries try to optimize an objective function generally of profits or net worth under various constraints to some extent possibilities of substitution exist between directly productive and r d activities or between investment in new capital equipment and maintenance and modification activities to keep old machinery running and even expanding output most frequent constraints include credit rationing with severe limitations in the financing of working capital quotas for the supply of raw material inputs produced by the state import restrictions etc as far as import restrictions the relevant case seems to be not that of a high tariff but an outright prohibition of imports of certain materials or equipment as this will generally demand r d to modify the received technology the feasibility of doing so seems to depend strongly on the availability of the required technical skills

endogenous trading volume and momentum in stock return volatility this article examines the ability of volume data to shed light on the source of persistence in stock return volatility a mixture model in which a latent common factor restricts the joint density of volume and returns is used to relax the assumption of exogenous volume used in previous studies we use a point in time signal extraction procedure to identify this latent process and a calibrated simulation to conduct analysis of the viability of the model to explain important properties of the data using daily returns and volume on individual stocks our procedure cannot accommodate serial dependence in squared returns

productive and predatory public policies research expenditures and producer subsidies in agriculture governments are postulated to maximize a political preference function in choosing two policy instruments research expenditures a productive policy that improve social welfare and production subsidies a predatory policy that incur deadweight losses each policy affects the distribution of income between producers and consumers governments determine the optimal mix of policies taking into account interaction effects between research and subsidy expenditures in addition to providing an explanation for underinvestment in research the paper determines conditions under which research and subsidy policies are complementary such conditions are shown to characterize u s agriculture underinvestment in research is therefore less severe than in some other countries

efficiency of alternative policies for the ec s common agricultural policy the common agricultural policy cap of the european community ec is facing a crisis from budgetary and political pressures this study analyzes the relative efficiency of four policy options discussed at the recent emergency summit in brussels including a price reduction coresponsibility levies production controls and a two price plan these are assessed in terms of their efficiency in achieving producer welfare a two price plan is superior to a production quota only at lower producer income goals a price reduction policy is more efficacious than a coresponsibility levy but both are shown to be inferior to either quotas or a two price plan

endogenous commodity policies and the social benefits from public research expenditures standard analyses of social benefits of public agricultural research expenditures in the presence of commodity policies take the commodity policy as fixed in reality governments adjust commodity policy levels when the research has important income distributional effects we use two examples of commodity policies to analyze the consequences of endogenizing commodity policies under three alternative decision making models of government relaxing the assumption of fixed commodity policies has important impacts on conclusions regarding the social benefits of research in the presence of commodity policies

the role of technological learning in the exports of manufactured goods the case of selected capital goods in brazil abstract the object of this study is to explain the evolution of brazilian capital goods exports in terms of technological learning within the sector and government policy but emphasizing the former the study identifies relevant learning processes for eventual introduction into export behaviour equations or as a basis for theoretical models it starts from a series of eight microeconomic case studies of technologically sophisticated firms in brazil among the specific issues addressed in the case studies are 1 the nature of technological learning are there recognizable sequences does it generally lead to products of increased technological complexity 2 how if at all technological learning has benefited exports 3 other endogenous firm spin offs principally from reputation effects which were important for increased efficiency and for the emergence of exports 4 the economic value of the firm s accumulated experience and the factors determining it

causes of u s farm commodity programs this paper i s an attempt to explain variations by commodity in producer protection afforded by farm price support programs since the1930s particularly emphasized are theideas that these programs are essentially income redistributional measures and that given political forces the programs are attempts to redistribute efficiently variables associated with the cost to producers of generating political pressure and the social cost deadweight losses of redistribution are both found to be empirically important copyright 1987 by university of chicago press

compensating variation consumer s surplus and welfare the compensating variation was defined by j r hicks 1942 as the amount one would have to deduct from a person s income to make him just as well off after a change in prices and income as he had been in the initial situation if the compensating variation is positive the individual is better off under the new situation since the compensating variation furnishes a uniquely defined numerical cardinal indicator of welfare improvement it provides an implicit ranking of alternative prospective situations not only relative to the initial situation but also relative to each other in practice this appears to be how this and other tools of cost benefit analysis are actually used one is interested in knowing not only whether a particular bridge or a particular excise tax will lead to an improvement in welfare but which out of a set of alternative bridges or alternative tax systems will improve welfare the most 1 in this paper we analyze conditions under which the compensating variation can be validly used in this generalized sense these turn out to be precisely the same as conditions previously derived see our 1976 paper for the valid use of consumer s surplus as a welfare measure in our final section we analyze the problem of deriving the generalized equivalent and compensating variations either exactly or approximately from observable demand functions by means of generalizations of or alternatives to consumer s surplus

political regimes and economic growth arguments that relate regimes to growth focus on property rights pressures for immediate consumption and the autonomy of dictators while everyone seems to agree that secure property rights foster growth it is controversial whether democracies or dictatorships better secure these rights the main mechanism by which democracy is thought to hinder growth is pressure for immediate consumption which reduces investment only states that are institutionally insulated from such pressures can resist them and democratic states are not the main argument against dictatorships is that authoritarian rulers have no interest in maximizing total output these views are summarized in turn

rationalizing agricultural export subsidies comment alston carter and smith acs claim an export subsidy can be an efficient mechanism for redistributing income to producers and is always so in a small country unable to influence the world price when raising government revenue causes deadweight losses this claim is surprising in view of the general result in trade theory that domestic distortions are more efficient transfer mechanisms than border distor

price distorting compensation serving the consumer and taxpayer interest in this paper we address a bothersome question for public choice analysis why do consumers and taxpayers acquiesce to seemingly inefficient wealth transfers to a relatively small number of producers the most common and briefest answer given by political economists is that any individual consumer taxpayer suffers too little in the rent seeking game to bear the cost of opposing the aggressive political influence of producers who enjoy the concentrated benefits in this paper we examine an alternative answer lying in the potential benefits that accrue to consumers and taxpayers from price distorting wealth transfers to heterogeneous producers this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item

structural adjustment and learning to live without subsidies in oecd countries consumers and taxpayers in oecd countries stand to gain substantially more from the elimination of farm subsidies than farmers would lose this is the overwhelming consensus of numerous empirical studies blandford despite the evidence and widespread agreement among economists on its implications for policy farm support remains almost as high as ever in oecd countries oecd 1994a the substantial reduction in subsidies in new

stock prices and volume the authors undertake a comprehensive investigation of price and volume co movement using daily new york stock exchange data from 1928 to 1987 they adjust the data to take into account well known calendar effects and long run trends to describe the process they use a seminonparametric estimate of the joint density of current price change and volume conditional on past price changes and volume four empirical regularities are found 1 positive correlation between conditional volatility and volume 2 large price movements are followed by high volume 3 conditioning on lagged volume substantially attenuates the leverage effect and 4 after conditioning on lagged volume there is a positive risk return relation article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

the political economy of public research investment and commodity policies in agriculture an empirical study the paper tests a political economy theory of simultaneous government decision making on income redistribution through commodity policies and on public research investment in agriculture we use data from 37 countries on agricultural protection and public agricultural research expenditures pari the empirical results are consistent with the political economy hypotheses the analysis suggest that structural changes in the economy have important effects on the political incentives for governments not only to subsidize or tax farmers but also to invest in public agricultural research furthermore the analysis supports the hypotheses that the impact of such structural changes on government decision making on pari is non linear and conditional on other factors regarding the impact of political institutions the results suggest that more democracy neither leads to more distortionary transfers agricultural protection nor to lower investment in public goods pari

the institutional framework and economic development the compound growth rates of per capita output and farrell type efficiency measures for 115 market economies over the period 1960 80 were compared with measures of political civil and economic liberty it was found that the institutional framework has significant and large effects on the efficiency and growth rate of economies politically open societies which subscribe to the rule of law to private property and to the market allocation of resources grow at three times the rate and are two and one half times as efficient as societies in which these freedoms are abridged

equity considerations in economic and policy analysis there is little doubt that equity considerations play some role in human decision making this can be seen through statements that we are all created equal or that we have equal rights this can also be seen through some of the transfer mechanisms that societies are willing to put in place for the benefits of the poor or the malnourished in spite of this evidence the role of equity in resource allocation remains poorly understood most economic analyses tend to focus on efficiency issues and avoid addressing distribution issues as argued by sen 1987 1992 as long as human behavior is affected by equity considerations it seems that economics could be made more productive by paying greater attention to welfare distribution at the center of equity is whether and how to distinguish between people in terms of their needs their abilities their contributions and their individual rights people being different at least some of their differences seem to be relevant to the economic evaluation of equity issues at this point it remains somewhat unclear how to approach such issues the current debate about equity has been profoundly influenced by rawls s theory of justice rawls s theory is based on the concept of justice as fairness 1 it relies on a so called original position where individuals do not yet know their exact position in society rawls suggests that a society is just if its current members would find the original position fair rawls s views have been influential yet controversial part of the debate comes in part from some antagonism between equity and rights e g nozick and private property rights are often seen as contributing to inequalities of wealth in modern society the objective of this paper is to explore equity issues with a special focus on interactions between efficiency equity and the role of information in resource allocation in the next

in search of rational government what political preference function studies measure and assume political preference function ppf studies assume that policy making can be described by a mathematical problem in which a rational government maximizes a function of interest groups welfares the purpose of my paper is to explain in depth ramifications of ppf study assumptions and methodology ppf studies that attempt to measure interest group political power do so by measuring marginal rates of transformation along a pareto frontier one can estimate political power with a ppf only if observed policies are pareto efficient which may depend on the assumed number of interest groups and policy instruments marginal rates of transformation need not reveal anything meaningful about interest group political power and may incorrectly measure the direction of transfers

order aggressiveness pre trade transparency and long memory in an order driven market abstract recent empirical research has documented that the state of the limit order book influences stock investors strategies investors place more aggressive orders when the same side of the order book is thicker and less aggressive orders when it is thinner we conjecture and demonstrate that this behavior is related to long memories of trading volume volatility and order signs in stock markets we investigate our conjecture in two types of artificial stock markets a transparent market in which agents observe all limit orders on both sides of the book and order volumes at those prices before they trade and a less transparent market in which agents observe only the best five bid and ask quotes with the depth available at these limit prices the first market structure resembles certain actual stock exchanges in the level of pre trade transparency such as the australian stock exchange nyse openbook and the london stock exchange whereas the second market structure is consistent with stock exchanges such as euronext paris the toronto stock exchange the tokyo stock exchange and hong kong exchanges and clearing we demonstrate that our long memory results are robust with different levels of pre trade transparency implying that the strategy constructed by the state of the order book is key for explaining long memories in many actual stock exchanges

are government transfers efficient an alternative test of the efficient redistribution hypothesis the efficient redistribution hypothesis says that no available government policies are pareto superior to observed government policies efficient redistribution from government policy is a central tenet of much recent theoretical and applied political economy literature in this paper limitations of previous attempts to test the efficient redistribution hypothesis are discussed and an alternative test of the efficient redistribution hypothesis that uses vector optimization theory and bootstrap methodology is presented

understanding the fisher equation it is argued that univariate long memory estimates based on ex post data tend to underestimate the persistence of ex ante variables and hence that of the ex post variables themselves because of the presence of unanticipated shocks whose short run volatility masks the degree of long range dependence in the data empirical estimates of long range dependence in the fisher equation are shown to manifest this problem and lead to an apparent imbalance in the memory characteristics of the variables in the fisher equation evidence in support of this typical underestimation is provided by results obtained with inflation forecast survey data and by direct calculation of the finite sample biases to address the problem of bias the paper introduces a bivariate exact whittle bew estimator that explicitly allows for the presence of short memory noise in the data the new procedure enhances the empirical capacity to separate low frequency behaviour from high frequency fluctuations and it produces estimates of long range dependence that are much less biased when there is noise contaminated data empirical estimates from the bew method suggest that the three fisher variables are integrated of the same order with memory parameter in the range 0 75 1 since the integration orders are balanced the ex ante real rate has the same degree of persistence as expected inflation thereby furnishing evidence against the existence of a fractional cointegrating relation among the fisher variables and correspondingly showing little support for a long run form of fisher hypothesis copyright 2004 john wiley sons ltd

speculative behavior and the dynamics of interacting stock markets abstract we develop a simple agent based financial market model in which heterogeneous speculators apply technical and fundamental analysis to trade in two different stock markets speculators strategy market selections are repeated at each time step and depend on predisposition effects herding behavior and market circumstances simulations reveal that our model is able to explain a number of nontrivial statistical properties of and between international stock markets including bubbles and crashes fat tailed return distributions volatility clustering persistent trading volume coevolving stock prices and cross correlated volatilities against this background our model may be deemed to have been validated

the goals of u s agricultural policy a mechanism design approach this article examines motivations underlying the government s choice of alternative policy mechanisms for subsidizing agriculture optimal policies are analyzed for three government objectives one where the government wishes to ensure a minimum level of net income for all farmers a second where the government s only concern is to transfer income from consumers and taxpayers to the farm sector and a final augmented income transfer objective the analysis offers an explanation for agricultural policy mechanisms that involve overproduction by high cost producers relative to a free market equilibrium such a distortion might arise from the existence of nonmarket values for the production of relatively high cost farmers in the government s objective

acquisition of technological capability in development a quantitative case study of pakistan s capital goods sector there is by now a substantial body of literature that points to the importance of technological capability acquisition for industrial development this literature however is almost exclusively based on qualitative case studies this paper addresses the lack of objective quantitative measurement and testing using data from a survey among capital goods manufacturers in pakistan it develops quantitative proxies for technological capability and various learning mechanisms that are believed to contribute to its emergence these are used in a regression analysis aimed at finding statistical support for the contention in the literature that capability results from an effortful learning process and at analyzing the main dimensions of that process

judging agricultural policies a survey this survey provides a structured picture of 40 years of literature which uses welfare economic tools to judge agricultural policy challenges and developments of normative agricultural policy analysis are discussed in an easily accessible graphical framework it is shown how the literature has gone from examining a very small discrete set of simple policies to a much broader often continuous set of policies that combine policy instruments simultaneously the importance of the pareto criterion used to explore the limits of how government can affect welfare is revealed moreover given the importance of the objective of income redistribution in agricultural policy agricultural economists have often departed from the purely efficiency oriented tradition in economics it is shown that they have tried to incorporate equity considerations by either adding these criteria as constraints to the social welfare function or directly incorporating these criteria in the functional form of the social welfare function

public investment and real price supports abstract the social rate of return to public investment in industries with fixed real price supports is studied using a simple general equilibrium model fixed real price supports are shown to enhance the likelihood of immiserizing growth due to capital accumulation or technological innovation in the supported sector general conditions under which an intervention price will induce a negative social rate of return to public investment are derived

volatility persistence in stock market by using the unique dataset that consists of all brokers daily trading information i propose an empirical methodology to construct a granger causality financial network to study the relationship between dynamics of volatility and information diffusion in a stock market the financial network i proposed not only provides a new way to describe mutual interconnectedness of brokers in the market but the empirical results also show the financial network density is positively correlated to the realized volatility of the market

incomplete markets and government agriculture policy this paper investigates the welfare effects of several stereotypical agricultural policies in an economy with production risk and incomplete contingent claim markets the policies analyzed include target price deficiency payment programs the brannan plan production controls the cochrane plan and land set asides when there is no trading in contingent claims and when economic parameters take on values characteristic of staple food markets the paper finds that ajoint brannan plan production control program is often welfare increasing however production controls on their own tend to be welfare decreasing in addition land set asides are generally welfare reducing even in the presence of a brannan plan these results are derived analytically in a simple equilibrium model they are illustrated with a numerical example which demonstrates that welfare benefits from typical agricultural policy interventions can be large

welfare implications of equilibrium supply and demand curves in an open economy line integral theory is used to prove that in a closed economy the net domestic social welfare effects of a market distortion can be captured in the distorted market alone by using equilibrium supply and demand curves considerable confusion exists in the applied literature about the proper application of this proposition it is shown that the proposition does not generally hold for open economies it is shown that in general neither geometric areas behind equilibrium supply curves nor geometric areas behind equilibrium demand curves have any welfare significance

the gains from research into tradable commodities this paper develops a model for assessing the aggregate level and distribution of the benefits of reseach into tradable commodities it estimates gains to australia and to the rest of the world from research into the wool and wheat industries

explaining price policy bias in agriculture the calculus of support maximizing politicians a model is developed to explain observed patterns of policy intervention in agriculture we analyze the interaction between political support seeking politicians and supportsupplying citizens society consists of a rural and urban group we determine the effects on transfers of relative group size disparities in income endowments between groups and the deadweight loss of redistribution the framework advanced is an alternative to that of the interest group model and is used to explain for example why the export sectors in developing countries are taxed more and why the united kingdom is less adamant for higher price supports than germany

the effect of common sources of regression error on benefit estimates discussions of the sources of error in recreation demand analysis are common in the existing literature the most traditional line of thought e g gum and martin considers the error component in predicting the individual s recreation behavior to arise from unmeasured socioeconomic factors others e g hanemann attribute at least some of this error to fundamental randomness in human behavior applied statisticians e g hiett and worrall on the other hand suggest that recall of annual number of recreational trips i e the quantity demanded is subject to substantial error still others e g brown et al have argued that recall of explanatory variables such as travel expenses contains error despite the discussion of potential error sources there is no work which relates the sources of error in the demand relationship with benefit measurement 1 of practical importance in recreational demand estimation is whether error assumptions have an influence on welfare measures since it is for public policy decision purposes that recreational demand estimation is usually undertaken will the estimated consumer surplus derived from demand analysis be independent of the assumed source of the error in the regression the purpose of this paper is to explore how the assumptions about sources of error influence estimates of recreation benefits a discussion of the various sources of error in de

the welfare economics of a biofuel tax credit and the interaction effects with price contingent farm subsidies a framework is developed to analyze the effects of a biofuel consumer tax exemption and the interaction effects with a price contingent farm subsidy ethanol prices rise above the gasoline price by the amount of the tax credit corn farmers gain directly while gasoline consumers only gain from any reduction in world oil prices due to the extra ethanol production domestic oil producers lose historically the intercept of the ethanol supply curve is above the gasoline price hence part of the tax credit is redundant and represents rectangular deadweight costs that dwarf triangular deadweight cost measures of traditional farm subsidies copyright 2007 oxford university press

agricultural incentives in developing countries measuring the effect of sectoral and economywide policies the impact of sector specific direct and economywide indirect policies on agricultural incentives for 18 developing countries for the period 1975 84 are estimated the direct effect is measured by the proportional difference between the producer price and the border price adjusting for distribution storage transport and other marketing costs the indirect effect has two components 1 the impact of the unsustainable portion of the current account deficit and of industrial protection policies on the real exchange rate and thus on the price of agricultural commodities relative to nonagricultural nontradables and 2 the impact of industrial protection policies on the relative price of agricultural commodities to that of nonagricultural tradable goods the authors found that a in almost all cases the direct effect is equivalent to a tax on exportable goods and to a subsidy for importables b the indirect effect also taxes agriculture and dominates the direct effect and c the direct policies for both importables and exportables stabilize domestic producer prices

the price variability volume relationship on speculative markets this paper concerns the relationship between the variability of the daily price change and the daily volume of trading on the speculative markets our work extends the theory of speculative markets in two ways first we derive from economic theory the joint probability distribution of the price change and the trading volume over any interval of time within the trading day and second we determine how this joint distribution changes as more traders enter or exit from the market the model s parameters are estimated by fiml using daily data from the 90 day t bills futures market the results of the estimation can reconcile a conflict between the price variability volume relationship for this market and the relationship obtained by previous investigators for other speculative markets this paper concerns the relationship between the variability of the daily price change and the volume of trading on speculative markets previous empirical studies 2 3 6 12 14 16 of both futures and equity markets always find a positive association between price variability as measured by the squared price change ap2 and the trading volume 2 there are two explanations for the relationship clark s 2 explanation which is secondary to his effort to explain why the probability distribution of the daily price change is leptokurtic emphasizes randomness in the number of within day transactions in clark s model the daily price change is the sum of a random number of within day price changes the variance of the daily price change is thus a random variable with a mean proportional to the mean number of daily transactions clark argues that the trading volume is related positively to the number of within day transactions and so the trading volume is related positively to the variability of the price change the second explanation is due to epps and epps 6 their model examines the mechanics of within day trading the change in the market price on each within day transaction or market clearing is the average of the changes in all of the traders reservation prices epps and epps assume there is a positive relationship between the extent to which traders disagree when they revise their reservation prices and the absolute value of the change in the market price that is an increase in the extent to which traders disagree is associated with a larger absolute price change the price variability volume relationship arises then because the volume of trading is positively related to the extent to which traders disagree when they revise their reservation prices

financing agricultural research international investment patterns and policy perspectives abstract for much of the post wwii period governments in rich and poor countries alike have increased public spending on and performance of agricultural research the public involvement in and policies toward agricultural research and development r d have undergone a sea of change in more recent years in this article we document these changes focusing on the public and rapidly evolving private roles in financing agricultural r d and the international dimensions of these funding and policy issues we restate the principles for government intervention in research and highlight the financing aspects of these interventions before concluding the paper with some reflections on the implications of all these changes for internationally conceived and funded public agricultural r d

political institutions and international patterns of agricultural protection this paper analyzes the influence of political systems and rights in patterns of agricultural protection across commodities countries and over time four political systems and a qualitative index of political rights account for differences in political institutions the analysis incorporates the effects of development of constraints on tax collection feasibility and of comparative advantages and terms of trade pluralistic systems are associated with higher agricultural protection levels although in a nonlinear fashion access to pluralism appears to be important although further democratization partly dissipates protection copyright 1994 by mit press

market distortions and benefits from research the benefits from cost reducing research and their distribution under a range of price policies are compared with those that would arise in the absence of the policies while any price policy affects the distribution of research benefits the net national or world benefits may be reduced lef unchanged or increased depending on the nature of the policy and the significance of the country in the world market for the commodity some implications for decisions on price policies and for distortions in incentives for the allocation of resources to research are raised

government intervention in imperfectly competitive agricultural input markets the frequent demands for protection by the fertilizer industry in many developed countries may have important implications for the agricultural sector this paper provides a theoretical justification for government intervention in the fertilizer market in the form of an import tariff against foreign competitors however a superior policy would be for the government to counter the competitive distortion that exists in the market an even better outcome is attained by using both policies simultaneously moreover since the fertilizer industry undergoes continuous structural change the extent to which optimal policies should vary is also investigated

forecasting volatility and volume in the tokyo stock market long memory fractality and regime switching abstract we investigate the predictability of both volatility and volume for a large sample of japanese stocks the particular emphasis of this paper is on assessing the performance of long memory time series models in comparison to their short memory counterparts since long memory models should have a particular advantage over long forecasting horizons we consider predictions of up to 100 days ahead in most respects the long memory models arfima figarch and the recently introduced multifractal model dominate over garch and arma models however while figarch and arfima also have quite a number of cases with dramatic failures of their forecasts the multifractal model does not suffer from this shortcoming and its performance practically always improves upon the naive forecast provided by historical volatility as a somewhat surprising result we also find that for figarch and arfima models pooled estimates i e averages of parameter estimates from a sample of time series give much better results than individually estimated models

a positive theory of agricultural protection the present paper analyses the political economy of agricultural protection in a general equilibrium framework rational politicians offer protectionist policies in return for political support from their constituency individuals in the economy have different factor endowments politicians exploit these differences in establishing redistributive policies when maximizing political support changes in economic variables such as the urban rural income gap capital intensity the share of agriculture in total output and total employment and the share of food in consumer expenditures affect the political equilibrium policy the analysis concludes that the observed correlation between economic development and agricultural protection is caused by a multiplicity of factors

a dual approach to evaluating research benefits in the presence of trade distortions we present a new approach for evaluating the welfare consequences of technical change a major feature is its ability to incorporate multiple distortions and multiple sources of technical change in interrelated markets a modified balance of trade function provides money measures of welfare change in terms of producer profits consumer expenditures and tax revenues alternative specifications of technical change are presented to capture the effects of differences in the form of technical change in an illustrative numerical example the approach is applied to a case involving two distortions and technical changes in two related markets the example shows that the approach is reasonably easy to use and that accounting correctly for price distortions can have important implications for research benefit measures

real and spurious long memory properties of stock market data we test for the presence of long memory in daily stock returns and their squares using a robust semiparametric procedure of lobato and robinson spurious results can be produced by nonstationarity and aggregation we address these problems by analyzing subperiods of returns and using individual stocks the test results show no evidence of long memory in the returns by contrast there is strong evidence in the squared returns

eu agri environmental programs and the restaurant table effect the share of agricultural area enrolled in eu agri environmental programs varies significantly between eu member states these national differences are explained based on a model that reflects both that these programs internalize externalities and the political economy we identify six factors that affect the extent to which agri environmental programs are implemented environmental benefits opportunity costs of participation budgetary pressure the share of program expenditures financed by the eu the political weight attributed to farmers at the national and the political influence of each country at the eu level in addition we demonstrate that if the policy decision making process is noncooperative at the eu level countries that contribute less to the eu budget will ceteris paribus implement more programs using data of four years and feasible generalized least square methods we are able to confirm our theoretical results including a noncooperative behavior of eu member states

public agricultural r d design and technological spill ins a dynamic model the paper presents a dynamic model for the analysis of the national agricultural research systems narss strategy in a context of increasing globalisation both intersectoral and international technology spill ins may greatly affect the nars design and this paper proposes an analytical framework for its study when major spill ins are present these spill ins are calculated by applying the yale technology concordance ytc methodology a var vec model is then specified to detect empirically given the calculated spill ins what nars design prevails in a dynamic framework the model is estimated for the italian agriculture data and provides evidence of close dependency on external r d sources