convergence to the law of one price without trade barriers or currency fluctuations using a panel of 51 prices from 48 cities in the united states we provide an upper bound estimate of the rate of convergence to purchasing power parity we find convergence rates substantially higher than typically found in cross country data we investigate some potentially serious biases induced by i i d measurement errors in the data and find our estimates to be robust to these potential biases we also present evidence that convergence occurs faster for larger price differences finally we find that rates of convergence are slower for cities farther apart however our estimates suggest that distance alone can only account for a small portion of the much slower convergence rates across national borders

spatial sustainability trade and indicators an evaluation of the ecological footprint the search for frameworks and indicators of sustainable development has taken a prominent place in this journal however some specific aspects have received little or no attention notably the spatial dimension and the role of international trade in indicator development moreover many sustainable development indicators comprise implicit valuations weighting schemes and policy objectives which are insufficiently recognised as such this contribution tries to highlight these issues by means of a review of a recently proposed indicator for ecological economic analysis namely the ecological footprint that has been developed by wackernagel and rees its concept and calculation procedure are criticised on a number of points and it is concluded that the ecological footprint is not the comprehensive and transparent planning tool as is often assumed in explaining our position we will argue that spatial sustainability and regional sustainable development have not been precisely discussed so far neither in the literature on trade and environment nor in that on sustainable development we will defend the view that trade can contribute positively and negatively to environmental unsustainability consequently indicators and models are needed that allow for analysing interactions and trade offs between such opposite effects 1999 elsevier science b v all rights reserved

spatial cost benefit thinking in multi functional forestry towards a framework for spatial targeting of policy interventions abstract many countries now actively encourage land use change for the provision of multiple benefits specifically including non market benefits often such policies have been poorly designed because of a lack of understanding of the spatial distribution of the potential costs and especially non market benefits from land use change as with market goods the potential yield of non market goods and services from land use can be highly spatially variable in recent years more and more studies on the economic aspects of natural resources have started to make use of geographical information systems gis what is yet lacking is the systematic adoption of a framework for the spatial targeting of policy interventions which can be used to improve decision making in terms of effectiveness efficiency equity or public acceptability this paper uses existing studies in forestry to present such a framework and discusses its potential uses and limitations as a new standard tool to inform multi functional land use decisions

linking agricultural policies with obesity and noncommunicable diseases a new perspective for a globalising world abstract in light of the shift in policy paradigm in agriculture from state intervention to market liberalisation and globalisation this paper develops a series of hypotheses on the relationship between agricultural policies and consumer diets the first hypothesis is that the paradigm shift has led to greater specialisation of production so changing the ability and incentive for producers to supply certain foods relative to others second the shift has affected farmgate prices both up and down so creating opportunities for the industries which purchase farm commodities the food consuming industries fcis to substitute lower priced ingredients thereby influencing the nutritional quality and content of foods available in the marketplace third it has increased the ability of the fcis to add value through product innovation and marketing creating a market characterised by highly differentiated products targeted to individualised preferences thus increasing the acceptability of a wider variety and quantity of food products the changing agricultural policy paradigm has therefore altered the environment in which consumers make their food choices in the form of food availability affordability and acceptability nevertheless the paper finds no clear pattern when it comes to health the changes have affected both unhealthy and healthy foods and ingredients the key process of importance for health then is not whether the ingredients produced by agriculture are healthy or not but how they are substituted transformed distributed and marketed through the supply chain e g vegetable oils into transfats this leads to an important implication that policies to intervene directly in agricultural production to promote healthy eating are unlikely to be effective or efficient if they do not take into account how foods are processed distributed and marketed through the supply chain in practice this means that the potential for policy interventions in agriculture to improve diets is limited but nevertheless potentially important where it exists given the upstream nature of the change incentives could be created for the fcis to substitute healthier ingredients in their products and or to sell more of them in instances where these changes can be passed all the way to the consumer greater investment could also be made in fruit and vegetable production for local markets along with testing the hypotheses established in this paper the research priority should to identify the incentives that influence the products produced by the fcis with the objective of finding those most amenable to leveraging the supply chain towards healthier eating

policy rivalry among industrial states what can we learn from models of strategic trade policy the economic theory of international trade has changed dramatically over the last decade by admitting into its mainstream a body of literature that focuses on the implications of monopolistic and oligopolistic elements in international markets by applying the tools of the new industrial organization in an international context two new classes of models have emerged models of intra industry trade and models of strategic trade policy the policy implications of models of strategic trade policy were quite disturbing for the economics profession since these models demonstrated that the classical harmony between national and cosmopolitan welfare maximization does not exist if one assumes opportunities for strategic manipulation of oligopolistic international industries this article reviews two prominent models of strategic trade policy the brander spencer model and the krugman model and relates them to more familiar earlier concepts such as stackelberg s asymmetrical duopoly solution and the venerable infant industry argument for government intervention the primary purpose of this article however is to provide a synopsis of the large literature addressing the question of whether models of strategic trade policy can give guidance for government policy

sense of place geographic discounting by people animals and plants abstract people animals and plants seem to consistently prefer to distance themselves from objects they fear and draw close to things that they desire i present an argument for ecologists and economists which allows them to capture this behavior in a simple way i offer some evidence for how such behavior occurs and how to include it in specific formulation of environmental policy models

a framework for scaling and framing policy problems in sustainability abstract it is argued that a necessary but lacking component of our approach in seeking policy responses to sustainability issues is some repeatable means whereby the relative magnitude and characteristics of these various policy problems faced in a given context can be analysed and described to this end a simple and tentative framework is constructed based on the definition of the key attributes which shape policy problems pertaining to environmental change these are spatial scale of cause and effect magnitude timing and longevity of possible impacts reversibility mensurability complexity and connectivity nature of cause s relevance to the given polity tractability availability and acceptability of means public concern and existence of goals these attributes inform a general taxonomy of micro meso and macro problems the attributes and the taxonomy are described with supporting examples to illustrate possible application of the framework it is discussed briefly in the contexts of operationalising the precautionary principle and policy instrument choice it is concluded that the framework can help focus debate and operationalise vague principles introduce relativity into the notion of sustainability and make policy choice more efficient

farm subsidies and obesity in the united states national evidence and international comparisons abstract many commentators have claimed that farm subsidies have contributed significantly to the obesity epidemic by making fattening foods relatively cheap and abundant but u s farm policies have generally small and mixed effects on farm commodity prices which in turn have even smaller and still mixed effects on the relative prices of more and less fattening foods other factors have had much more influence on reducing the farm prices of food commodities and the consumer prices of food such that any effects of u s farm policies on u s obesity patterns must have been negligible moreover while many arguments can be made for changing u s farm subsidies even entirely eliminating the current programs could not be expected to have a significant influence on obesity rates international evidence reinforces this finding the countries that support their farmers most strongly tend to have relatively low obesity rates in these countries the main support for farmers comes through trade barriers and higher consumer prices which like u s policies for sugar dairy orange juice and beef discourage consumption and reduce obesity in contrast with agricultural subsidies agricultural r d has had a significant effect in the past on the relative price of food commodities and food and has the potential to influence obesity patterns in the future but r d policy is a very blunt instrument for pursuing public health policy objectives

tariff policy for a monopolist in a signaling game abstract we examine the incentives for a government to levy an optimal tariff on a foreign monopolist with unknown costs with complete information the home government uses a discriminatory tariffs policy to extract rents if the government is incompletely informed about costs we show that under reasonable conditions the unique equilibrium involves pooling where the firm exports the same quantity regardless of its efficiency we find that in general home welfare is higher under alternative policies such as uniform tariffs or free trade suggesting that trade policies that are motivated by rent extraction are unlikely to be robust to the introduction of incomplete information

incentive compatible trade policies a two country trade model with production uncertainty is considered if complete contingent markets do not exist it is desirable for governments to adopt some trade policies to share the production risk a full information policy involves incomes transfers across countries which can be achieved by equal import tariffs and export subsidies with incomplete information we consider incentive compatible trade policies which are designed to be truth revealing while partially sharing the production risk in this case the tariff in one country may differ from the export subsidy abroad

trade policy with increasing returns and imperfect competition contradictory results from competing assumptions abstract a number of recent papers derive different results about the effects of trade and industrial policy on imperfectly competitive industries this paper sets out a single model within which policy under different market structures can be examined we consider the four types of market structure generated by oligopoly versus free entry and segmented markets versus integrated markets we conclude that the effects of policy are greater when markets are segmented than when they are integrated and that if transport costs are small policy is more potent when the number of firms is fixed than when there is free entry

food and consumer behavior why the details matter a growing body of literature now demonstrates the importance of behavioral factors in individual food consumption however whether addressing hunger nutrition or obesity food policies are often created to target changes at the aggregate level these policies ignore such behavioral tools or effects and their potential heterogeneous effects on consumers in this article we review the most important results examining food consumption and behavioral economics and provide a thorough discussion of how such tools are now being added to the lexicon of effective policy tools in addition we discuss how traditional policy tools that ignore the individual behavioral effects can miss the mark or even backfire the implication is clear a thorough understanding of behavioral economics is necessary to create efficient food policy

scale and topology in the ecological economics sustainability paradigm abstract an ecologically sustainable scale of the economic system requires inclusion of spatial temporal dimensions and topological relationships while herman e daly and marcus stewen have deliberated some of the issues surrounding economic scale in their papers allocation distribution and scale towards an economics that is efficient just and sustainable ecol econ 6 1992 185 the interdependence of allocation distribution scale and stability a comment on herman e daly s vision of an economics that is efficient just and sustainable ecol econ 27 1998 119 and letters to the editor ecol econ 30 1999 1 ecol econ 30 1999 2 they do not address spatio temporal constraints on ecological processes although daly frames the scale of the economy based on sustainable throughput of resources relative to the environment the pragmatic approach to defining this sustainable scale must incorporate other dimensions of scale while daly ecol econ 6 1992 185 ecol econ 30 1999 1 correctly promotes a logical sequence of policy instruments scale should indeed elicit dependence from allocation and distribution decisions stewen s ecol econ 27 1998 119 ecol econ 30 1999 2 arguments included that these instruments have co evolutionary interdependencies but such arguments do not guarantee economic nor ecological sustainability a more useful definition of sustainable economic scale includes spatial and temporal dimensions scale constraints and topological relationships as they are framed by ecological components and processes the spatial scale of the global economy is large but temporally the global economy is diminutive two characteristics that typically define catastrophic events in ecological parlance using a spatio temporal framework daly s boat analogy can be extended to real world linkages and possible solutions through supplementing the current view of economic scale with spatio temporal distance and topology

effect of distance on the preservation value of water quality in the past dozen years an extensive body of literature has developed on the willingness to pay for water quality in particular its recreation use and nonuse preservation values this paper illustrates a procedure for estimating the effect of distance on the preservation value of environmental quality using the contingent valuation approach the case considered is the potential degradation of water quality due to coal mining activity in the flathead river drainage system montana the analysis supports a negative association for this particular study area the effect of distance on preservation value was considered both directly and indirectly through its effect on visits 36 references 2 tables

uncertainty arbitrage and intra industry trade when rms in the same industry located in dierent regions or countries expe rience shocks to production costs in their respective industries that are imperfectly correlated arbitrage opportunities automatically lead to trade trade can either stabilize or destabilize the price faced by producers in a given country producers surplus is aected due to the variance covariance eect while consumers surplus is more directly aected through the variance of the product price the paper ex amines how consumers surplus producers surplus and social welfare are aected when the regions switch from autarky to free trade in the presence of industry and region speci c cost shocks contrary to anderson et al 1989 and moner colonques 1998 under cournot competition when the industries are symmetric in the two regions producers surplus can increase in both regions in the switch from autarky to trade in general depending on the variance of the cost shocks in the two regions the correlation coe cient between the shocks and the number of rms producers and consumers surplus in a given country can be either higher or lower under trade compared to autarky however social welfare is higher in both regions under a surprisingly robust set of conditions contrary to traditional trade theory the gain in social welfare in several situations is due to the gains in producers surplus osetting the loss in consumers surplus

economic factors affecting the increase in obesity in the united states differential response to price abstract a sharp increase in obesity during the last 15 years in the united states became one of the nation s main public health problems the theory of rational addiction seems to explain human behavior in food consumption leading to obesity reasonably well the interesting thing about our results is that the tax policy normally used to correct various distortions is to serve in this case as the preventive policy additional taxes on future prices of the addictive sweet foods contribute to lower sugar consumption and bmi at present time on the other hand increasing education level is usually considered a preventive type of policy in this case it leads to lowering the levels of the bmi in already overweight and obese population

the effect of distance on willingness to pay values a case study of wetlands and salmon in california most contingent valuation studies in the literature utilized a pre determined geographic market area for their sample frame in other words they did not include variables that would measure the extent of the geographic areas over which to aggregate willingness to pay these studies implicitly assumed that the effects of geographic distance were moot an assumption that could have led to an understatement of the aggregate benefit values computed in these studies the overall goal of this study was to determine if distance affects willingness to pay for public goods with large non use values the data used came from a contingent valuation study regarding the san joaquin valley ca respondents were asked about their willingness to pay wtp for three proposed programs designed to reduce various environmental problems in the valley a logit model was used to examine the effects of geographic distance on respondents willingness to pay for each of the three programs results indicate that distance affected wtp for two of the three programs wetlands habitat and wildlife and the wildlife contamination control programs we calculate the underestimate in benefits if the geographic extent of the public good market is arbitrarily limited to one political jurisdiction

the effects of farm commodity and retail food policies on obesity and economic welfare in the united states many commentators claim that farm subsidies have contributed significantly to the obesity epidemic by making fattening foods relatively cheap and abundant and symmetrically that taxing unhealthy commodities or subsidizing healthy commodities would contribute to reducing obesity rates in this article we use an equilibrium displacement model to estimate and compare the economic welfare effects from a range of hypothetical farm commodity and retail food policies as alternative mechanisms for encouraging consumption of healthy food or discouraging consumption of unhealthy food or both we find that compared with retail taxes on fat sugar or all food or subsidies on fruits and vegetables at the farm or retail levels a tax on calories would be the most efficient obesity policy a tax on calories would have the lowest deadweight loss per pound of fat reduction in average adult weight and would yield a net social gain once the impact on public health care expenditures is considered

exchange of cost information in oligopoly when do oligopolists gain by sharing their private information about their costs with one another what are the social welfare effects of such information exchange i study these questions by comparing the oligopolists expected profits under a cost sharing agreement with their expected profits in the bayesian equilibrium that would arise without cost sharing i also analyse the firms decisions to form a trade association to share their cost data under conditions of linear demand and cournot behaviour industrywide information exchange is the unique point in the core of the trade association membership game the exchange of cost data increases expected profits and welfare but reduces expected consumer surplus cost sharing increases efficiency by raising the market shares of lower cost firms and reducing the variability of aggregate output consumer surplus is diminished however because the variance of output is reduced and consumer surplus is a convex function of output

fdi policies under shared factor markets abstract we examine the consequences of foreign direct investment fdi policies in a general equilibrium setting with several oligopolistic industries by shifting labor demand across countries fdi raises the wage in the host country and lowers the wage in the source country thereby raising profits of source country firms at the expense of host country firms the extent of cross ownership of firms the relative number of firms and the relative supply of skilled labor alter the impact of fdi policy on national welfare the tension between profits and wages determines whether the optimal policy is designed to encourage fdi

five a day a price to pay an evaluation of the uk program impact accounting for market forces we provide an ex post assessment of the uk 5 a day information campaign where the positive effects of information are disentangled from potentially conflicting price dynamics using 4 years of data from the expenditure and food survey between 2002 and 2006 we estimate that the 5 a day program has lifted fruit and vegetable consumption by 0 3 portions on average we also provide quantitative evidence of a differentiated impact by income group ranging from 0 2 to 0 7 portions all impacts are larger than those observed by simply comparing pre policy and post policy intakes

the signaling effect of emission taxes under international duopoly we analyze equilibrium emission taxes under international cournot duopoly in the presence of asymmetric information between firms when each firm does not know the production cost of its rival located in the other country the government of each country can use its emission tax as a signal of the competitiveness of its domestic firm we show that owing to this signaling effect the equilibrium emission tax and expected welfare of each country can be higher than those under symmetric information between firms or even higher than those obtained if the governments were to non strategically set the tax rate equal to the expected marginal damage from pollution i e the pigouvian tax level our results suggest that the presence of asymmetric information between firms can mitigate a race to the bottom in strategic environmental policymaking

government intervention in production and incentives theory a review of recent contributions national science foundation the commissariat general du plan and the center for energy policy research at m i t

international dimensions of obesity and overweight related problems an economics perspective obesity is a growing concern new world health organization who figures indicate that obesity is spreading around the world as a global epidemic according to the who there are more people suffering from overweight related problems than malnutrition globally there are more than 1 billion adults who are overweight and at least 300 million of them are clinically obese while 800 million suffer from malnutrition who 2004 the economic costs due to obesity can be burdensome currently in the united states medical costs associated with obesity and smoking account for about 9 each of all health expenditures finkelstein fiebelkorn and wang u s obesity attributable medical expenditures reached 75 billion in 2003 obesity however is important not only from an economic perspective but also from a social perspective the social consequences of obesity are serious and multiple studies have shown that obesity affects in a negative and statistically significant way personal and working relations earnings and wages particularly for females cawley overall obesity is a complex phenomenon several recent economic studies have explored the role of different cultural and sociodemographic factors on obesity rates leaving genetics aside obesity is caused by the consumption of too many calories and or low expenditures of calories i e low physical activity consequently most published economic research provided a justification for the increased growth of obesity rates by analyzing several factors that may contribute to this imbalance of caloric consumption and usage see chou grossman and saffer cutler glaeser and shapiro lakdawalla and philipson philipson and posner there are mainly two arguments that could justify the growth of overweight problems around the world some researchers argue that obesity growth is mainly due to a higher intake of calories while others state that obesity is mainly caused by a lower expenditure of caloies in daily activities in line with the calorie consumption argument cutler glaeser and shapiro stated that americans have become more obese over the past twenty five years primarily due to the consumption of more calories analyzing changes in food consumption between the mid 1970s and the mid 1990s for

an incentive compatible approach to the transfer pricing problem abstract this paper offers an alternative approach to regulating certain types of transfer pricing if the multinational enterprise s transfer price decision is not regulated it will manipulate the transfer price in order to maximize net global profit traditional approaches argue for ad hoc penalty schedules to mitigate manipulative transfer pricing in contrast this paper offers an incentive compatible approach which explicitly incorporates the informational asymmetries that encourage misreports the model has the desirous feature that the optimal regulatory policy has self enforcing properties that is the firm will find it profit maximizing to report true costs

non users willingness to pay for a national park an application and critique of the contingent valuation method bateman i j and langford i h 1997 non users willingness to pay for a national park an application and critique of the contingent valuation method reg studies 31 571 582 a great deal of the ongoing academic debate concerning the contingent valuation cv method has focused upon whether or not the method is suitable for assessing non use values this paper presents results from a study examining non users values for preserving the norfolk broads a wetland area of recognized international importance from the threat of saline flooding discussion of results centres upon the validity of the cv method for eliciting unbiased estimates of non use value a graphical representation of findings from a variety of studies is presented to suggest that such results are logically ordered across goods and valuation scenarios however as the paper concludes logicality and validity are not necessarily synonymous bateman i j et langford i h 1997 la volonte des non usagers de payer les parcs nationaux

optimal strategic trade policy under asymmetric information abstract when cost is private information in the brander spencer model the home government is confronted by a decision of choosing between two policy options a menu of policies and a uniform policy the former induces separation and so reveals the cost information to the foreign competitors the latter helps the weak firm by concealing the cost information the main result from this study is that policy menu is preferred to uniform policy under cournot competition while the opposite occurs under bertrand competition

cost uncertainty and trade liberalization in international oligopoly abstract trade liberalization has been shown to be unfavourable for firms of at least one country for the homogeneous goods case in an environment of certainty we show that in the presence of private cost information and for ex ante identical firms oligopolistic firms will prefer to operate under free trade rather than under autarky in homogeneous goods industries provided there exists a certain degree of firms heterogeneity and a sufficiently large amount of uncertainty for the particular case of symmetry both in demand and industry sizes the firms of at least one country prefer to operate under autarky rather than under free trade

a rotten deal for schools an assessment of states success with the national school lunch program s in kind food benefit the national school lunch program nslp is one of the united states largest domestic food aid programs the nslp provides states with both cash and commodity foods for school meals this research assessed the success of the school commodity program by comparing states available annual funding to the value of foods that states actually received from 2001 to 2009 results indicate that an in kind food funding system is not desirable for schools states failed to receive entitled commodity food value in most years resulting in annual funding losses for schools of 35 87 million inconsistent funding inhibits schools ability to improve meals and ultimately child nutrition outcomes in light of these results it is recommended that a cash benefit should replace the national school lunch program s commodity food program

spatial and temporal efficiency in climate policy applications of fund fund is an integrated assessment model of the interactions between climate and economy nine world regions emit greenhouse gases and suffer damages from climate change a number of greenhouse gas emission reduction policies are compared including optimal and cost effective strategies strategies with early and late abatement and strategies with and without international co operation the analyses confirm that co operation matters resulting in substantially lower costs or higher welfare the real commitments of policy targets based on an absolute level e g 1990 emissions are hard to estimate because of the uncertainties in the baseline postponing action conflicts with minimising costs and maximising welfare but so does sharp emission reduction at the short term as proposed in the kyoto protocol

is international trade profitable to oligopolistic industries the authors examine whether oligopolistic autarkic industries operating in two different countries would gain from the opening of trade they analyze a wide range of behavioral assumptions as parameterized by conjectural variations and a homogeneous products oligopoly for a large class of demand functions their findings can be summarized as follows 1 for any given number of firms in each country s industry there is always at least one of the two countries where firms make higher profits under autarky than under free trade and 2 when there are fixed costs and the industry in each country is at its long run zero profit autarkic equilibrium then all firms in both countries lose from trade additional results are derived for the case when the demand sizes of countries can be parameterized in a meaningful way copyright 1989 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

waiting for the invisible hand novel products and the role of information in the modern market for food abstract this paper places the modern spread of diet related chronic disease in the united states within the context of more than a century of innovation in food processing technology discovery in nutrition science and corrective policy measures aimed at improving public health we ask whether the current state of affairs represents a market failure and if so what might be done about it we argue that while today s industrial food system has its advantages the asymmetric information problems inherent to this system have resulted in a lemons style breakdown in the market for processed foods the appropriate policy response to such situations namely verifiable quality standards is well known but such policies are likely in the short run to reduce profits for existing large industrial producers of food in light of the food industry s long history of success at regulatory capture we propose the formation of a new independent food standards agency devoted to protecting the interests of the american consumer

determining the impact of food price and income changes on body weight we develop a theoretical model to identify conditions under which price and income changes are most likely to change weight although it is intuitive that raising the price of high calorie food will decrease consumption of such goods it is not clear that such an outcome will actually reduce weight our empirical analysis demonstrates a case where a tax on food away from home a food intake category blamed for much of the rise in obesity could lead to an increase in body weight a finding which emphasizes the need to employ economic modeling when developing public policy to reduce obesity

food product composition consumer health and public policy introduction and overview of special section as efforts to improve diets in high income countries intensify attention has turned to how policies may influence diet composition the case studies in this special issue contribute to our understanding of how two main types of policies have influenced food product composition and dietary outcomes 1 policies affecting food manufacturers input costs and 2 information policy affecting competition research on the first type of policy is relatively new but suggests that us commodity policies would not be good policy instruments to influence diets except through the long run impacts of agricultural research research on the impacts of information policy continues to demonstrate that it can spur food industry competition to introduce healthier products but may not result in healthier diets international comparisons show where the us experience may have relevance for other high income countries

cheap food policy fact or rhetoric abstract the term cheap food policy has frequently been used as a descriptor for us commodity programs by those who contend payments to farmers ultimately result in lower food costs for consumers more recently farm policy has been criticized for contributing to the obesity problem in the us by making large quantities of fattening foods widely available and relatively inexpensive this paper econometrically evaluates the impact of direct government payments on the affordability of food in the us in the aggregate and across specific food groups the models find direct payments do not significantly affect the affordability of food either in the aggregate or across specific food groups