a globally flexible almost ideal demand system the almost ideal demand system is combined with the fourier expenditure system subject to the assumption that preferences are of the price independent generalized logarithmic class the resulting demand system has the desirable features of each of its components aggregate demand equations are consistent with preferences of a representative consumer and consistent estimates of elasticities are obtained for all observed prices application of the new demand system to u s consumption of meats and fish reveals that it fits the data well and that the restriction to the usual specification is rejected

price distortions in agriculture and their effects an international comparison the central thesis of this paper is that agricultural pricing policies pursued by developing countries produce effects which are diametrically opposite to those produced by the pricing policies of many developed countries and that the policies of both are costly in terms of global welfare in general the agricultural sector in developing countries is heavily taxed while that in the developed countries receives substantial price protection the effects of agricultural price distortions on output consumption trade and rural employment are estimated for nine countries in addition the effects of price distortions on the distribution of income between producers and consumers on government revenue and foreign exchange and the net social losses of the policies are calculated the results indicate that there are large income transfers and impacts on migration from the rural to the urban sector in developing countries and from the urban to the rural sector in developed economies

demand for red meat poultry and fish in morocco an almost ideal demand system there is a paucity of data and basic research needed for policy analysis in morocco subjective estimates for elasticities are currently used in making policy recommendations an almost ideal demand system model is used to estimate demand elasticities for beef mutton poultry and fish in morocco mutton is shown to be a luxury good reflecting moroccans preference for mutton demand is shown to be more elastic than has been assumed in some past policy analyses

econometric developments in agricultural and resource economics the first 100 years this article reviews the major contributions of agricultural and resource economists in the area of econometrics over the past 100 years early on a number of agricultural economists were in on the ground floor in terms of developing new econometric methods over time as the economics profession became more empirically oriented agricultural and resource economists increasingly assumed the role of early adopters of new econometric methods even so agricultural and resource economists continue to make useful modifications to econometric techniques in order to adapt the methods to the unique nature of the problems and applications that we study

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

a bayesian approach to aggregation in demand systems smoothing with perfect substitution priors demand analysis requires aggregation of commodities some are imposed at the data collection level leaving some for the estimation level when data are collected the implicit assumption underlying the aggregation is perfect substitutability one gallon of gasoline is viewed by consumers as equivalent to another gallon hence the two are added together while such aggregation can be carried out further by the data analyst it is difficult to incorporate perfect substitutability into the estimation of direct demand systems perfect substitution in that context implies discontinuous demand functions which are not nested within standard empirical demand systems perfect substitution is much more easily handled in a system of inverse demands though an empirical method to impose perfect substitutability in an inverse demand system has not previously appeared in the literature in this article we develop such a method which allows perfect substitutability to be imposed as a prior restriction we use leame

generalized models of japanese demand for fish given a relative lack of knowledge about japanese consumer preferences for fish japanese fish demand is modeled using both marshallian ordinary and inverse demand systems each of which nests a number of competing specifications results indicate that the inverse demand systems dominate the ordinary demand systems in forecasting performance and in nonnested tests the inverse system suggests that japanese fish prices are less responsive to changes in consumption than found in previous studies

promotion of the agricultural sector and political power in austria in most industrialized countries farmers as a small and well orgnized group are ableto influence government decisions to get rent creating proposals enacted two different viewsare presented to explain why the chicagoan view efficient redistribution hypothesis and the virginian view inefficient outcome of political bargaining a vertically structuredempirical model of the austrian farm sector is employed to test both hypotheses quantitativeresults of the welfare transfers from consumers taxpayers to farmers and agribusiness firmsare derived and the political weights of these groups are presented

overlapping expectations and hart s conditions for equilibrium in a securities model hart j econ theory 9 1974 293 311 gave conditions for equilibrium to exist in a securities model where each agent undertakes asset transactions to maximize expected utility of wealth these conditions rule out agents wanting to undertake unbounded balanced transactions to reach a pareto superior allocation given their expectations with mild extra assumptions to make agents unwilling to risk incurring unbounded losses on their portfolios hart s conditions become equivalent to an assumption of overlapping expectations which is comparable to a much weaker form of green s common expectations econometrica 41 1973 1103 1124

a necessary and sufficient condition for the compactness of individually rational and feasible outcomes and the existence of an equilibrium abstract in an economy with arbitrary closed and convex consumption sets we show that page s journal of economic theory 1987 41 392 404 condition of no unbounded arbitrage is necessary and sufficient for compactness of the set of individually rational and feasible allocations in strictly reconcilable economies in which at most one agent may have half lines in his indifference surfaces we show that page s condition is necessary and sufficient for compactness of the set of individually rational utility possibilities for the existence of an equilibrium for non emptiness of the core and for the existence of a pareto optimal allocation these results allow one agent to be risk neutral not permitted by werner s econometrica 1987 55 1403 1418 assumption of no half lines in indifference surfaces our proofs that no unbounded arbitrage is necessary and sufficient for the existence of an equilibrium and for a pareto optimal allocation both rely on the result that non emptiness of the core implies no unbounded arbitrage

cointegration tests and spatial price linkages in regional cattle markets this analysis empirically evaluates spatial linkages in regional cattle markets using cointegration tests of regional price series several markets were not cointegrated over the 1980 through 1987 period however significant increases in cointegration of several regional livestock markets are observed through the 1980s the increased cointegration parallels significant structural changes in the livestock industry a formal analysis of market characteristics reveals that distances between markets industry concentration ratios market volumes and market types have significant influences on cointegration relationships between markets

the nature and extent of the market for high quality beef in japan before the abolition of import quotas it is examined whether wagyu beef produced in japan and high quality beef produced in the united states and exported to japan are components of the same product market in addressing this issue an approach is used for defining the nature and extent of a product market relying on the concept of instantaneous causality the results for selected cuts of beef suggest that the markets are in fact separate

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

alcohol control laws and the consumption of distilled spirits and beer this article tests the social marketing effectiveness of alcohol control laws designed to reduce the consumption of alcoholic beverages the study uses state level historical data to estimate the demand for distilled spirits and beer using economic sociodemographic and control law explanatory variables spirits and beer consumption are found to react differently to changes in economic sociodemographic and regulatory variables these differences suggest a consumer and product segment based approach to alcohol control laws or social marketing that emphasizes measures directed at youths for beer and at price for spirits

a generalized armington trade model respecification abstract even if the original version of the armington model is simple and plausible in estimation the single ces and homotheticity assumptions are too restrictive for practical application and give biased price elasticities this paper develops a generalized armington model which relaxes the single ces and homotheticity restrictions and includes the armington model as a special case the armington and generalized armington trade models are applied to the japanese meat import demand to demonstrate their performance the empirical results rejected the two assumptions imposed on the armington model the generalized armington model provides an alternative to the restrictive but indispensable armington model

searching for the correct benefit estimate empirical evidence for an alternative perspective this paper contrasts the results of the contingent valuation hedonic price and property damages avoided valuation techniques each technique was used to estimate the value of flood risk reduction from the construction of a flood control project voting behavior in a referendum called specifically for the provision of the project was used to further interpret the results from the three valuation studies substantial differences were found between the estimates in explaining these differences an alternative perspective on the current debate over the validity and accuracy of nonmarket value estimates is offered

arbitrage and the flattening effect of large numbers abstract in a model of an exchange economy with a continuum of individuals we show that competitive equilibrium can be regarded as resulting from the elimination of arbitrage opportunities generically the elimination of such opportunities results in a phenomenon we call the flattening effect of large numbers the flattening effect provides a precise meaning to the statement that under perfect competition individuals cannot influence prices they face perfectly elastic demands and supplies the attractive geometry associated with arbitrage and the flattening effect is highlighted in several figures we also link the demonstration of equilibrium through arbitrage with the logic of marginalism journal of economic literature classification number d51

asset market equilibrium with short selling this paper presents simple conditions and a simple proof of the existence of equilibrium in asset markets where short selling is allowed and satiation is possible unlike standard non satiation assumptions the one used here is weak enough to be reasonable in the mean variance capital asset pricing model and in asset market models where investors maximize expected utility and where total returns to individual assets may be negative this paper analyses the existence of equilibrium in exchange economy models where choice sets may be unbounded below and satiation is likely there are two main examples of such models one is an asset market model where investors maximize expected utility and the total return to individual assets may be negative with positive probability the other is the mean variance capital asset pricing model capm where investors do not necessarily maximize expected utility but instead maximize a function of only the mean and variance of return to their portfolios in both of these models the investors choice sets will be unbounded if short selling is allowed to short sell a share of an asset means to borrow it and sell it promising to buy it back and return it to the lender at a later date formally short selling corresponds to holding a negative number of shares if unlimited short selling is allowed then there is no limit to how large negative numbers of shares can be held and therefore the choice sets are unbounded satiation can also occur both in the mean variance model and in the expected utility model unless there is a riskless asset in the expected utility model there may be satiation if the individual assets have negative returns with positive probability as the investor gets more and more shares the potential positive returns get larger and larger but so do the potential negative returns if the investor is very averse to large negative returns then he may eventually be satiated and not want any more shares in the mean variance model the expected return to an investor s portfolio increases as he holds more and more shares of the assets but so does the variance of return it may be that at some point the additional expected return gained from adding more shares to the portfolio is not sufficient to compensate for the increase in variance if so then there will be satiation satiation in the mean variance model iie analysed in nielsen 1987 1988 the expected utility model with short selling has been used in many specific analyses of portfolio selection and asset pricing to name but one connor 1984 studies arbitrage pricing in a general equilibrium model where there are no short sales restrictions the mean variance capm is of course very prominent in the finance literature because the

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

evaluating prior beliefs in a demand system the case of meat demand in canada an almost ideal demand system for meats is estimated using canadian data a bayesian approach is used to impose inequality restrictions on substitution elasticities via monte carlo integration and importance sampling in order to conform with prior beliefs about curvature and monotonicity restrictions and substitution relationships results are more consistent with the concavity and monotonicity restrictions from demand theory than with the added restriction that all meats are substitutes

some neglected social costs of government spending in farm programs economic welfare analyses of farm programs typically assume that the direct social opportunity cost of subsidy payments is one dollar per dollar of government spending recent literature suggests that the marginal opportunity cost of a dollar of u s federal government spending is more likely to be in the range of 1 20 to 1 50 this implies that the net social costs of farm programs that involve government spending are significantly greater than the typical estimates in addition the normative efficiency ranking of alternative policies is sensitive to the marginal opportunity cost of government spending

alcohol consumption during prohibition we estimate the consumption of alcohol during prohibition using mortality mental health and crime statistics we find that alcohol consumption fell sharply at the beginning of prohibition to approximately 30 percent of its pre prohibition level during the next several years however alcohol consumption increased sharply to about 60 70 percent of its pre prohibition level the level of consumption was virtually the same immediately after prohibition as during the latter part of prohibition although consumption increased to approximately its pre prohibition level during the subsequent decade this abstract was borrowed from another version of this item

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

an almost ideal demand system incorporating habits an analysis of expenditures on food and aggregate commodity groups breusch t s and a r pagan the lagrange multiplier test and its applications to model specification in econometrics the review of economic studies 47 jan 1980 239 254 eden benjamin the insurance buying gambler economic inquiry 18 july 1980 504 508 henderson charles f estimation of variance and covariance components biometrics 9 june 1953 226 252 hill daniel h deborah a ott lester d taylor and james m walker incentive payments in time of day electricity pricing experiments the arizona experiment this review 65 feb 1983 59 65 maddala g s and t d mount a comparative study of alternative estimators for variance components models used in econometric applications journal of the american statisticalassociation 68 june 1973 324 328 selby e b and w beranek sweepstakes contests analysis strategies and survey american economic review 71 mar 1981 189 195 spence michael and richard zeckhauser the effect of the timing of consumption decisions and the resolution of lotteries on the choice of lotteries econometrica 40 mar 1972 401 403 wallace thomas d and ashiq hussain the use of error components models in combining cross section with time series data econometrica 37 jan 1969 55 72 winett richard a and michael t nietzel behavioral ecology contingency management of consumer energy use american journal of community psychology 3 june 1975 123 133

international narcotics trade foreign aid and enforcement i introduction it is widely accepted that the problems that a country may face as a direct result of narcotics related activities are numerous 1 moreover drug production and trade are intimately tied to other serious international concerns notably the financing of insurgencies and terrorist activities shughart 2006 keefer loayza and soares 2008 intriligator 2010 piazza 2011 a prime example is the involvement of the taliban in afghanistan in the production and trafficking of heroin see blanchard 2009 clemens 2013a 2013b similar issues are observed in colombia and mexico hence the indirect costs of narcotics related activities are also substantial nonetheless the enforcement of prohibitions on the production consumption and movement of narcotics remains among the most controversial issues in international relations not least because the global response has met with somewhat limited success 2 even taking the objective of reducing global consumption of narcotics as given it is unclear which of the available policy tools are likely to be the most effective at meeting the objective the consumption and distribution in narcotics importing countries can be targeted directly although the history of the past one and a half centuries indicates that it is very difficult alternatively and more realistically the supply side can be targeted law enforcement authorities in narcotics exporting countries can be used to eradicate production facilities and to interdict trafficking and alternative production activities can be encouraged by providing technical assistance or by direct subsidization in all cases involving the supply side however it must be recognized that the global production of narcotics is concentrated in developing economies many of these countries lack the enforcement resources to engage effectively against well funded producers and well armed traffickers and their supporting terrorist and rebel groups therefore foreign aid to finance law enforcement activities is essential 3 alternative development policies may also be supported through foreign technical assistance or by directing foreign aid toward alternative production subsidies the effects of these policies on narcotics exporting economies have not however been adequately addressed in the literature our work adds a new dimension to the existing literature on the economics of narcotics 4 we construct a theoretical model that explores the effects of foreign financing of anti narcotics enforcement activities in narcotics producing exporting countries along with other potential policy interventions while previous literature has taken a partial equilibrium approach to analyzing related issues our work differs substantially in adopting general equilibrium methods as martin and symansky 2006 note opium production in afghanistan for example accounted for approximately 27 of economic activity in 2005 2006 given this fact substantial general equilibrium effects must be present and deserve full exploration we focus attention on the consequences of the multitude of severe distortions that narcotics production and enforcement introduce to factor markets we envisage an economy where workers engage in both licit and illicit activities are paid a premium for the risk of incarceration or seizure of their marginal product involved in the latter and a nonproductive law enforcement sector uses real resources to combat illicit activity our work draws on a number of strands of economic theory including tied aid factor market distortions dual economies illicit markets and law enforcement a number of important new results emerge from our analysis foreign aid will increase enforcement activity and will generally lower narcotics production the more market power the narcotics producing country has the less effective foreign aid will be however in fact aid intended for anti narcotics enforcement may effectively be siphoned into the wages of narcotics workers

maintaining and testing separability in demand systems we derive a general elasticity representation of the necessary and sufficient conditions for direct weak separability of the utility function parametric restrictions required to implement the separability conditions are presented for three common demand systems the almost ideal translog and rotterdam our empirical application uses the rotterdam model to test a few separable structures within a complete u s demand system emphasizing food commodities results based on size corrected likelihood ratio tests provide support for commonly used separability assumptions about food and meat demand

a historical institutionalist approach to the uruguay round agricultural negotiations the reduction of agricultural trade barriers accomplished at the close of the uruguay round ur of the general agreement on tariffs and trade is a puzzle because previous research has suggested that producer groups would always succeed in blocking liberalization efforts the author explains this apparent puzzle through the use of a comparative historical method developed by collier and collier for analyzing the ur as a critical juncture the analysis suggests that transformations in productive technology enabled producer groups to reap extraordinary economic and political rents during most of the post world war ii era however the fiscal crises of the 1980s provided governments an incentive to exert relative autonomy from producer groups and initiate bargaining over trade barriers as trade barriers and the political influence of producer groups were reduced the ur emerged as the product of a critical juncture in the transition from the fordist to the post fordist mode of agricultural accumulation

are there halo effects of us grain export promotion the objective of the research reported in this article is to examine both the own and cross effects of us export promotion for us and non us grains we focus on two previously neglected dimensions of the cross effects first we examine whether a halo effect i e promotion for one us commodity positively effects demand for another us commodity for us commodities exists second we look at whether us grain export promotion has public goods characteristics that is does us grain promotion have a halo effect on grain demand for other countries we use a linear approximation of an almost ideal demand system la aids model for us and non us rice wheat and sorghum that include us export promotion as one of the explanatory variables our goal is to provide further empirical evidence for the halo effect issue by using us grains as a case study since this sector has not been previously explored in addition to estimating own and cross export promotion elasticities the magnitude of cross effects on us market s

on inferring individual behaviour from market behaviour in a predetermined quantities model this article develops the theoretical basis of individual behaviour recovered from market behaviour in a predetermined quantities model as applied economists argue an inverse demand system may be empirically sound within the framework of classical demand theory however it should not lead to the conclusion that the market responses for changes in quantity should be used to see welfare effects instead of the individual responses by price changes as far as the market is concerned it shows theoretically and empirically how individual responses can be recovered from market responses in a predetermined quantities model it suggests that the fundamental results of this article should be used on interpreting empirical results from the predetermined quantities models

crop insurance in a political economy an alternative perspective on agricultural policy lawmakers often subsidize farmers in times of financial distress this article models this political impulse as a constraint on government farm policy describing how ex ante government farm insurance can deter ex post disaster relief and improve production incentives by countering the moral hazard that otherwise prevails absent ex ante government policy ex post relief takes the form of revenue insurance which prompts excessive entry into farm production and under production by operating farmers ex ante government policy can raise economic and political welfare by buying out low productivity farmers and offering profitable farmers a combination of revenue insurance price supports and a program participation fee copyright 2003 oxford university press

economic theory and farm politics what can economics offer in the explanation of politics the first accomplishment is to reduce the subject to a maximization problem analogous to others encountered in economic theory a second accomplishment is to make this problem interesting to make it really illuminating about politics both steps are difficult and the accomplishments have been only partial viewing politics as maximization may seem unreasonably austere and narrow but it is what distinguishes the contribution of economics from that of political scientists or more general social observers empirical work by economists on farm politics typically brings in these broader concerns but this paper attempts instead to justify the narrower approach and to explore its implications its organization is first to spell out details of the contribution of economic theory to explaining politics second to review work on agricultural policies in relation to this theory and finally to discuss implications for positive versus normative economics in policy analysis

estimating a demand system with nonnegativity constraints mexican meat demand a new information based approach for estimating systems of many equations with nonnegativity constraints is presented this approach called generalized maximum entropy gme is more practical and

market definition in antitrust analysis a regression based approach alleged violations of either sherman 2 s antimonopoly strictures or clayton 7 s proscriptions against anticompetitive mergers necessarily involve a particular product and must occur in a particular place that is the plaintiff in either a 2 or 7 suit must define a relevant market within which the violation alleged has occurred even in the most mundane antitrust analysis however market definition is rarely readily accomplished and unaccompanied by a series of caveats and the possibility of the opposing parties in an antitrust suit failing to contest each other s proffered definition is virtually nil 2 because economists from

demand for beef and chicken products separability and structural change several studies have indicated that the recent shift from beef to poultry in consumption is not entirely caused by changes in rela tive prices or income braschler chavas dahlgran hudson and vertin moschini and meilke frank thurman most studies of structural change have focused on red meat consumption only thurman has looked closely at the poultry market and no one has considered poultry products yet the mix of chicken products marketed changed dramat ically during the last twenty years and should have influenced aggregate meat demand the share of broiler slaughter marketed as whole birds declined from 74 in 1965 to 28 in 1985 while cut up parts and processed chick en products increased from 26 to 72 whole birds are inferior goods and cut up parts and processed chicken are normal goods haidacher et al the shift in chicken prod uct mix away from whole birds should have increased the preference for total chicken in this article two related questions are ad dressed first do consumers allocate expendi tures among meats by animal origin or by product type second does disaggregation of meat into products in a meat demand model give insight into the causes of structural

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

a political economic analysis of u s rice export programs to japan and south korea a game theoretic approach the uruguay round agreement on agriculture ur has contributed to the increase in u s and world rice trade since 1994 despite this the japanese and korean rice markets continue to be characterized by high levels of trade intervention this paper attempts to analyze both import markets incorporating econometric estimates and public choice theory in a game theoretic framework various scenarios are analyzed the results show that the overall nash equilibrium occurs with a 4 tariff reduction for japan and korea under the u s market development program which includes the market access program and foreign market development program

trade policy and the legalization of drugs a prominent suggestion in recent debate on the u s drug problem has been to legalize the use of drugs such as cocaine the debate about legalization however seems very polarized at one extreme opponents base their position on a fear that drug use would increase dramatically with consequent individual and social problems 3 13 14 at the other extreme proponents of legalization contemplate a never ending increasingly costly but inevitably futile war on drugs and see legalization as a means of both reducing the costs of policing and reducing the violence involved in the distribution of drugs legalizing cocaine would remove its profitable allure and this violent rent seeking behavior would diminish 5 there seems to be no middle ground in the debate between total prohibition and unregulated legalization an economist s solution would involve a compromise that trades off costs and benefits of legalization and taxation at the margin making the issue an empirical matter miron provides an excellent informal discussion of some of the economic issues involved 8 the public debate however and the u s position of zero tolerance clearly do not admit such tradeoffs accordingly the present paper focuses on legalization and taxation that purports to leave consumption unchanged from its prohibition levels a policy involving no tradeoffs between greater use and decreased enforcement

the inverse almost ideal demand system abstract a new demand system related to the almost ideal demand system aids of deaton and muellbauer is developed and illustrated this inverse aids iaids retains all of the desirable theoretical properties of the aids model with the exception of consistent aggregation an empirical issue is whether a linear approximation will work as well for the iaids as it has for the aids model since quantities are not as highly correlated as prices an application to u s meat demand demonstrates that the linear approximation of the iaids is excellent which enhanced the ease and range of application

an inverse demand analysis with introduction of quality effects an application to spanish consumption of fruit and vegetables this article analyzes consumer preference for fruit and vegetables when by using time series with socioeconomic characteristics of households there can be seemingly unobserved quality effects which are increased by aggregation the changes in spanish demand for fresh and processed fruit and vegetables over the period 1987 2000 are discussed following previous tests and analyses quantities are taken as predetermined and prices as matching the offer conditions thus quality effects based on the nutritional and or health value of the product are estimated from the error terms associated with the functions of the unit values quality variables are introduced as taste shifters in the inverse demand system laitinen theil model the results show the positive effects of quality differences on the normalized price for the group of products through own quality flexibilities and the negative effects between fresh and processed products through cross quality flexibilities

a critical assessment of the political preference function approach in agricultural economics abstract the policy preference function ppf approach has become popular with economists seeking to explain the origin of government policies in this paper a distinction between positive and normative work with the ppf concept is made positive work is shown to suffer from a variety of shortcomings including the misspecification of traditional ppfs and the failure to consider the importance of institutions constraints and the interaction between different commodity policies these weaknesses are reflected in the counter intuitive results of a simple ppf model designed to reflect the interaction between the ec s wheat and barley policies furthermore it is demonstrated that ppf weights change as a result of both political preferences and market parameters hence changes in ppf weights cannot be attributed to changes in preferences alone test of the axioms of revealed preference theory are used to demonstrate that even though ppf weights derived for the ec s wheat and barley markets have fluctuated considerably since the early 1970s we are not able to conclude that there has been a shift in political preferences the paper concludes with some comments about the use of ppfs in a normative framework the underlying assumption that policy makers optimise seems not surprisingly often to lead practitioners to the conclusion that observed policies are not so bad after all economists should also beware of the tendency to overlook possible differences between the ppf and the social welfare function

stochastic dominance pareto optimality and equilibrium asset pricing pricing a factor subspace contains the market portfolio and is such that every marketed contingent claim is second order stochastically dominated by a claim from the factor subspace conditions are given for the existence of equilibrium and it is shown how apt and capm can be interpreted in the framework of the paper if sufficiently many call options on the market portfolio are traded then the space spanned by these options can be used as the factor subspace we consider markets in which a collection of financial assets are traded the collection may be finite or infinite markets are frictionless and short sales of assets are permitted asset payoffs are random variables which are elements of a space of contingent claims by forming portfolios of the marketed assets payoffs in a certain linear subspace of the space of all contingent claims can be attained we call this subspace a space of marketed claims we say that a closed subspace of the space of marketed claims is a factor subspace if two conditions are satisfied first the market portfolio payoff i e the payoff of an aggregate endowment of portfolios per capita belongs to this subspace second every marketed contingent claim is dominated in the sense of second order stochastic dominance by some contingent claim in the factor subspace we demonstrate that for each asset market economy there is a well defined minimal factor subspace in the sense that no proper subspace of it can be a factor subspace if markets are complete i e if a full set of arrow securities are traded then the price of any given asset can be expressed in terms of prices of arrow securities or state prices breeden and litzenberger 1978 have shown that state prices can be replaced by the values of options thus in a complete market asset prices are determined either by state prices or call options it is established in this paper that these ideas and methods are applicable to asset pricing theories even when markets are incomplete making use of the argument of second order stochastic dominance we show that every constrained pareto optimal portfolio allocation consists exclusively of portfolios which generate the factor subspace the same holds for an equilibrium portfolio allocation thus for an economy with a factor subspace only a partial set of arrow securities which is large enough to generate the factor subspace is required to price assets this paper establishes that there exists an equilibrium in which the price of a portfolio equals the price of the dominating portfolio with the same expected return in the factor subspace since the dominating

economic welfare analysis of policy induced structural change in the indonesian poultry industry abstract the performance of the poultry industry in indonesia is analyzed in terms of changes in producer and consumer welfare as a result of public policy intended to limit the size of production units in order to distribute growth opportunities to smaller farms elasticities of supply and demand are estimated using the seemingly unrelated system of equations the hypothesis of a policy induced structural change estimated through a dummy variable accounting for a shift in supply associated with implementation of the policy shows a negative impact on the output supplied and the welfare of producers and consumers to the tune of about rp 94 billion or roughly about 0 1 of national income as of 1983 the study suggests an important trade off between more equitable income distribution and economic efficiency

estimating statistical properties of political economic decisions revelation of criteria implicit in setting policy is addressed in a political economic framework that includes identification and estimation of unknown parameters in the presence of multiple sources of uncertainty policy formation is viewed as an optimization process under which the government maximizes a criterion function subject to market constraints a method for estimating political criterion function weights and their associated standard errors over multiple time periods is presented the approach is illustrated with an empirical example from japanese rice and wheat trade policy

an error correction almost ideal demand system for meat in greece this paper represents a dynamic specification of the almost ideal demand system aids based on recent developments on cointegration techniques and error correction models based on greek meat consumption data over the period 1958 1993 it was found that the proposed formulation performs well on both theoretical and statistical grounds as the theoretical properties of homogeneity and symmetry are supported by the data and the lechatelier principle holds regardless of the time horizon beef and chicken may be considered as luxuries while mutton lamb and pork as necessities in the short run beef was found to have price elastic demand pork an almost unitary elasticity whereas mutton lamb chicken and sausages had inelastic demands in the long run beef and pork were found to have a demand elasticity greater than one whereas mutton lamb chicken and sausages still had inelastic demands all meat items are found to be substitutes to each other except chicken and mutton lamb and pork and chicken

paradoxical effects of drug policy in a model with imperfect competition and switching costs this paper presents a stylized model of the market for hard drugs we assume that there is imperfect competition that the demand side is dominated by addicts and that the presence of switching costs leads to consumer loyalty drug policies affect the values of the parameters of the model including the degree of consumer loyalty and the static price elasticity of demand taking into account these effects it is shown that tough policies may lead to an increase in the marketing activities by suppliers and cause a long run increase in the number of addicts and total consumption

overlapping risk adjusted sets of priors and the existence of efficient allocations and equilibria with short selling the theory of existence of equilibrium with short selling is reconsidered under risk and ambiguity modelled by risk averse variational preferences no arbitrage conditions are given in terms of risk adjusted priors a sufficient condition for existence of efficient allocations is the overlapping of the interiors of the risk adjusted sets of priors or the inexistence of mutually compatible trades with non negative expectation with respect to any risk adjusted prior these conditions are necessary when agents are not risk neutral at extreme levels of wealths it is shown that the more uncertainty averse or risk averse the agents the more likely are efficient allocations and equilibria to exist

renewable resource policy when distributional impacts matter the standard assumption in bioeconomic resource models is that optimal policies maximize the present value of economic surplus to society this assumption implies that regulatory agencies should not be concerned with the distributional consequences of management strategies both contemporary welfare theoretic and rent seeking approaches suggests distributional issues are important in designing resource management policies this paper explores resource management when the managing agency has preferences defined over the economic welfare of various groups with a direct economic interest in the use of resources policy schemes consistent with this approach are derived and compared with standard results

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

the microeconomics of the developmental paradox on the political economy of food price policy abstract a longstanding puzzle in comparative economics is the developmental paradox the tendency for government support for agriculture to increase with national income and to decrease with the proportion of economic activity and of the population in agriculture this paper offers a microeconomic explanation for that puzzle it establishes analytically the microeconomic basis for coalition alignments with respect to food price policy then numerically simulates the comparative static effects of alternative food policies on coalition structure a parsimonious household model applied to a heterogeneously endowed society demonstrates how variation in individual welfare effects might beget distinct coalitions in the debate over food price policy and how those policies are inextricably linked to land population and technology policies in food agriculture moreover coalition alignments on particular policy debates are path dependent in particular food price policy creates its own political support

least cost cheap food policies some implications of international food aid abstract many low income countries pursue cheap food policies in which consumers pay subsidized prices for bread rice and other staples this paper addresses the issue of why different governments select different food subsidy policies using multiple instruments rather than a simple across the board subsidy to provide consumers with access to cheap food it examines the optimal structure of cheap food policies in the context of a partial equilibrium model in which the country may be large in trade and is able to combine import subsidies or tariffs and output taxes or subsidies to transfer income to consumers through the market the model allows for a marginal opportunity cost of government revenues greater than one dollar in addition in the model food aid from overseas may be either given away to the consumer or given to the government for subsequent sale in the domestic market the results indicate that only by happenstance will a country choose to use a pure consumption subsidy or a pure import subsidy to transfer income to consumers in addition an increase in international food aid does not necessarily lead the government to reduce producer and consumer prices for a commodity

efficient redistribution using quotas and subsidies in the presence of misrepresentation and cheating this paper introduces misrepresentation and cheating into the policy analysis of output quotas and subsidies analytical results show that when cheating occurs output quotas are a less efficient means of income redistribution than is traditionally believed as well cheating increases the transfer efficiency of output subsidies the result is that an all or nothing choice between quotas and subsidies will generally favor the use of subsidies a combination of quotas and subsidies however usually remains the most efficient means of income redistribution through market intervention a key assumption in agricultural policy analysis is that farmers follow the provisions of the policy instruments in the manner desired by the policy maker or alternatively that it is costless to ensure that farmers do so in reality however farmers may be expected to act opportunistically when faced with an agricultural policy when a production quota is in effect farmers may cheat by overproducing and selling the above quota amount through alternative channels under an output subsidy scheme farmers may report and collect on a greater quantity of production than they actually produced the possibility of misrepresentation and cheating arises because it is costly to determine farmers actions because of this cost farmers are in a position to misrepresent their quantity of production and or to cheat very few studies have incorporated misrepresentation or cheating in theoretical agricultural policy analysis one exception is alston and smith who raise the question of cheating and black market activity in an examination of rationing in an industry with an effective minimum price policy in place studies that deal with farmer opportunism can also konstantinos giannakas is an assistant professor in the department of agricultural economics university of nebraska lincoln murray fulton is director centre for the study of co

the peculiar rationality of beef import quotas in japan in recent years economists have devoted considerable effort towards explaining why governments protect certain domestic industries from import competition anderson and baldwin so far however little attention has been directed at explaining the choice of protective policy instrument why for example are import quotas rather than less distortionary production subsidies or tariffs used an especially interesting case is provided by east asian beef protection policies import quotas in japan and south korea have ensured that beef prices in these countries are several times higher than import prices saxon and anderson anderson a major reason for protecting the beef sector is to boost domestic livestock producers incomes the first best policy instrument for achieving this objective namely income supplements is said to be politically impracticable because of its budgetary cost there is however a second best policy which may harm domestic consumers less than the present policy without reducing returns to beef producers or drawing on general tax revenue this policy involves replacing import quotas with a less restrictive tariff and or levy on imports and using the tariff levy revenue to subsidize the domestic producer price up to its present quota protected level such a change in beef import policy has been advocated for japan by a number of authors in recent years forum for policy innovation hayami longworth 1976 1978 hayami s analysis suggests that all parties would benefit from a partial trade liberalization of this sort if such a policy change is so beneficial why does japan continue with restrictive import quotas and why are other countries such as south korea following the japanese example in fact the recommended policy is to some extent already in place japan s beef imports are subject to a 25 tariff in addition the government monopoly importing agency imposes a levy on imports which is used in part to support feeder calf prices the question then becomes to what extent is further liberalization possible without reducing beef producer protection or drawing on treasury funds the theory section below shows that the answer depends on whether none some or all existing government programs being financed by rents from imports are assumed to continue the second section looks empirically at the likely extent to which consumer beef prices in japan could fall in each of these cases and at the effects of such reductions as compared with both the present situation and free trade in the light of these results the third section suggests a number of reasons for the persistence of quotas

the extent of the market examines the classical theory of the market in this paper authors consider the role of price market determination price movement in competitive and monopolistic markets extension of commodity markets

a test of prohibition s effect on alcohol production and consumption using crop yields the effect of alcohol prohibition in the united states has been the subject of continuing debate due to a lack of data one question that remains unanswered is the effect prohibition had on the actual production of alcohol this article attempts to answer this question by estimating prohibition s impact on the yields of grains that constitute the principal inputs in alcohol production using a variety of data sources and exploiting the variation in timing of state prohibition law adoption we estimate the effect of prohibition on several measures of crop production our preferred identification strategy compares contiguous counties in states with differing prohibition laws our findings suggest that state prohibition laws decreased the production of barley and may have increased the production of corn using these estimates we calculate that prohibition decreased alcohol production and by extension consumption by at least 18 gallons per adult per year

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

measuring the welfare effects of nutrition information cost benefit analysis justifies regulations altering the amount of health related information presented to consumers the current method of benefit analysis the cost of avoided illness is limited it assumes the benefits of health related information are adequately represented by changes in illnesses the manuscript develops a benefit estimation method to measure the welfare impacts of providing nutrient information nutrient labeling significantly affects purchase behaviour but may not lead to increased consumption of health foods nutrient labeling may increase welfare without any change in health risk thus the cost of avoided illness approach can underestimate the social benefits of providing nutrient information copyright 2001 oxford university press

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

space agriculture and organization economists discuss differences in capital intensity or labor intensity very often but they consider differences in space intensity only relatively rarely yet differences in the spatial intensity of economic activities are fully as important indeed i will argue here that the main features that distinguish farming from manufacturing and most other urban economic activity are due to differences in space intensity for some parts of my argument it might seem more familiar to use the phrase land intensity rather than space intensity but other parts of the argument hinge on transportation communication and surveillance costs that depend on the distance between points whether or not the land between these points is farmed thus the phrase land intensity would not be generally appropriate in this paper the difference in space intensity between most types of farming and most types of urban industry is obviously colossal in the united states farming accounts for decidedly less than 5 of the national income but farming at least if we define it broadly enough to include ranching and forestry uses decidedly more than 95 of the area that is used by the entire economy though there are a few types of farming such as huge feeding lot operations that are not space intensive and also some types of urban industry that are fairly space intensive these are clearly the exceptions it would be commonplace today to find farms of say more than 500 acres that would utilize only one or two or three workers and produce a total output valued at a few hundred thousand dollars it would also be easy to find factories that occupy less than five acres yet employ several thousands of workers and produce a total output valued in the tens or hundreds of millions of dollars thus farming activities easily can be many thousands of times as space intensive as many types of urban industry the generalization that most farming is vastly more space intensive than most urban industry appears to hold for all countries and historical periods in which meaningful urbanrural comparisions can be made we cannot explain some of the most important economic realities without taking account of these differences in space intensity and when we do take these differences into account a number of important puzzles can be solved one of these puzzles has been attracting attention for quite some time for example in 1945 t w schultz observed in agriculture in an unstable economy that agriculture and industry tended to react quite differently to general economic fluctuations schultz noted that the prices of farm products reflect quickly a bullish or bearish turn p 131 but the prices of nonfarm products generally do not conversely the quantity of agricultural output in the aggregate responds slowly or not at all to the changes in economic expectations associated with business fluctuations p 131 whereas the output of industry is highly responsive to changes in economic expectations with production rising sharply when the outlook turns bright and falling abruptly when it becomes gloomy p 131 this observation was not so far as i know very controversial for many other economists had observed exactly the same thing and the pattern in the data is quite clear the data schultz presented showed that industrial production in the united states fell by nearly half between 1929 and 1932 whereas agricultural production fell by little more than 3 over the same period the prices received by farmers fell by more than one half whereas the prices farmers paid fell by only about a fifth schultz 1945 tables 15 and 16 the statistics probably understate the reduction in industrial prices to some extent because of secret discounting and possible changes in mancur olson is a professor of economics university of maryland

a critical assessment of the political preference function approach in agricultural economics the political preference function ppf approach has been used often in the agricultural economics literature in attempts to explain the causes of farm policy the fundamental assumption of ppf studies is that government selects levels of policy instruments such that it maximizes a function of interest groups welfare measures for the purpose of acquiring maximum political support ppf studies often use the familiar neoclassical constrained maximization problem to measure relative political powers of interest groups involved in policy determination some weaknesses of the ppf approach have been discussed in the literature gardner 1989 alston and carter 1991 and von cramontaubadel vct 1992 while each of these critiques provides valuable insight into ppf methodology and its limitations none of them clearly explains the simple fundamental structure of the ppf framework this neglect of certain fundamentals has led to confusion in the litera

structure of agricultural protection in industrial countries abstract the nominal rates of agricultural protection in ten industrial countries from 1955 to 1980 are estimated with the same commodity coverage and data definitions a regression analysis is conducted to explain variations in the measured level of agricultural protection in terms of political as well as economic factors nearly 80 percent of the variations is accounted for by differences in agriculture s comparative advantage agriculture s share in total economy the international terms of trade between agricultural and manufactured commodities regionalism eec and food security consideration associated with non military alliance

testing restrictions on a model of japanese meat demand tests for quasi separability net substitutability and perfect substitutability are developed and implemented on an almost ideal demand system model of the japanese meat sector the data set satisfies both symmetry and homogeneity there is evidence of net complimentarity between chicken and dairy beef and chicken and pork the tests indicate that japanese wagyu beef is considered a separate commodity to both imported beef and dairy beef the results also indicate that fish can be treated as separable in the japanese meat demand system

structure of public support for national agricultural research systems a political economy perspective abstract this paper initiates development of a set of stylized facts concerning the structure of public support for national agricultural research systems nars within a neoclassical political economy framework the aim is to place public funding of nars in the broader context of the overall level of direct government assistance to agriculture using a newly constructed data set on nars expenditures over the 1970 1985 period we observe a growing disparity in agricultural research intensity ratios which measure the level of public support for nars in relation to agricultural gross domestic production aggdp between low and high income countries this growing disparity appears to be driven by much larger increases in support for agricultural research by high income countries coupled with a significantly slower growth in the size of their agricultural sector despite the propensity of low and middle income countries to increase real support to agricultural research as per capita incomes rise the public agricultural expenditure ratio which measures public expenditures on agriculture relative to the size of the agricultural sector aggdp increases substantially public expenditures on agriculture were indexed on agricultural and non agricultural populations to give a rough indication of the increasing incentives for rural distributional coalitions to seek a redistribution of public expenditures in their favor a relative research expenditure rre ratio is developed which measures the proportion of total public expenditure on agriculture spent on agricultural research it provides an indication of the relative importance given to research on agriculture within the constraints imposed by overall public spending on agriculture in contrast to the agricultural research intensity ratios the rre ratios suggest that agricultural research appears to command as large a share of the public purse devoted to agriculture in low and middle income countries as it does in high income countries expectations derived from the neoclassical political economy literature that research may have fared relatively better in high compared with low income countries were not supported by the data

on equilibrium in hart s securities exchange model in this paper we use a no unbounded arbitrage condition to give a very direct proof of the existence of equilibrium in hart s unbounded securities exchange model j econ theory 9 1974 293 311 we also examine the relationship between the no unbounded arbitrage condition and the sufficiency conditions of hart ibid and hammond j econ theory 31 1983 170 175 we present an example to show that if traders are not sufficiently risk averse then hammond s overlapping expectations condition is not in general equivalent to the no unbounded arbitrage condition or hart s sufficiency conditions and therefore is not sufficient to guarantee the existence of equilibrium we also present an example to show that it is possible for the no unbounded arbitrage condition to hold without overlapping expectations and therefore it is possible for equilibrium to exist without overlapping expectations

testing restrictions in a flexible dynamic demand system an application to consumers expenditure in canada traditionally restrictions on systems of demand equations have been tested using static models whilst being estimated with time series data this paper develops a vector time series model of expenditure shares in the context of a singular dynamic demand system the model allows for non symmetric and non homogeneous short run behaviour the homogeneity and symmetry restrictions are only examined in the long run structure results based on canadian time series data are presented and reject the current practise of static modelling while restrictions suggested by economic theory are not rejected when imposed on the long run structure

taxing incumbent monopoly to foster entry abstract this paper investigates whether it is welfare enhancing to tax the output of a monopoly in order to foster cost inefficient entry this question is of particular concern in the energy markets dominated by cartel like affiliations opec and oil russia s gas exports to europe and the interest and practice to stimulate the development of alternative fuels making the realistic assumption that none of the players can commit to future policies subsidies are not a viable strategy for the government a tax cannot be first best but can be second best if the government cannot force the incumbent monopoly to sell its output at no profit and if the incumbent s profit is discounted however stimulating supply by improving the conditions for entry is not the prime concern of taxation after all it lowers aggregate supplies and may even lower the entrant s supply but to accrue parts of the monopoly rent

multilateral trade negotiations european integration and farm policy reform trade negotiations and farm policy kym anderson why was it so hard to reach an agreement in the uruguay round to reduce agricultural protection after surveying the growth of agricultural protection in the 1980s i develop arguments based on political economy that imply a systematic tendency for governments to protect farmers increasingly at least up to some threshold as economic development proceeds agricultural protection growth in industrializing countries is therefore normal not exceptional liberalizing those policies before reaching that threshold is unattractive politically unless new influences e g from abroad upset the domestic political equilibrium the uruguay round provided such a force what made the early 1990s so significant a crossroads for farm policy reform was that coincidently there were other changes taking place in europe which lowered the domestic political cost of reforming the ec s common agricultural policy the paper argues that the reforms to farm policy during the rest of this decade as a result of the uruguay round agreement will at best be slow and messy but that is far preferable to the alternative of a failed uruguay round and continued growth of agricultural protection

international capital markets and interest groups capital market integration has increased the scale and mobility of capital movements within and among nations to unprecedented levels integration is fairly recent frankel concludes from his review of the literature that barriers in the major world financial markets were sufficiently low that by 1989 financial markets could be viewed as being fully integrated the scale and mobility of capital flows among nations has numerous implications to currency values interest rates wealth and through current capital account linkages to relative product and factor prices capital flows that have real economic effects also affect the functioning of policy instruments and how effective they are in remunerating an interest group at the expense if any of others this paper provides insights into the process and linkages by which the integration of capital markets has altered economic policy through interest group pressures on government if economic policy is viewed as the outcome of interest groups seeking through the power of the state that which cannot be provided by the market alone then capital market adjustments that affect the return to policy instruments can also affect the returns to lobbying resources and hence the balance of political influence among the various groups 2 this type of explanation for economic policy has been forwarded under the rubric of models of rent seeking krueger 1974 3 the paper is organized as follows 4 selected historical evidence linking capital markets to pressures for legislation in the united states and other countries is briefly reviewed in some cases capital market adjustments have eased pressures for protection while in other cases adjustments either forced policy change because of a liquidity constraint or made unprofitable the lobbying for sustaining policy in face of these adjustments the discussion in the next section provides deeper insight into capital market lobbying linkages discussion focuses on the results from a simple model of rent seeking where government intervenes in markets and provides sector specific public goods

market integration efficiency of arbitrage and imperfect competition methodology and application to u s celery this paper develops and applies a methodology to test for efficiency of interregional commodity arbitrage application of the methodology requires only time series data on prices for alternative cities regions countries or product forms yet the approach is capable of generating evidence on a number of market parameters including market integration arbitrage efficiency the magnitude of marketing margins product substitutability and competitiveness of markets estimation is based on a switching regression model with three regimes efficient arbitrage relative shortage and relative glut results from application of the model to u s celery marketing indicated significant departures from efficient arbitrage for both california and florida celery

comparing heterogeneous consumption in u s and japanese meat and fish demand this article uses national quarterly data to conduct an empirical analysis of pre committed meat and fish demand by u s and japanese households using the generalized almost ideal demand system gaids pre committed demand represents the component of demand that is insensitive to both income and price adjustments u s consumers are found to hold significant positive pre committed demand for beef and pork while japanese consumers appear to possess significant positive pre committed demand for beef and fish this provides evidence to partially explain observed differences in japanese and u s consumer reactions to nonprice and nonincome effects in beef pork poultry and fish in addition based on inand out of sample performance the more general gaids is preferred to the almost ideal demand system aids for both the u s and japanese demand systems results lend to improved demand modeling efforts and more complete understanding of true market forces at hand in meat and fish markets for these culturally diverse consumer groups

on the different notions of arbitrage and existence of equilibrium in this paper we first prove an equilibrium existence theorem for finite dimensional economies with unbounded below consumption sets we only assume that the individually rational utility set is compact and use the demand approach instead of the standard negishi s approach we next compare the different concepts of no arbitrage that have been used in the literature and give conditions for equivalence between absence of arbitrage and existence of equilibrium lastly we introduce the concept of strong unbounded arbitrage and show that the absence of strong unbounded arbitrage implies the compactness of the individually rational utility set journal of economic literature classification numbers c62 d50

incorporating nutrients into meat demand analysis using household budgets data the objective of this article is to analyze the spanish demand for meat taking into account the consumer s concern about the relationship between food diet and health this concern is forcing food demand analysts to assume that consumer utility is a function of nutrients instead of simply the food products themselves nevertheless these utility function arguments are not produced in the marketplace but rather at home as a consequence in this article household production theory is followed in order to analyze spanish demand for meat using the quarterly national expenditure survey for 1999 demands for several meat products the input in the model are derived from the translog cost function censored regression models are used in the estimation process since many zero responses are reported five broad categories eight nutrients and the most relevant socioeconomic variables are considered finally a set of elasticities is calculated with respect to all the variables included in the analysis

using elasticities from an almost ideal demand system watch out for group expenditure group expenditure has often been treated as exogenous when estimating demand parameters for a group of commodities with an almost ideal demand system researchers draw demand elasticities from past literature to use in their own analysis but elasticities contingent on exogenous group expenditure may be inappropriate here the approach is considered in the case of japanese meat demand with a simple equation added to estimate group expenditures the results show that elasticities should be revised and that a group expenditure equation is not a panacea as it may result in the violation of theoretical restrictions such as symmetry

the partnered core of an economy and the partnered competitive equilibrium abstract an allocation is partnered if it admits no asymmetric dependencies between players we introduce the partnered core of an economy and the partnered competitive equilibrium in an economy with unbounded consumption sets and local non satiation we show that no unbounded arbitrage is sufficient for non emptiness of the partnered core with strictly concave utility functions we obtain a second welfare theorem for the partnered competitive equilibrium and show that no unbounded arbitrage is necessary and sufficient for non emptiness of the partnered core and the existence of a partnered competitive equilibrium

growth of agricultural protection in east asia abstract japan is well known for its restrictions on food imports less well known is the fact that south korea and taiwan are also protective of their agricultural sectors this protectionism began early this century when all three countries were part of the japanese empire and it has increased rapidly during the 1960s and 1970s today food prices in east asia average two or three times higher than in international markets reflecting levels of protection that rival those in western europe