trade migration and integration evidence and policy implications this paper takes as its point of departure the unique position recently adopted by swedish policymakers emphasizing migration as a tool to increase trade we attempt to empirically scrutinize this

welfare specifications and optimal control of climate change an application of fund the sensitivity of the optimal control of carbon dioxide emissions to the specification of the social welfare function is systematically explored using the fund model increasing risk aversion emphasises climate change damages relative to emission reduction costs but at the same time increases the discount rate of consumption without international co operation the discount rate effect dominates so that optimal control decreases with increasing risk aversion with international co operation optimal control first increases then decreases with increasing risk aversion since climate change falls heaviest on the poor optimal control increases with increasing inequity aversion full fledged intergenerational welfare functions on the one hand emphasise climate change damages but on the other hand place more weight on current poorer generations in fund the two tendencies almost cancel

international migration and trade agreements the new role of ptas this paper provides an empirical analysis of the relationship between preferential trade agreements ptas and bilateral migration flows building on the empirical literature on the determinants of migration flows i estimate a modified gravity model to assess the role of ptas and their content on bilateral migration flows using a sample of 29 oecd destination countries over the period 1998 2008 i show a strong positive effect of ptas on bilateral migration flows i find that the content of ptas also matters when visa and asylum and labour market related provisions are included in ptas this further stimulates bilateral migration flows different estimation strategies including instrumental variables are employed to address the potential endogeneity bias problems related to ptas and their content

revisiting the trade migration nexus evidence from new oecd data international migrants contribute to bilateral trade creation if their presence reduces information costs or entails additional demand for goods from their source countries using new data on stocks of foreign born individuals by skill class we try to separately quantify those two channels we assume that improved information affects host countries imports and exports symmetrically while the preference channel matters for imports only on average for differentiated goods both channels contribute evenly toward the total trade creating effect of migration in line with expectations the relative importance of the trade cost channel is largest for homogeneous goods and for high skilled migrants

the aggregation of climate change damages a welfare theoretic approach the economic value of environmental goods is commonly determined using the concepts of willingness to pay wtp or willingness to accept wta however the wtp wta observed in different countries or between individuals will differ according to socio economic characteristics in particular income this notion of differentiated values for otherwise identical goods say a given reduction in mortality risk has been criticized as unethical most recently in the context of the social cost chapter of the ipcc second assessment report these critics argue that being a function of income wtp wta estimates reflect the unfairness in the current income distribution and for equity reasons uniform per unit values should therefore be applied across individuals and countries this paper analyses the role of equity in the aggregation of climate change damage estimates using basic tools of welfare economics it shows one way of how wtp wta estimates can be corrected in aggregation if the underlying income distribution is considered unfair it proposes that in the aggregation process individual estimates be weighted with an equity factor derived from the social welfare and utility functions equity weighting can significantly increase aggregate global damage figures although some specifications of weighting functions also imply reduced estimates the paper also shows that while the postulate of uniform per unit values is compatible with a wide range of reasonable utility and welfare specifications there are also cases where the common value notion is not compatible with defensible welfare concepts

will the consistent organic food consumer step forward an empirical analysis the organic food market has reached a significant value in developed countries but market shares vary substantively between product categories this article investigates general patterns in the sequence of adoption of organic products based on a major danish retailer s panel scanner data all registered transactions over 20 months from 8 704 randomly selected customers with a loyalty card are analyzed using a hidden markov model capturing the dynamics in consumers purchases the model identifies latent states representing identifiable accessible and actionable dynamic customer segments and captures the movements between states or segments a pattern emerges that is consistent with the theory of behavioral spillover and inconsistent with the theory of moral licensing including a tendency to buy organic products in an increasing number of product categories over time the order in which organic products are adopted is inversely related to the behavioral costs of adopting them the employed approach provides a firm basis for personalized communication aiming to increase cross selling of organic products increase the sale of less popular organic products and accelerate movements from segments buying few organic products to segments buying organic more consistently

immigration and trade creation econometric evidence from canada immigrants may expand trade with their country of origin owing to superior knowledge of or preferential access to market opportunities the authors test this proposition using canadian trade data with 136 partners from 1980 to 1992 in an augmented gravity equation they find that a 10 percent increase in immigrants is associated with a 1 percent increase in canadian exports to the immigrant s home country and a 3 percent increase in imports they also find that among the primary categories of immigrants independents have the greater influence on trade immigration via the entrepreneur class appears to have less impact on trade than all other classes except refugees

brain drain and human capital formation in developing countries winners and losers using new data on emigration rates by education level we examine the impact of brain drain migration on human capital formation in developing countries we find evidence of a positive effect of skilled migration prospects on gross human capital formation in a cross section of 127 countries for each country of the sample we then estimate the net effect of the brain drain using counterfactual simulations countries combining relatively low levels of human capital and low emigration rates are shown to experience a beneficial brain drain and conversely there are more losers than winners and the former tend to lose relatively more than what the latter gain

out of sight not out of mind education networks and international trade summary university students typically develop between them long lasting ties of friendship and trust as well as an attachment to their university if they are foreign students they also form a bond to their country of study this paper investigates the impact of university ties on the uk s trade with 167 countries during 1999 2009 i find robust evidence that education network ties boost the uk s bilateral trade flows specifically the impact of networks is stronger on trade between the united kingdom and countries with dissimilar institutions and culture and particularly with post communist economies results are robust to different econometric specifications and regressors

a cost benefit analysis of slowing climate change there are many conflicting views regarding the true dimensions of the climate change problem often these viewpoints are based on different estimates of key parameters with little indication as to why parameter estimates vary so much and which ones might be the more reliable the prospects for a co ordinated strategy to tackle climate change appear dim little consensus has emerged for example regarding the costs of abating carbon emissions some take the view that considerable improvements in energy efficiency are available at negative cost by setting minimum efficiency standards for vehicles and domestic appliances e g mills et al 1991 others regard the macroeconomic costs of even small reductions in carbon emissions as substantial manne and richels 1993 in the judgement of other researchers a proportion of carbon emissions arise purely as a result of institutional failings either at a regional level in the subsidies paid to fossil fuel energy producers in the erroneous belief that this promotes economic growth shah and larsen 1994 in failure to deal with air pollution glomsrod et al 1992 and vehicle congestion in urban areas hughes 1994 or at a global level in failing to make appropriate transfers to those countries whose forests contain rich biodiversity which we would wish to preserve pearce 1991

understanding price effects for new nondurables how price responsiveness varies across depth of repeat classes and types of consumers abstract the objective of this study is to gain insights into the effectiveness of consumer price promotions on trial repeat processes of newly introduced brands of consumer packaged goods using a consumer risk perception perspective we develop a theoretical framework that relates the effectiveness of consumer price promotions to the depth of repeat cycle the level of a consumer s brand loyalty and usage intensity to evaluate the theory we calibrate a multiple spell hazard rate model for several new product introductions in different product categories the results show that promotional price sensitivities are generally higher for repeat purchases than for trial in addition the results indicate that loyals are less price sensitive than nonloyals finally heavy users in the product class are found to be more price sensitive than light users at the trial stage

the intergenerational transfer of solar radiation management capabilities and atmospheric carbon stocks solar radiation management srm technologies are considered one of the likeliest forms of geoengineering if developed a future generation could deploy them to limit the damages caused by the atmospheric carbon stock inherited from the current generation despite their negative side effects should the current generation develop these geoengineering capabilities for a future generation and how would a decision to develop srm impact on the current generation s abatement efforts natural scientists ethicists and other scholars argue that future generations could be more sanguine about the side effects of srm deployment than the current generation in this paper we add economic rigor to this important debate on the intergenerational transfer of technological capabilities and pollution stocks we identify three conjectures that constitute potentially rational courses of action for current society including a ban on the development of srm however the same premises that underpin these conjectures also allow for a novel possibility if the development of srm capabilities is sufficiently cheap the current generation may for reasons of intergenerational strategy decide not just to develop srm technologies but also to abate more than in the absence of srm

consumer demand for fair trade evidence from a multistore field experiment abstract we provide new evidence on consumer demand for ethical products from experiments conducted in a u s grocery store chain we find that sales of the two most popular coffees rose by almost 10 when they carried a fair trade label as compared to a generic placebo label demand for the higher priced coffee remained steady when its price was raised by 8 but demand for the lower priced coffee was elastic a 9 price increase led to a 30 decline in sales while consumers attach value to ethical sourcing there is significant heterogeneity in willingness to pay for it

the social cost of carbon and its policy implications the shadow price or social cost of carbon is an important indicator of the global incremental damage done by emitting greenhouse gases today cost benefit analysis would set the optimal amount of greenhouse gas emission reduction at the point where this social cost just equals the incremental cost of controlling emissions the higher the value for the social cost of carbon the more control is warranted this comparison assumes that cost benefit analysis is the correct way of determining climate change policy and many believe this is not the case because of the very long term irreversible and potentially catastrophic nature of global warming but in the short run at least a comparison of cost and benefits is required and in any event all decisions imply costs and benefits but what is the right figure for the social cost of carbon this paper reviews the uk government s assessment of the cost and concludes that it has been set far too high because of a misreading of the integrated assessment models used to balance costs and benefits moreover adoption of the uk government s shadow price would have formidable implications for energy policy in the uk and for policies on afforestation copyright 2003 oxford university press

brain drain and economic growth theory and evidence we focus on the impact of migration prospects on human capital formation and growth in a small open developing economy we assume that agents are heterogeneous in skills and take their educational decisions in a context of uncertainty regarding future migrations we distinguish two growth effects an ex ante brain effect migration prospects foster investments in education because of higher returns abroad and an ex post drain effect because of actual migration flows the case for a beneficial brain drain bbd emerges when the first effect dominates i e when the average level of human capital is higher in the economy opened to migrations than in the closed economy we derive the theoretical conditions required for such a possibility to be observed using cross section data for 37 developing countries we find that the possibility of a bbd could be more than a theoretical curiosity

equitable cost benefit analysis of climate change policies the literature of welfare maximising greenhouse gas emission reduction strategies pays remarkably little attention to equity this paper introduces three ways to consider efficiency and equity simultaneously the first method inspired by kant and rawls maximises net present welfare without international cooperation as if all regions share the fate of the region affected worst by climate change optimal emission abatement varies greatly depending on the spatial and temporal resolution that is the grid at which maximum impact is defined the second method is inspired by varian s no envy emissions are reduced so as to equalise total costs and benefits of climate change over all countries of the world and over all time periods emission reductions are substantial this method approximately preserves the inequities that would occur in a world without climate change the third method uses non linear aggregations of welfare the utilitarian default is linear in a cooperative setting this method cannot distinguish between sources of inequity the higher the aversion to inequity the higher optimal greenhouse gas emission reduction

do ethical values work a quantitative study of the impact of fair trade coffee on consumer behavior this study investigates the large french fair trade ft market and the importance of ft coffee within it in an attempt to identify some general features of ft consumers on the basis of 7 587 transactions the authors also determine the impact of ft characteristics on customer behavior the main result is somewhat surprising ft coffee purchases seem to involve a temporary commitment as ft coffee consumers appear less loyal than traditional coffee consumers the authors derive some business and academic implications

immigrant links to the home country empirical implications for u s bilateral trade flows immigrants ties to their home countries can play a key role in fostering bilateral trade linkages immigrant ties include knowledge of home country markets language preferences and business contacts that have the potential to decrease trading transaction costs empirical results for the united states suggest that immigrant links have historically been important in increasing bilateral trade flows with immigrants home countries copyright 1994 by mit press

the mystery of the excess trade balances bilateral trade deficits are a perennial policy issue former deputy assistant u s trade representative for japan and china merit janow 1994 p 55 notes that during the first george bush administration high deficits coupled with the continuing allegations from u s business interests about the closed nature of the japanese market were resulting in serious domestic political pressures for improved access to the japanese market recently robert c feenstra et al 1998 p 1 made similar comments vis a vis china some analysts have interpreted the large u s china bilateral trade deficit as prima facie evidence of unacceptably high levels of protectionism in china and have advocated stringent entry conditions for china s admission into wto given the policy salience of bilateral trade deficits it is peculiar that no one has ever examined them empirically for a broad set of countries one reason for the scant study is that economists are naturally and sensibly loath to accept the terms of the policy debate which considers bilateral trade deficits ipso facto harmful a second reason is that economists believe there may be very natural explanations for bilateral imbalances one such explanation finds its origins in macroeconomic identities that equate current account deficits to an excess of investment over saving from this it may be argued that bilateral imbalances will arise naturally in trade between countries in aggregate surplus and those in aggregate deficit indeed this is the principal explanation that the profession has given policymakers and it forms the foundation of many u s bilateral trade initiatives such as the structural impediments initiative and the framework talks janow 1994 p 55 observes that there was and is little disagreement among economists that the causes of large aggregate and bilateral deficits are largely attributable to macroeconomic factors italics added a second account may rely on what may be termed triangular trade in which cross country differences in the patterns of demand and supply mean that a country will run bilateral deficits with those countries that are unusually important suppliers of the goods for which the deficit country happens to be an unusually strong demander in this paper we use the canonical gravity model of bilateral trade to form predictions about bilateral trade balances we develop two key variants of the model in which bilateral trade imbalances arise due to aggregate macroeconomic imbalances or due to triangular trade and we implement these empirically for a broad set of countries our results paint a dismal picture the central explanations that economists provide to explain bilateral balances perform miserably there are two key failures first actual bilateral trade imbalances are much larger than those predicted there is a mystery of excess trade balances second even after we allow for both macroeconomic imbalances and idiosyncrasies in the structure and levels of demand and production the models perform poorly in explaining bilateral trade balances these failures of economists standard explanations of bilateral trade imbalances require that we move beyond the simple gravity framework to consider alternative explanations homogeneous goods highly specialized intermediates and the role of policy

does the chinese diaspora speed up growth in host countries summary we compiled a new enhanced data set on the population share of overseas chinese covering 147 countries over the period 1970 2010 linking the migration and economic growth literature this article attempts to estimate the impact of the chinese diaspora on economic growth in host countries regression results from both barro type and dynamic panel data models suggest that a country s initial relative endowment with overseas chinese is positively related to subsequent growth results are robust to a number of sensitivity tests the effect is transmitted via increased trade openness enhanced investment and general tfp effects

new evidence on the timing and spacing of births this is a progress report on an ongoing empirical study of the determinants of life cycle fertility the main objective of the early stage of the work is to codify the facts in a coherent statistical framework that provides the duration data analogue of the conventional simultaneous equations model after reviewing the relevant literature the authors present an empirical analysis of data on fertility marital status and work histories for 570 swedish women born between 1941 and 1945 the data are from a survey conducted by the swedish central bureau of statistics in 1981 excerpt

a larger slice or a larger pie an empirical investigation of bargaining power in the distribution channel this research aims to provide insights into the determinants of channel profitability and the relative power in the channel by considering consumer demand and the interactions between manufacturers and retailers in an equilibrium model we use the nash bargaining solution to determine wholesale prices and thus how margins are split in the channel equilibrium margins are a function of demand primitives and of retailer and manufacturer bargaining power bargaining power is itself a function of exogenous retail and manufacturer characteristics the parties bargaining positions are determined endogenously from the estimated substitution patterns on the demand side the more they have to lose in a negotiation relative to an outside option the weaker the bargaining position we use the proposed bargaining model to investigate the role of the three main factors that have been blamed for the power shift from manufacturers to retailers in recent years firm size increases store brand introductions and service level differentiation in our empirical analysis of the german market for coffee we find that bargaining power varies among the different manufacturer retailer pairs this result suggests that bargaining power is not an inherent characteristic of a firm but rather depends on the negotiation partner we are able to confirm empirically previous theoretical findings that there can be cases where the slice of the pie that goes to one of the channel members may decrease but the overall pie increases and compensates for the smaller share of profits

can a brain drain be good for growth in the source economy this paper analyzes the interaction between income distribution human capital accumulation and migration it shows that when migration is not a certainty a brain drain may increase average productivity and equality in the source economy even though average productivity is a positive function of past average levels of human capital in an economy it is also shown how the temporary possibility of emigration may permanently increase the average level of productivity of an economy

equity development and climate change control the paper analyzes the effects of different equity principles on the decision of developing countries to join a world coalition whose aim is to control greenhouse gas emissions a game theoretic framework is proposed to assess the incentives for different countries to sign an international treaty on climate change control then the effects of different equity rules on these incentives are evaluated by using a dynamic integrated growth and climate model policy proposals based on transfers from developed to developing countries are also analyzed jel c7 h0 h3 q38

international equity and differentiation in global warming policy ne of the major obstacles to reaching a comprehensive agreement on global warming is the setting of greenhouse gas emission reduction targets for individual countries long standing tensions between industrialized and developing countries have raised the issue of equity in burden sharing moreover individual industrialized nations have pleaded special circumstances and have sought differentiation in their obligations this paper analyzes alternative rules for distributing tradable carbon dioxide emissions permits a non linear programming model which distinguishes between allocation based and outcome based rules is used to analyze the relative welfare outcomes the model is applied to the world body of nations and yields several important policy implications

recent progress of cooperation on climate mitigation a bibliometric analysis abstract effective international cooperation is an important measure to mitigate climate change the purpose of this study is to clarify the research progress in the field of cooperation on emission reduction identify the influential authors and articles and reveal the main research topics based on the bibliometric method and the web of science database this study analyzes the literature in the field of cooperation on emission reduction the results show that the publications in this field have increased significantly over the past decade with the usa and china are the most influential countries keyword co occurrence and frequency analysis show that the most important research topics are as follows burden sharing and equity the stability of the climate coalition and international environmental agreements technology transfer and climate finance the linkage of carbon markets and the response to noncooperation behavior the main methods involved are game theory model integrated assessment models and computable general equilibrium model equitable distribution of mitigation responsibilities is the basis for cooperation on carbon reduction specific rulebooks for carbon market linkage is the key to its successful implementation this study helps researchers to clarify the current research status in the field of cooperation on emission reduction and provide valuable information for future research

a model of brand choice and purchase quantity price sensitivities many consumer decisions involve a discrete choice and a continuous outcome examples of such decisions are whether to own a home or rent one and how much to spend which brand of orange juice to buy and how many ounces to buy in cases like these the choice decision is typically modeled separately say using a logit model and the continuous outcomes modeled separately using regression analysis however the continuous outcomes may not be independent of the discrete choice and vice versa and modeling the two decisions independently can lead to inefficient choice parameter estimates and biased and inconsistent regression parameter estimates in this paper we present a methodology from the limited dependent variable literature to model the dependence between the choice and quantity decisions our substantive interest is in the role of price in the choice and quantity decisions when choosing among alternatives we argue that consumers consider prices of all the competitive brands in the quantity decision on the other hand only the price of the chosen alternative is expected to impact how much of the alternative is purchased the analysis of three brands using disaggregate level panel data strongly supports our hypothesis about the role of competitive prices in the choice and quantity decisions

on international equity weights and national decision making on climate change abstract estimates of the marginal damage costs of carbon dioxide emissions require the aggregation of monetised impacts of climate change over people with different incomes and in different jurisdictions implicitly or explicitly such estimates assume a social welfare function and hence a particular attitude towards equity and justice we show that previous approaches to equity weighting are inappropriate from a national decision maker s point of view because domestic impacts are not valued at domestic values we propose four alternatives sovereignty altruism good neighbour and compensation with different views on concern for and liability towards foreigners the four alternatives imply radically different estimates of the social cost of carbon and hence the optimal intensity of climate policy

isolating the network effect of immigrants on trade within the migration trade nexus literature this paper proposes a more carefully defined measure of migration business networks and quantifies its impact on bilateral trade using cross sectional data and controlling for the overall bilateral stock of migrants the share of migrants employed in managerial business related occupations has a strong additional effect on trade those immigrants should be the ones directly involved in the diffusion and transmission of information relevant for companies trading with other countries their presence is found to increase the volume of trade especially of imports beyond the already known effect of immigrants or highly educated immigrants when we control for the presence of highly educated immigrants the share of immigrants in business network occupations shows a particularly large effect on trade in differentiated goods we also find that highly educated individuals in business related occupations are those contributing to stimulate import and export by the largest margin business network effects seem particularly important in stimulating exports to culturally different countries such as those with different language and legal origin

the intra country distributional impact of policies to fight climate change a survey abstract in this paper we present a survey of distributional impact analysis of environmental policies with emphasis on taxes envisaged or implemented to reduce greenhouse gas emissions ghg these policies usually aim at reducing ghg directly or indirectly however they can produce important changes in factor allocation relative prices in specific countries as well as on world markets when adopted by a large number of countries changes in welfare can be important for vulnerable groups of population in developing countries this survey reviews the evidence on the incidence of these policies in the process it shows that the computable general equilibrium cge microsimulation approach has not been fully exploited in the context

an empirical analysis of the relationship between brand loyalty and consumer price elasticity this empirical paper explores the relationship between consumer brand preference or loyalty and price elasticity in purchase behavior this behavior is conceptualized as resulting from two distinct but related decisions namely a brand choice decision and a purchase quantity decision we argue that loyal consumers will be less price sensitive in the choice decision than nonloyal consumers however this direction is expected to be reversed in the quantity decision with loyal consumers expected to be more price sensitive than nonloyal consumers we model the choice and quantity decisions jointly using the limited dependent variable framework described in krishnamurthi and raj the data used are diary panel data on a frequently purchased product class from burke and caffeinated ground coffee scanner data from iri we show that loyals are less price sensitive than nonloyals in the choice decision but more price sensitive in the quantity decision managerial implications of the differing elasticities are disc

the trade facilitation impact of the chinese diaspora using an enhanced data set on the population share of overseas chinese in 1970 and 1990 this paper analyses the impact of the chinese diaspora on facilitating china s bilateral trade during the period 1973 2013 our findings suggest substantial trade creation effects resulting from the presence of ethnic chinese in the trade partner population diaspora impacts on chinese bilateral imports are in general higher than those found for exports coethnic networks play a larger role as long as the partner country does not have an rta with china in place among export sectors effects found were strongest for food as well as for machinery and transport equipment in regard to imports coethnic networks matter mostly for raw materials machinery and transport equipment and chemicals

does trade creation by social and business networks hold in services recent literature on the border effect has shown that the intensity of trade in goods is positively correlated with the migration stocks between any pair of countries regions the number of references for business networks is more limited but they are also related with a reduction on information costs in this article we investigate whether such a relation holds also for spanish domestic trade flows in consumer services to this end we use a gravity model rooted in the dixit stiglitz krugman theoretical framework and a unique data set on interregional trade flows for some of the main tourism service sectors namely accommodations and restaurants our industry specific analysis finds a large positive effect for restaurants but a more limited effect for accommodations forces driving the demand in each sector explain this result and suggest the idea that although social networks can act as a substitute of firms in some sectors at the same time they can enhance trade flows in other sectors we perform the

environmental equity and sustainability rejecting the kaldor hicks criteria abstract an implementable translation of environmental equity and sustainability is provided for use in benefit cost analysis as such the approach builds on the underlying economic structure of benefit cost analysis while trying to cause it to evolve in ways that take into account issues of greater concern to ecological economists environmental equity and sustainability are interpreted as imposing new decision criteria that require additional benefit cost tests based on actual compensation to identified sub groups of the population this rejects the pre world war ii compromise of economists regarding potential compensation embodied in the kaldor hicks criteria for environmental equity a project is proposed to pass a benefit cost test if the identified group either receives net benefits or is more than compensated for its losses for sustainability a project is proposed to pass a benefit cost test if the compensation is larger than the net value of the resource and the net value of the resource is reinvested

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

choice set heterogeneity and the role of advertising an analysis with micro and macro data abstract the authors show how to use microlevel survey data from a tracking study on brand awareness in conjunction with data on sales and advertising expenditures to improve the specification estimation and interpretation of aggregate discrete choice models of demand in a departure from the commonly made full information assumption they incorporate limited information in the form of choice sets to reflect that consumers may not be aware of all available brands at purchase time they find that both the estimated brand constants and the price coefficient are biased downward when consumer heterogeneity in choice sets is ignored these biased estimates can lead firms to make costly price setting mistakes in addition the tracking data enable the authors to identify separately two processes by which advertising influences market shares they find that advertising has a direct effect on brand awareness inclusion in choice set in addition to its effect on consumer preferences increase in utility this

balancing contemporary fairness and historical justice a quasi equitable proposal for ghg mitigations abstract in this paper we analyze the impasse caused by polarizing positions of the united states and china in international negotiations on carbon mitigation by incorporating the bern carbon cycle module into the rice model developed by nordhaus and yang 1996 we set up a framework for tracking regional contributions to carbon concentration and to global climate change our proposal labeled the color preservation principle uses regional contribution share to global carbon concentration as the criterion for international cooperation through simulations in rice model with bern module rice b we examine the rationales of the arguments made by the united states and china we conclude that both countries standpoints are severely flawed to facilitate the global cooperation on carbon mitigations major concessions are needed from the two top carbon emitters

chapter 6 market share models publisher summary this chapter describes that three basic principles motivate the specification of the market share models market share models should be competitive descriptive as well as predictive and profit oriented being fundamentally competitive implies that one cannot know the effect or effectiveness of a marketing action without accounting for the actions of competitors market share models are models for understanding how the marketing efforts of every brand impact the results in a competitive marketplace only by describing the influence of each marketing instrument can one gain a basis for marketing planning prediction alone is not enough time series models that forecast the future from the past sales provide no insight into how sales are generated the emphasis on being descriptive also embraces the need to understand the areas in which consumer choice probabilities are synonymous with market shares as well part of the goal of description transcends what can be done by market share models alone managers need to understand that their efforts have potentially competitive effects and potentially market expansive effects in sales response models these effects are comingled but by combining descriptive market share models for the competitive effects with descriptive category volume models for the market expansive effects managers obtain a much richer understanding of the market the profit oriented goal of market share analysis urges us to ask how the firm s allocations of resources to aspects of the marketing mix produce bottom line results

specifications of social welfare in economic studies of climate policy overview of criteria and related policy insights an important assumption in economic studies of climate policy is the social welfare function this paper shows that applying distinct decision or social welfare criteria can result in different optimal policies of climate control notably if climate change impacts are uncertain first decision criteria in current climate economic studies are reviewed next the most important alternatives are discussed including their mathematical formalization and incorporation in economy climate models most of these alternative criteria suggest more stringent climate policies to be optimal than the standard discounted utilitarianism approach however several important welfare criteria have not or hardly seen any application in the economic analysis of climate policy we conclude that there is clear need for systematic research on this theme for which the current review provides a solid basis

migration and cross border financial flows migration facilitates the flow of information between countries thereby reducing informational frictions that potentially hamper cross country financial flows using a gravity model migration is found to be highly correlated with financial flows from the migrant s host country to her home country the correlation is strongest where information problems are more acute e g between culturally more distant countries for asset types that are more informational sensitive and for the type of migrants that are most able to enhance the flow of information on their home countries namely skilled migrants these differential effects are interpreted as evidence for the role of migration in reducing information frictions between countries

are supermarkets squeezing small suppliers evidence from negotiated wholesale prices we thank gregory s crawford for his encouragement and insightful comments we also thank victor aguirregabiria ozlem bedre meghan busse jean pierre dub e david genesove margaret kyle rafael moner colonques ariel pakes michelle sovinsky michael waterson ali yurukoglu and the seminar participants at the nber io winter meetings 2012 cepr jie conference on applied io 2012 hebrew university toulouse school of economics universidad diego portales universidad de chile the university of warwick and university of zurich noton acknowledges financial support from the institute for research in market imperfections and public policy icm is130002 ministerio de economia an earlier version of this article circulated under the title revealing bargaining power through actual wholesale prices

do high skill immigrants trigger high quality trade this paper investigates the links between product quality and the pro trade effect of ethnic networks using a large panel on bilateral stocks of immigrants with information for 19 oecd destination countries and 177 origin countries in line with the approach of rauch and trindade we classify traded goods according to their quality level and separately estimate pro trade elasticity of ethnic networks for each subgroup we allow for heterogeneity of immigrants according to both the level of per capita income of their country of origin and their education level our findings suggest that the trend of the pro trade effect of immigrants over quality seems to be driven by the north south specialisation across varieties for both supply and demand indeed ethnic networks mostly facilitate imports of those varieties for which their countries of origin have a comparative advantage as for exports ethnic networks are more effective in promoting exports to their homeland of those varieties for which there is relatively higher demand we show that the same trend applies to products characterised by the same degree of differentiation according to the classification proposed by rauch and given their lower liquidity constraints and advantages in human capital we find a greater impact of high skilled migrants consistent across all quality levels

a regional dynamic general equilibrium model of alternative climate change strategies outcomes and noncooperative equilibria this study finds that cooperative policies show much higher levels of emissions reductions than do noncooperative strategies that there are substantial differences in the levels of controls in both the cooperative and the noncooperative policies among different countries and that high income countries may be the major losers from cooperation jel h41 q4 q2 q20

an empirical investigation of the welfare effects of banning wholesale price discrimination rand 054 rand2007 cls 1994 07 13 v1 2u standard latex document class rand rand 054 dispatch 12 7 2008 ce n a journal msp no no of pages 26 pe sharon rand journal of economics vol 40 no 1 spring 2009 pp 20 45 an empirical investigation of the welfare effects of banning wholesale price discrimination sofia berto villas boas economic theory does not provide sharp predictions on the welfare effects of banning wholesale price discrimination if downstream cost differences exist then discrimination shifts production inefficiently toward high cost retailers so a ban increases welfare if differences in price elasticity of demand across retailers exist discrimination may increase welfare if quantity sold increases so a ban reduces welfare using retail prices and quantities of coffee brands sold by german retailers i estimate a model of demand and supply and separate cost and demand differences simulating a ban on wholesale price discrimination has positive welfare effects in this market and less if downstream cost differences shrink or with less competition introduction wholesale price discrimination means that an upstream firm sets different prices for the same product for various downstream retailers wholesale price discrimination is commonly practiced in many markets examples include markets such as petroleum distribution steel heavy trucking tobacco and pharmaceuticals in several countries milk and other dairy products are sold using government administered or sanctioned discriminatory pricing schemes wholesale price discrimination practices are also used for services such as loans insurance and advertising 1 competition authorities have been concerned with wholesale price discrimination the european union treaty s article 82 c prohibits practices where a dominant firm would place trading partners at a competitive disadvantage the u s robinson patman act forbids discriminat ing in price between different purchasers where the effect may be to lessen competition unless the university of california berkeley sberto are berkeley edu i thank the editor igal hendel and two anonymous referees for many helpful comments and max auffhammer cyndi berck peter berck gal hochman silke januszewski forbes george judge kai uwe k uhn diana lazo mark muendler aviv nevo ariel pakes jeff perloff andrew sweeting miguel villas boas and participants at uc san diego university of michigan the inra idei conference in toulouse and the university of british columbia summer conference in industrial organization for their suggestions i thank daniel klapper for letting me have access to the data support from the giannini foundation and from an aes grant are gratefully appreciated see for gasoline markets texaco v hasbrouck 496 us 543 no 87 2048 1990 and the new york state motor fuel marketing practices act for steel chan hall and rust 2003 for heavy trucking volvo trucks north america inc v reeder simco gmc inc docket no 04 905 for tobacco brooke group ltd v brown and williamson tobacco corp 509 us 209 no 92 466 1993 for wholesale pharmaceuticals see http www datcp state wi us trade business unfair comp drug price jsp for dairy markets see for example gardner 1984 and for services see givens 1983 c 2009 rand copyright

the damage costs of climate change toward more comprehensive calculations it is argued that estimating the damage costs of a certain benchmark climate change is not sufficient what is needed are cost functions and confidence intervals although these are contained in the integrated models and their technical manuals this paper brings them into the open in order to stimulate discussion after briefly reviewing the benchmark climate change damage costs region specific cost functions are presented which distinguish tangible from intangible losses and the losses due to a changing climate from those due to a changed climate furthermore cost functions are assumed to be quadratic as an approximation of the unknown but presumably convex functions results from the damage module of the integrated climate economy model fund are presented next uncertainties are incorporated and expected damages are calculated it is shown that because of convex loss functions and right skewed uncertain ties the risk premium is substantial calling for more action than analysis based on best guess estimates the final section explores some needs for further scientific research

aid trade and migration how do bilateral flows interact this paper takes as its point of departure the european commission s position set out in 2005 which laid clear emphasis on aid and trade as tools for controlling immigration we attempt to subject this position to empirical investigation we exploit data on bilateral aid trade and migration flows between developed and developing countries for the period 2000 10 adopting an instrumental variable approach to address the endogeneity issue due to potential simultaneity bias our results establish that increasing aid and trade with developing countries is likely to fail to contain immigration at least in the short run the pattern of results is consistent with the hypothesis that promoting development in migrant sending countries or cooperating with such countries to control migration outflows is not sufficient to lessen immigration increasing visa restrictions and controls at borders is generally controversial still the results imply that policymakers cannot attain their short term immigration goals with the so called smart solutions of aid and trade

the damage costs of climate change towards a dynamic representation economic assessments of climate change impacts are commonly presented as the effect of a climate change associated with a doubling of the atmospheric concentration of carbon dioxide on the current economy this paper is an attempt to express impact as a function of both climate change and socio economic change with regard to climate change issues discussed are level versus rate of change speed of adaptation speed of restoration and value adjustment and symmetry with regard to socio economic change agriculture migration and the valuation of intangible losses are addressed uncertainty and higher order impacts are treated briefly it is qualitatively argued and quantitatively illustrated that these issues matter a great deal for the damage profile over the next century a damage model based on my best guesses is presented in the appendix

inducing human capital formation migration as a substitute for subsidies abstract when productivity is fostered by an individual s own human capital as well as by the economy wide average level of human capital individuals under invest in human capital the provision of subsidies for the formation of human capital conditional on the subsidy being self financed by tax revenues can bring the economy to its socially optimal level of human capital yet a strictly positive probability of migration to a richer country by raising both the level of human capital formed by optimizing individuals in the home country and the average level of human capital of non migrants in the country can enhance welfare and nudge the economy toward the social optimum indeed under a well controlled restrictive migration policy the welfare of all workers is higher than in the absence of this policy