addressing leakage in the eu ets border adjustment or output based allocation the eu ets has been criticised for threatening the competitiveness of european industry and generating carbon leakage i e increasing foreign greenhouse gas emissions two main options have been put forward to tackle these concerns border adjustments and output based allocation i e allocation of free allowances in proportion to current production we compare various configurations of these two options as well as a scenario with full auctioning and no border adjustment against this background we develop a model of the main sectors covered by the eu ets electricity steel cement and aluminium we conclude that the most efficient way to tackle leakage is auctioning with border adjustment which generally induces a negative leakage a spillover this holds even if the border adjustment does not include indirect emissions if it is based on eu rather than foreign specific emissions or for some values of the parameters if it covers only imports another relatively efficient policy is to combine auctioning in the electricity sector and output based allocation in exposed industries especially if free allowances are given both for direct and indirect emissions i e those generated by the generation of the electricity consumed although output based allocation is generally less effective than border adjustment to tackle leakage it is more effective to mitigate production losses in the sectors affected by the ets which may ease climate policy adoption c 2011 elsevier b v all rights reserved

technological specialization and the decline of diversified firms we document a strong decline in corporate diversification activity since the late 1970s and we develop a dynamic model that explains this pattern both qualitatively and quantitatively the key feature of the model is that synergies endogenously decline with technological specialization leading to fewer diversified firms in equilibrium the model further predicts that segments inside a conglomerate should become more related over time which is consistent with the data finally the calibrated model also matches other empirical magnitudes well output growth rate market to book ratios diversification discount frequency and returns of diversifying mergers and frequency of refocusing activity

parents discount rates for child quality contemporary discussions of economic growth make human capital or knowledge accumulation its primary engine 25 human capital as the lead component of the stock of wealth defines a developed economy becker and murphy 4 show that human capital both increases and is increased by the scope of the market its rate of return rises with the size of its stock 5 human capital also plays significant roles in models of human fertility choice 40 population and environmental degradation 11 34 capital mobility 3 and endogenous technological progress 33 a substantial portion of an adult s human capital is accumulated during childhood children as children however cannot independently contract for the resources required to support investments in this human capital though nearly every society grants parents wide discretion about the nurture they provide their children little is understood about what motivates investment by one generation in another the relative importance of different investment modes or the discount rates which parents apply whatever the motivation and the mode because of the long time span between birth and adulthood parents discount rates potentially exert great leverage upon the investment decisions they make for their children knowledge of these discount rates is a prerequisite to acquiring an improved understanding of the internal decision processes of the household a collective decision unit which economics mostly treats as a black box 1 important policy questions as well as scientific accuracy and logical consistency demand knowledge of the discount rates parents apply to investments in their children healthier better educated and wealthier children have a better chance in life but there is no evident reason to suppose that intrafamily discount rates are socially optimal 2 many of the private reactions and behaviors which reinforce or temper the intended effects of public policies are internal to the household when these intended effects have a substantial temporal dimension parental discount rates will be influential for example increased public investments in children can be neutralized

carbon leakage and capacity based allocations is the eu right competitiveness and carbon leakage are major concerns for the design of co2 emissions permits markets in the absence of a global carbon tax and of border carbon adjustments output based allocation is a third best solution and is actually implemented australia california new zealand the eu has followed a different route free allowances are allocated to existing or new capacities in proportion to a benchmark independent of actual production this paper compares these two schemes in a formal setting and shows that the optimal one is in fact a combination of both schemes or output based allocation alone if uncertainty is limited a key assumption of our analysis is that the short term import pressure depends both on the existing capacities and the level of demand which is typical in capital intensive and internationally traded sectors a calibration of the model is used to discuss the eu scheme for the cement sector in the third phase of the eu ets 2013 2020 this allows for a quantification of various policies in terms of welfare investment production company profits public revenues and leakage

estimating the effect of hierarchies on information use theory suggests that greater hierarchical distance between a subordinate and his boss makes it more di cult to share abstract and subjective information in decision making a novel data set put together from credit dossiers of large corporate loan applicants enables us to observe the information collected by loan o cers and also how it is used by the ultimate loan approving o cer we flnd that greater hierarchical geographical distance between the information collecting agent and the loan approving o cer leads to less reliance on subjective information and more on objective information by exploiting non linearities in the assignment rules that determine an applicant s hierarchical distance and using information collecting agent flxed efiects we show that our result cannot be driven by endogenous assignment of applicants we also flnd that higher frequency of interactions between the information collecting agent and loan approving o cer both over time and through geographical proximity helps mitigate the efiects of hierarchical distance on information use our results show that hierarchical distance in uences information use and highlights the importance of human touch in communication

frontiers of climate change economics the economics of climate change is an active field of research the contributions to a special issue are put in context of the literature and it is suggested that second best issues such as carbon leakage and the green paradox need to be complemented with a political economy analysis of why certain instruments are politically infeasible and with intra and intergenerational analyses of the impact of climate policy a case is also made for more empirical work on the gradual and catastrophic damages of global warming

should a carbon tax be differentiated across sectors abstract if some but not all countries are cooperating to reduce co2 emissions one could make the following argument a high carbon tax for carbon intensive tradeable sectors in the cooperating countries will reduce the production of goods from these sectors and therefore co2 emissions in the cooperating countries however this will to a large extent be counteracted by increased production of such goods in the countries that have no climate policy and since it is only total co2 emissions from all countries that are relevant for the climate there is no point in a policy that simply relocates co2 emissions from the cooperating countries to the countries that have no climate policy according to this line of reasoning carbon intensive tradeable sectors should thus face a lower carbon tax than other sectors of the economy this paper shows that a carbon tax should not be differentiated across sectors in the economy provided one can use import and export tariffs on all traded goods it is also shown that such a differentiation of carbon taxes is optimal for the cooperating countries if they are prevented from using tariffs on the traded goods however informational or political factors constraining the use of tariffs are likely also to constrain the possibility of differentiating carbon taxes between sectors

centralized bargaining and reorganized work are they compatible the paper examines the implications for wage bargaining of an important aspect of the ongoing reorganization of work the move from occupational specialization toward multi tasking the analysis shows how on account of such reorganization centralized bargaining becomes increasingly ine cient and detrimental to rms pro t opportunities since it prevents rms from o ering their employees adequate incentives to perform the appropriate mix of tasks the paper also shows how centralized bargaining inhibits rms from using wages to induce workers to learn how to use their experience from one set of tasks to enhance their performance at other tasks in this way the paper may also help explain the increasing resistance to centralized bargaining in various advanced market economies 2001 elsevier science b v all rights reserved

management ownership and market valuation an empirical analysis we investigate the relationship between management ownership and market valuation of the firm as measured by tobin s q in a 1980 cross section of 371 fortune 500 firms we find evidence of a significant nonmonotonic relationship tobin s q first increases then declines and finally rises slightly as ownership by the board of directors rises for older firms there is evidence that q is lower when the firm is run by a member of the founding family than when it is run by an officer unrelated to the founder

alternative designs for tariffs on embodied carbon a global cost effectiveness analysis in the absence of effective world wide cooperation to curb global warming import tariffs on embodied carbon have been proposed as a potential supplement to unilateral emissions pricing we consider alternative designs for such tariffs and analyze their effects on global welfare within a multi region multi sector computable general equilibrium cge model of global trade and energy our analysis suggests that the most cost efficient policy could be region specific tariffs on all products based on direct plus electricity emissions in the end however the potential cost savings through carbon tariffs must be weighed against the administrative costs as well as legal issues and political considerations

measures to enhance the effectiveness of international climate agreements the case of border carbon adjustments abstract actions on climate change which are not supported by all countries are not very effective however full participation in a global climate treaty with meaningful emission reductions is difficult to achieve the non excludability of the public good mitigation provides an incentive to abstain from global action moreover carbon leakage renders it unattractive to join a treaty without full participation we study whether and under which conditions border carbon adjustments bcas can mitigate free riding and reduce carbon leakage in a simple strategic trade model we show that bcas can lead to large stable climate agreements including full participation associated with large global welfare gains if treaties do not restrict membership open membership as this is typical for environmental agreements we caution against restricting accession to treaties exclusive membership as this is typical for trade agreements which may serve individual but not global interests

economic development and the division of production between households and markets a model is presented in which scale economies give market production a cost advantage over household production but in which market production is limited by the extent of the market the production process is viewed as a series of stages each further refining and specializing the product of the previous stage as processing proceeds the number of intermediate goods increases and markets thin out firms specialize in the early stages of production and house holds in the later stages as an economy grows production shifts out of households and into the market several other changes associated with economic development are also accounted for

the role of human capital in postacquisition ceo departure in this study we examined the postacquisition departure of target firms ceos and found support for the predictions of becker s 1962 human capital theory firms and ceos appear to weigh the cost

cities matching and the productivity gains of agglomeration abstract the striking geographical concentration of economic activities suggests that there are substantial benefits to agglomeration however the nature of those benefits remains unclear in this paper we take advantage of a new data set to quantify the role of one of the main contenders the matching of workers and jobs we show that thicker urban labor markets are associated with more assortative matching in terms of worker and firm quality when we estimate establishment level production functions we also find evidence of complementarities between worker and firm quality putting together the production and matching relationships we show that production complementarity and assortative matching is an important source of the urban productivity premium

search sorting and urban agglomeration studies have suggested that urban agglomeration enhances productivity by facilitating the firm worker matching process this article develops a model that formalizes this notion and demonstrates that when firm capital and worker skill are complementary in production urban agglomeration will tend to generate more efficient yet segregated matches as a result not only will local market size be positively associated with average productivity it will also generate greater between skill group wage inequality and a higher expected return to skill acquisition recent data from the counties and metropolitan areas of the united states is consistent with each of these implications

skilled immigration and innovation evidence from enrolment fluctuations in us doctoral programmes we study the contribution of foreign science and engineering talent to the creation of new knowledge in the u s economy using panel data on 2300 science and engineering s e departments at 100 large american universities from 1973 to 1998 we use macroeconomic shocks and policy changes in source countries that differentially affect enrollments across fields and universities to isolate exogenous variation in the supply of students at specific departments both foreign and domestic graduate students are central inputs into knowledge creation and the marginal foreign student contributes more to the production of scientific publications and citations a 10 decrease in the foreign share of doctoral students lowers s e research output at u s universities by 5 6 a theoretical model of university admissions and scholarships helps us infer the productivity effects of student quality and econometric results indicate that any visa restrictions limiting entry of highquality foreign students is most costly for u s innovation increased diversity appears to be the primary mechanism by which foreign students improve research outcomes the impact of more restrictive immigration policies depends on how they affect the quality margin and diversity of incoming foreigners

why so small explaining the size of firms in latin america hile a great deal of effort has been devoted to study the determinants ofaggregate economic growth in developing economies little attention hasbeen paid to the factors in uencing the creation growth and destruction of rmsin these economies deriving policy implications from empirical results basedon macroeconomic data is a risky proposition especially for policies that areexpected to have an effect through the response of rms a key issue at a microeconomic level is the extent to which rms are con strained on their pro t maximising technology and on their sales through ele ments such as excessive regulation trade barriers and corruption if world oroecd averages constitute a good proxy for optimal rm size then deviations notexplained by technology differences can be viewed as evidence of inef ciencydue to the presence of those factors the aim of this paper is to empiricallyinvestigate this issue with particular attention to those determinants of rm sizethat might be altered through the adoption of government policies this topic is particularly relevant for latin america a region with one of thelowest rates of growth during the second half of the twentieth century secondonly to the sub saharan countries inter american development bank 2000 ch 1 and where the largest rms in each country are severely undersized notonly by international standards but also in comparison with other developingcountries in fact latin american rms are small with respect to world patterns both in terms of the quantity of assets they control and with respect to the amountof employment they generate the idea that possibilities for business development are more limited inlatin america than in other regions is reinforced by business surveys that assesshow a variety of factors hinder the growth of rms worldwide according to the

the division of labor local markets and worker organization the model developed here explains differences in the degree of the division of labor across local markets for example the typical doctor in one local market may treat a wider range of patients problems than his counterpart in another local market the extent of the division of labor depends on variables affecting the local demand for services two different forms of worker organization cooperation and noncooperation yield divergent results for example specialization increases with the local number of producers under cooperation but may decrease under noncooperation with the number of producers constant local demand variables affect individual specialization under noncooperation but not under cooperation

business collateral and personal commitments in sme lending abstract using a database of sme credit approvals from a large belgian bank this paper extends the empirical evidence on the determinants of collateral by examining the determinants of business collateral simultaneously with the determinants of personal collateral commitments our results suggest that firm and relationship characteristics seem to be more important determinants of collateral commitment protection than loan and lender characteristics family firms are more likely to offer a higher degree of collateral commitment protection while introducing competition between banks decreases this likelihood the collateral requirement decreases in the length of the bank borrower relationship furthermore trade credit seems to have a signalling effect the lazy banks hypothesis was not supported our results suggest that beside risk arguments also commercial arguments help explain the pledging of collateral using a continuation ratio logit model we discover several differences in the determinants of the collateralisation decision and the determinants of the type of collateral commitments

the role of trade and competitiveness measures in us climate policy efforts of the 111th us congress to pass comprehensive climate change legislation although unsuccessful provide insights into the challenges of reaching political agreement on a package for reducing greenhouse gas ghg emissions chief among legislators concerns is the economic burden on their constituents their household energy bills and particularly their jobs perhaps the most vocal interests in the climate debate are the energy intensive manufacturing sectors they argue that the increased costs of carbon pricing will harm their ability to compete in international markets and that trading partners lack of comparable regulation would shift emissions abroad carbon leakage eroding the environmental benefits the salience of those arguments is under scored by statements by senators from industrial states in 2008 ten democratic senators laid out the principles that final legislation should address cost containment relief for working families technology investment equitable treatment of states and prominently enhanced safeguards to ensure a truly equitable and effective global effort that minimizes harm to the us economy and protects american jobs 1

quality trade and growth abstract this paper analyzes the roles of product quality and increasing returns in international division of labor and economic development because the qualities of different intermediate goods are highly complementary in producing the quality of the final good a poor economy will choose to be in autarky if its average level of human capital is sufficiently low thus the heterogeneity of human capital may hamper the division of labor further by linking quality trade and growth this model simultaneously explains the east asian miracle and the empirical finding of conditional convergence

specialization and human capital incentives for specialization trade and the production of comparative advantage through investment are shown to arise from increasing returns to utilization of human capital indivisibilities imply fixed cost elements of investment that are independent of subsequent utilization hence the rate of return is increasing in utilization and is maximized by utilizing specialized skills as intensively as possible identically endowed individuals have incentives to specialize their investments in skills and trade with each other for this reason even if production technology exhibits constant returns to scale

climate cooperation with technology investments and border carbon adjustment a central question in climate policy is whether early investments in low carbon technologies are a useful first step towards a more effective climate agreement in the future we introduce a climate cooperation model with endogenous r d investments where countries protect their international competitiveness via border carbon adjustments bca bca raises the scope for cooperation and leads to a non trivial relation between countries prior r d investments and participation in the coalition we find that early investments in r d render free riding more attractive therefore with delayed cooperation on emission abatement and ex ante r d investments the outcome is often characterized by high participation but inefficiently low technology investments and abatement

an agency theory of the division of managerial labor should responsibility for strategic planning and execution be assigned to the same manager should a firm have a chief operating officer with responsibilities distinct from those of the chief executive officer how does the division of labor affect managerial opportunism this paper uses a formal agency theoretic model to address these questions and present a new theory of the division of managerial labor building on penrose s typology penrose e 2009 the theory of the growth of the firm 4th ed blackwell oxford uk the theory identifies when to assign i entrepreneurial services which relate to strategic planning and the acquisition of resources and ii managerial services which relate to execution to the same generalist manager rather than to different specialists the analysis reveals the critical importance of separability i e whether a supervisor can separately observe the outcomes of entrepreneurial and managerial services if managers and their supervisor have symmetric information about separability hiring a generalist dominates because managerial services which are easier to assess reduce the scope for opportunism associated with entrepreneurial services which are harder to assess conversely if managers have better information regarding separability and the probability of separability is low hiring specialists dominates because hiring a generalist allows the potential for opportunism associated with entrepreneurial services to contaminate the provision of managerial services even so the benefits of hiring a generalist may be restored if the services are sequenced appropriately an implication of such sequencing is that a firm will grow in fits and starts giving rise to a penrose effect even if labor market frictions do not impede the assimilation of new managers

on the design of optimal grandfathering schemes for emission allowances to meet its commitment under the kyoto protocol the eu plans to implement an emissions trading system whith grandfathering of allowances besides having distributional impacts the choice of the grandfathering scheme may affect efficiency if firms anticipate how future allocations depend on upcoming decisions in this paper we determine central design rules for optimal grandfathering within a simple two period model we find that for small open trading systems where allowance prices are exogenous first best second period grandfathering schemes must not depend on firm specific decisions in the first period second best schemes correspond to a ramsey rule of optimal tax differentiation and are generally based on both previous emissions and output however ofr closed emissions trading systems i e endogeneous allowance prices firstand second best rules coincide and must not depend on previous output levels they consist of an assignment proportional to the emissions in the first period plus a term which does not depend on firm specific decisions in either of the two periods

availability of credit to family businesses the paper provides evidence that family own ership is associated with greater availability of credit this may be because family owned businesses are seen by lenders as having fewer moral hazard problems than non family owned businesses one reason for this could be that family owned businesses by definition have a controlling share in the equity of the firm other factors considered important by lenders may be the managerial characteristics and the relatively conservative investment choices of family owned businesses in spite of these advantages family ownership is not associated with a reduction in premiums on the loans the research also highlights differences between outside equity holders and debt holders in their decision to invest in a firm equity holders are known to prefer separation of ownership and control and the possibility of takeovers as this could increase the value of the firm debt holders on the other hand prefer arrangements that ensure continuity and stability family business small business credit rationing

efficient climate policy in the presence of free riders abstract if all countries participate in a climate agreement policies affecting the supply of fossil fuels have identical economic consequences as policies affecting the demand of fossil fuels this is no longer true when there is limited participation in an international agreement in the paper it is assumed that a group of countries commit themselves to cooperating while the remaining countries act independently and in pure self interest the paper compares supply and demand policies in this context and demonstrates that policies which affect only demand or only supply of carbon generally are inferior to policies affecting both demand and supply of carbon the optimal mix of supply and demand policies is derived in the paper with particular emphasis on carbon taxes an important result is that if the marginal environmental costs of total emissions are sufficiently high in the cooperating countries then both production and consumption of carbon should be taxed at a positive rate if on the other hand the marginal environmental costs of total emissions are sufficiently low it may be optimal to subsidize production or consumption in this case production should be subsidized if the cooperating countries are net importers of carbon while consumption should be subsidized if the cooperating countries are net exporters of carbon another important conclusion of the paper is that the cooperating countries should try to induce the non cooperating countries through appropriate transfers to tax consumption and production of carbon at the same rate as in the cooperating countries

pollution content tariffs environmental rent shifting and the control of cross border pollution this paper considers the optimal unilateral policy for a country that imports a good from a neighbouring country and is harmed by pollution generated during the production of that good if the foreign country has a variable abatement technology then home has an incentive to impose a tax on the pollution content of imports a pollution content tariff foreign regulation of pollution does not eliminate home s incentives to intervene but instead may create rent shifting opportunities by making the right to pollute a scarce asset foreign pollution quotas create rents that the home government can try to extract

e commerce productivity and fluctuation abstract this paper studies simultaneous adoption of e commerce and its impact on productivity and economic structure in a general equilibrium model it is found that the lower the fixed cost for establishing and maintaining e commerce and or the higher the degree of improvement in unit transaction efficiency through e commerce the more likely it is that producers will adopt e commerce in addition the adoption of e commerce can increase productivity and trade dependency due to the benefits of fixed cost sharing over a higher trade level and economies of specialization in production reduction in unit transaction cost through e commerce can also increase the level of division of labor and promote structural changes in the economy however as the development of the it sector may reduce fixed cost for e commerce while improving unit transaction efficiency further developments of the it sector can generate fluctuations in economic structure and productivity through e commerce

cost effective unilateral climate policy design size matters given the bleak prospects for a global agreement on mitigating climate change pressure for unilateral abatement is increasing a major challenge is emissions leakage border carbon adjustments and output based allocation of emissions allowances can increase effectiveness of unilateral action but introduce distortions of their own we assess antileakage measures as a function of abatement coalition size we first develop a partial equilibrium analytical framework to see how these instruments affect emissions within and outside the coalition we then employ a computable general equilibrium model of international trade and energy use to assess the strategies as the coalition grows we find that full border adjustments rank first in global cost effectiveness followed by import tariffs and output based rebates the differences across measures and their overall appeal decline as the abatement coalition grows in terms of cost the coalition countries prefer border carbon adjustments countries outside the coalition prefer output based rebates

incentives wages employment and the division of labor in teams we develop a theory of incentives wages and employment in the context of team production a central insight is that specialization and division of labor not only improve productivity but also increase effort and the sensitivity of effort to incentives under moral hazard we show that employment and incentives are complements for the principal when the positive effects of specialization and division of labor outweigh the increase in risk associated with additional employment and are substitutes otherwise we provide new characterizations of the partnership the firm and the role of the budget breaker that are quite different from the classical literature

social status education and growth this paper investigates the implications of social rewards on the allocation of talent in society and consequently on the process of economic growth we consider two sources of heterogeneity among workers nonwage income and innate ability a greater emphasis on status may induce the wrong individuals that is those with low ability and high wealth to acquire schooling causing workers with high ability and low wealth to leave the growth enhancing industries this crowding out effect taken alone discourages growth growth may be enhanced by a more egalitarian distribution of wealth which reduces the demand for status

does family ownership structure affect investment cash flow sensitivity evidence from italian smes abstractthe aim of this article is to investigate whether family control family management and family ownership concentration affect the investment cash flow sensitivity of small and medium sized enterprises smes by analysing a sample of italian smes for the period 2004 2013 i find that family owned businesses are significantly associated with higher investment cash flow dependence this relation however is found to be driven by two distinct factors i the presence of a highly concentrated family ownership ownership concentration channel and ii the active involvement of the family in the business family management channel

the human capital stock a generalized approach this paper presents a new framework for human capital measurement the generalized framework can i substantially amplify the role of human capital in accounting for cross country income dierences and ii reconcile the existing con ict between regression and accounting evidence in assessing the wealth and poverty of nations one natural interpretation emphasizes dierences across economies in the acquisition of advanced knowledge by skilled workers

the provision of collective goods through a social division of labour abstract we develop a general equilibrium framework in which a wide range of collective economic configurations are provided through specialised professionals as part of an endogenously emerging social division of labour we extend the theory of value to this setting bringing together a model of an economy with collective goods with the model of a private goods market economy with an endogenously emerging social division of labour natural applications are the presence of non tradables in production the effects of education on productive abilities and the market system itself as an implementation of the price mechanism for an appropriately generalised notion of valuation equilibrium we prove the two fundamental theorems of welfare economics under very general conditions notably allowing for incomplete non monotonic and non transitive preferences we also incorporate adam smith s principle of increasing returns to specialisation and establish that there emerge well structured social divisions of labour in equilibrium

unilateral climate policy with production based and consumption based carbon emission taxes this paper characterizes a sub global climate coalition s unilateral policy of reaching a given climate damage reduction goal at minimum costs following eichner and pethig j environ econ manag 2013 we set up a two country two period model in which one of the countries represents a climate coalition that implements a binding ceiling on the world s first period emissions the other country is the rest of the world and refrains from taking action the coalition can make use of production based carbon emission taxes in both periods as in eichner and pethig j environ econ manag 2013 but here we consider consumption based carbon emission taxes as an additional instrument the central question is whether and how the coalition employs the consumption based taxes along with the production based taxes in its unilateral cost effective ceiling policy all cost effective policies identified analytically and numerically consist of a mix of both types of taxes implying that there is a tax mix which is less expensive for the coalition than stand alone consumption based or stand alone production based taxes with full cooperation both taxes are perfect substitutes in our model but in case of unilateral action they are imperfect substitutes because coalition s total welfare loss from two different but moderate distortions is smaller than that from a single but severe distortion

emission taxes and optimal refunding schemes abstract we examine how refunding emission taxes to firms dependent on market shares should be designed while refunding is harmful under perfect competition a first best self financing tax tax refunding scheme exists if the marginal damage from pollution exceeds the marginal distortion in an imperfectly competitive output market with symmetric firms under pre investment in cleaner technology with short term abatement opportunities a first best refunding scheme exists if pollution refunding can be made dependent on both market and investment shares

endogenizing the cap in a cap and trade system assessing the agreement on eu ets phase 4 in early 2018 a reform of the world s largest functioning greenhouse gas emissions cap and trade system the eu emissions trading system ets was formally approved the reform changed the main principles of the system by endogenizing the emissions cap we show that the emissions cap is now affected by the allowance demand and is therefore no longer set directly by eu policymakers as a consequence national policies that reduce allowance demand can now reduce long run cumulative emissions which is not possible in a standard cap and trade system using a newly developed dynamic model of the eu ets we show that policies that reduce allowance demand can have substantial effects on cumulative emissions after the reform model simulations also suggest that the reform reduces long run cumulative emissions and to a lesser extent reduces emissions in the short run even so the reform has a small short run impact on the currently large allowance surplus

power couples changes in the locational choice of the college educated 1940 1990 college educated couples are increasingly located in large metropolitan areas these areas were home to 32 percent of all college educated couples in 1940 39 percent in 1970 and 50 percent in 1990 we investigate whether this trend can be explained by increasing urbanization of the college educated or the growth of dual career households and the resulting severity of the colocation problem we argue that the latter explanation is the primary one smaller cities may therefore experience reduced inflows of human capital relative to the past and thus become poorer

the narrow moving band the dutch disease and the competitive consequences of mrs thatcher notes on trade in the presence of dynamic scale economies abstract this paper presents a model of trade in which comparative advantage instead of being determined by underlying attributes of countries evolves over time through learning by doing in this model arbitrary patterns of specialization once established tend to become entrenched over time the model sheds light on three widely held views that do not make sense in more conventional models first is the view that temporary protection of selected sectors can permanently alter the pattern of comparative advantage in the protecting country s favor second is the view that seemingly favorable developments such as the discovery of exportable natural resources may lead to a permanent loss of other sectors and reduce welfare in the long run third is the possibility that a temporary overvaluation of a currency due to tight money can lead to a permanent loss of competitiveness in some sectors

climate clubs overcoming free riding in international climate policy notwithstanding great progress in scientific and economic under standing of climate change it has proven difficult to forge inter national agreements because of free riding as seen in the defunct kyoto protocol this study examines the club as a model for international climate policy based on economic theory and empirical modeling it finds that without sanctions against non participants there are no stable coalitions other than those with minimal abatement by contrast a regime with small trade penalties on non participants a climate club can induce a large stable coalition with high levels of abatement jel q54 q58 k32 k33

unilateral co2 reductions and carbon leakage the consequences of international trade in oil and basic materials a recursively dynamic general equilibrium model featuring six world regions with trade in energy and non energy goods is used to simulate the period from 1990 through 2100 in 10 year intervals the simulations explore the effect of unilateral action by the oecd to curb global co2 emissions unilateral cuts create incentives for free riding by non participating regions so that global emissions are reduced by less than the amount that the oecd cuts back its regional emissions carbon leakage occurs through two channels first basic materials production increases in unconstrained regions resulting in increased carbon intensity of gdp second reductions in oecd oil imports cause the world oil price to fall leading to an increased energy intensity in the non participant regions in this paper we use a general equilibrium model to assess the extent to which these two mechanisms reduce the effectiveness of oecd reductions in curbing global co2 concentrations

strategic shirking a theoretical analysis of multitasking and specialization we provide a new theory to explain why firms multitask workers instead of specializing them workers overperform in tasks they like and underperform in tasks they dislike to favorably influence future job assignments anticipating this firms may find it optimal to commit to future multitasking to induce workers to appropriately allocate effort early in the employment relationship we show that when the product market is volatile so that future product prices are uncertain the firm s ability to credibly commit to a multitasking strategy diminishes this generates a negative relationship between multitasking and product market volatility consistent with recent empirical evidence

climate change policy market structure and carbon leakage abstract the 1997 kyoto protocol on climate change obliges the industrialized countries to initiate the international effort of abating anthropogenic greenhouse gas ghg emissions if such an initiative is to be taken the associated competitive effects may lead to significant relocation of developed countries energy intensive production this paper examines this issue i adopt an oligopolistic structure combined with increasing returns to scale production technologies to represent the strategic interaction among the firms producing energy intensive products this representation is then embedded within a multi regional computable general equilibrium model which in turn is used for quantifying these relocational effects the results suggest that significant relocation of energy intensive industries away from the oecd may occur depending on the type of market structure with leakage rates as high as 130 in which case ghg control policies in the industrialized countries actually lead to higher global emissions

optimal emission pricing in the presence of international spillovers decomposing leakage and terms of trade motives abstract carbon leakage provides an efficiency argument for differentiated emission prices in favor of emission intensive and trade exposed sectors under unilateral climate policy however differential emission pricing can be used as a beggar thy neighbor policy to exploit terms of trade adopting an optimal tax framework we propose a method to decompose the leakage and terms of trade motives for emission price differentiation we employ our method for the quantitative impact assessment of unilateral climate policy based on empirical data we find that the leakage motive yields only small efficiency gains compared to uniform emission pricing likewise the terms of trade motive has rather limited potential for strategic burden shifting we conclude that in many cases the simple first best rule of uniform emission pricing remains a practical guideline for unilateral climate policy design

the dynamics of smithian growth this paper analyzes the evolution of an economy where growth is driven by increased specialization caused by the geographical expansion of markets it proves that such smithian growth exhibits generic threshold behavior below a critical density of transport linkages the economy is split into isolated local markets with limited specialization above the critical density these markets begin to fuse into a large economywide market causing growth to accelerate this allows an explicit test of the consensus among historians of sung dynasty china that the economic revolution during that period was a result of commercialization caused by the creation of a national waterway network

taxing consumption to mitigate carbon leakage this is a post print version of an article published in environmental and resource economics made available in accordance with the copyright policy of the journal publisher no commercial re distribution or re use is allowed this version may contain minor differences from the journal s pdf version

collateral and rationing sorting equilibria in monopolistic and competitive credit markets the authors examine how market structure affects credit allocation under universal risk neutrality and asymmetric information about borrowers they consider both monopolistic and perf ectly competitive banks and examine the role of collateral in each ca se when a bank is a monopolist on the loan side they find collatera l is never used and asymmetric information results in reduced bank le nding under perfect competition collateral has a useful sorting rol e moreover rationing is possible even with collateral availability and perfectly elastic deposit supply in this setting the authors sh ow co signers are valuable social welfare properties of the monopoly and competitive equilibria are also compared copyright 1987 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

why does schooling generate economic growth abstract this paper examines the relationship between schooling and gnp growth found in cross country growth regressions using a standard decompositional technique i divide education s effect on economic growth into three parts 1 an effect from the change in the returns to schooling over time 2 an indirect effect coming from schooling s positive effect on schooling growth and 3 a direct effect coming from education s raising income growth even holding education growth constant the lion s share of the schooling gdp growth connection comes from the schooling schooling growth connection

globalization trade and income my purpose in this paper is to address two questions that confront our discipline repeatedly these days first what is a useful classification of the symptoms and the determinants of globalization a phase used in a remarkable variety of contexts to economists globalization is generally thought of as the increasing internationalization of the production distribution and marketing of goods and services the term is used less precisely in the popular literature perhaps best exemplified by kenichi ohmae s book the borderless world and when used loosely it invokes a wide variety of political sociological environmental and economic trends that are the concern of media attention almost daily however one defines globalization it is surely a development that is having a profound impact on the subject of economics as a whole and ought to have on the field of international economics in particular my second purpose is to ask how globalization is affecting our profession s view of theory and empirical work in international economics traditional trade theory was concerned with a set of fairly well defined questions regarding the determinants of trade the pattern of trade and the welfare consequences of various trade policy instruments the last two decades and perhaps the last decade in particular has led to a much wider interpretation of what living in an open economy means the change that is occurring on a wide range of economic social scientific and

border adjustment for european emissions trading competitiveness and carbon leakage unilateral or sub global policies to combat climate change are potentially sensitive to free riding and carbon leakage one way of dealing with carbon leakage and competitiveness is the imposition of border adjustment measures for competing imports for example in the form of the obligation to importers of goods to purchase and surrender emissions allowances to the authorities when importing in this paper we explore some implications of border adjustment measures in the eu ets for sectors that might be subject to carbon leakage we examine the implications of two variants of these measures on the competitiveness of these sectors and on the global environment with the help of a multi sector multi region computable general equilibrium cge model of the global economy our calculations suggest that border adjustment might reduce the sectoral rate of leakage of the iron and steel industry rather forcefully but that the reduction would be less for the mineral products sector including cement the reduction of the overall or macro rate of leakage would be modest so from an environmental point of view border tax adjustments would not be a very effective policy measure but might mainly be justified by considerations of sectoral competitiveness

comparing policies to combat emissions leakage border carbon adjustments versus rebates we explore conditions determining which anti leakage policies might be more effective complements to domestic greenhouse gas emissions regulation we consider four policies that could be combined with unilateral emissions pricing to counter effects on international competitiveness a border charge on imports a border rebate for exports full border adjustment and domestic output based rebating each option faces different potential legal hurdles in international trade law each also has different economic impacts while all can support competitiveness none is necessarily effective at reducing global emissions nor is it possible to rank order the options effectiveness depends on the relative emissions rates elasticities of substitution and consumption volumes we illustrate these results with simulations for the energy intensive sectors of three different economies the united states canada and europe although most controversial full border adjustment is usually most effective but output based rebating for key manufacturing sectors can achieve many of the gains

on the determinants of credit rationing firm level evidence from transition countries abstract using survey data for firms from eastern european transition economies we investigate the determinants of credit rationing our rationing definition incorporates firms whose loan application was rejected but also discouraged potential borrowers we employ a bivariate probit with censoring approach that accounts for the underlying selectivity since rationed firms are a subset of those without a loan we include firm specific attributes related to the alleviation of informational asymmetries and therefore expected to affect credit rationing we find that credit rationing depends on firm size profitability sales growth ownership type legal status sectoral heterogeneity and the country specific level of domestic credit

why do cities pay more an empirical examination of some competing theories of the urban wage premium abstract ols regression identifies a 19 percent wage advantage for workers in large urban areas fixed effects estimation suggests that two thirds of this premium can be explained by cities attracting workers of higher unmeasured skills and ability the remaining wage premium is shown to consist of both level and growth elements the wage level effect is consistent with a productivity advantage for firms located in cities the wage growth effect is shown to relate in part to a cumulative advantage in the returns to job mobility for urban workers this last finding highlights the importance of coordination in urban labor markets

finance and cluster based industrial development in china abstract china s rapid industrialization over the past several decades which has occurred in the absence of well functioning financial markets seems to defy conventional wisdom on the causal role of finance on industrialization by conducting an in depth case study on a fast growing cashmere sweater cluster in china we show that through clustering an integrated production process can be divided into many incremental steps as a result there is a wide range of investment options in the cluster and in many types of production capital barriers to entry are modest within clusters enterprises can often acquire trade credits from upstream or downstream firms and obtain informal financing from friends and relatives which are used to mitigate working capital constraints local governments can play an active role in providing necessary public goods and promoting cluster growth

do investments in specialized knowledge lead to composite good industries we try to understand why firms producing goods by means of complementary components do not merge especially in industries in which investments in component based knowledge matters as audretsch we state that these activities are developed by individuals who do their best to appropriate the return from their knowledge and whose effort is non contractible the organization of the industry into firms is identified to a partition of the set of individuals in this context we prove that an organization in which each individual hold his own firms is both stable with respect to unilateral deviation and optimal in the line of the property right approach if the returns are high enough this structure is even the only one which shares both properties

economies human capital and natural assets human capital concerns are used to structure links between the economy and the environment suggestions for empirical work to explore these structures are provided particular attention is devoted to connections between environmental hazards and influences upon parents decisions to invest in forming children s human capital

does product complexity matter for firms output volatility abstract with this paper we provide the first micro level evidence on the linkage between firm complexity and volatility by defining product complexity a la hausmann and hidalgo 2009 we find that a higher complexity level of a firm s product basket is associated to a reduction of its output fluctuations this evidence is robust to the control for omitted variables sample selection and to the use of alternative volatility and complexity indicators across similar firms active in different sectors and regions both technological factors and product market conditions explain the effect of complexity on volatility however within narrowly defined sectors and locations the complexity volatility nexus fully reflects the role of the human capital content of firms product baskets

the gains from specialization and population size abstract this note combines three ideas the association of more people with new goods the comparative advantages of individuals and economic happiness people may not be happier in a larger knowledge economy but the gains from specialization are necessarily larger

comparative advantage complexity and volatility abstract less developed countries tend to experience higher output volatility a fact that is in part explained by their specialization in more volatile sectors this paper proposes theoretical explanations for this pattern of specialization with the complexity of the goods playing a central role specifically less developed countries with lower institutional ability to enforce contracts or alternately with low levels of human capital will specialize in less complex goods which are also characterized by higher levels of output volatility we provide novel empirical evidence that less complex industries are indeed more volatile

the benefits of lending relationships evidence from small business data this paper empirically examines how ties between a firm and its creditors affect the availability and cost of funds to the firm we analyze data collected in a survey of small firms by the small business administration the primary benefit of building close ties with an institutional creditor is that the availability of financing increases we find smaller effects on the price of credit attempts to widen the circle of relationships by borrowing from multiple lenders increases the price and reduces the availability of credit in sum relationships are valuable and appear to operate more through quantities rather than prices

on endogenizing long run growth this assessment of recent theoretical work on endogenous growth identifies three different engines of long run growth i the asymptotic average product of capital is positive ii labor productivity increases as an external effect of capital accumulation iii there are feedback effects on the cost of accumulating knowledge or innovating a general model encompassing all three is considered and then used to review different proposed determinants of long run growth rates the contribution of endogenous growth theory has been to create a framework in which to explain why economic institutions and policies can have long run effects on growth rates

sectors under scrutiny evaluation of indicators to assess the risk of carbon leakage in the uk and germany one of the central debates surrounding the design of the european union emissions trading scheme is the approach to address carbon leakage concerns correctly identifying the economic activities exposed to the risk of carbon leakage represents the first step in mitigating the risk effectively this paper assesses the robustness of the quantitative assessment criteria used by the european commission for phase 3 for example we apply the criteria to data for uk and germany and compare the results with the commissions assessment conducted at the aggregated eu level this reveals that sectors exposure risk to carbon leakage can vary across different member states due to differences in production processes technologies and fuel mix process emissions recycling rate differences product mix differences sector classification statistical boundaries activity allocation differences and finally difference in data quality overall we find that relative carbon intensity of sectors measured as cost increase relative to gross value added provides a robust metric the analysis also highlights the importance of using high quality and disaggregated data for this assessment

fragmented division of labor and healthcare costs evidence from moves across regions abstract policies aiming to improve healthcare productivity often focus on reducing care fragmentation care fragmentation occurs when services are spread across many providers potentially making coordination difficult using medicare claims data we analyze the effect of moving to a region with more fragmented care delivery we find that 60 of regional variation in care fragmentation is independent of patients individual demand for care and moving to a region with 1 sd higher fragmentation increases care utilization by 10 when patients move to more fragmented regions they increase their use of specialists and have fewer encounters with primary care physicians more fragmented regions have more intensive care provision on many margins including services sometimes associated with overutilization hospitalizations emergency department visits repeat imaging studies as well as services associated with high value care vaccines guideline concordant for diabetics

robust policies to mitigate carbon leakage abstract unilateral climate policy induces carbon leakage through the relocation of emission intensive and trade exposed industries to regions without emission regulation previous studies suggest that emission pricing combined with border carbon adjustment is a second best instrument and more cost effective than output based rebating we show that the combination of output based rebating and a consumption tax for emission intensive and trade exposed goods can be equivalent with border carbon adjustment moreover it is welfare improving for a region that implements emission pricing along with output based rebating to introduce such a consumption tax the welfare gain is particularly large if output based rebating is already implemented for a sector that is not much exposed to leakage e g due to uncertainty about exposure or due to lobbying activities thus supplementing output based rebating with a consumption tax constitutes robust policies to mitigate carbon leakage

the growing importance of social skills in the labor market the labor market increasingly rewards social skills between 1980 and 2012 jobs requiring high levels of social interaction grew by nearly 12 percentage points as a share of the u s labor force math intensive but less social jobs including many stem occupations shrank by 3 3 percentage points over the same period employment and wage growth were particularly strong for jobs requiring high levels of both math skill and social skills to understand these patterns i develop a model of team production where workers trade tasks to exploit their comparative advantage in the model social skills reduce coordination costs allowing workers to specialize and work together more efficiently the model generates predictions about sorting and the relative returns to skill across occupations which i investigate using data from the nlsy79 and the nlsy97 using a comparable set of skill measures and covariates across survey waves i find that the labor market return to social skills was much greater in the 2000s than in the mid 1980s and 1990s

collateral relationship lending and family firms prior research suggested that relationship lending could play a role in solving asymmetric information problems between borrower and lender other studies suggest a relationship between family ownership and the shareholder bondholder agency conflict the present paper investigates the impact of relationship characteristics family ownership and their interaction effects upon the use of collateral in sme lending we examine the determinants of collateral as well as the determinants of the choice between business and personal collateral using decision tree analysis the results reveal that relationship characteristics have a significant influence but not always in the direction as expected moreover they do not seem to be the primary determinants in our classification models the most important determinants in both classification models seem to be the loan amount total assets and the family versus non family firm distinction in addition we differentiate between line of credit and non line of credit loans and find significant differences between these decision trees

some evidence on the empirical significance of credit rationing this paper examines the credit rationing debate using detailed contract information on over one million commercial bank loans from 1977 to 1988 while commercial loan rates are sticky consistent with rationing this stickiness varies with loan contract terms in ways that are not predicted by equilibrium credit rationing theory in addition the proportion of new loans issued under commitment does not increase significantly when credit markets are tight despite the fact that borrowers without commitments can be rationed whereas commitment borrowers are contractually insulated from rationing overall the data suggest that equilibrium rationing is not a significant macroeconomic phenomenon

the productivity of physician specialization evidence from the medicare program there is increasing concern in the united states with the growth of health care expenditures the rapid rise in expenditures is particularly troubling given that different areas seem to produce the same amount of health care at very different costs in fact a large body of literature documents both wide variation across the country in the quality and quantity of health care produced and the complete absence of a positive relationship between expenditures and the quality of care john wennberg and meagan cooper 1996 jonathan skinner et al 2001 wennberg et al 2002 elliott fisher et al 2003a b baicker and chandra 2004 understanding the factors that drive these differences in use of inputs and productivity in health care is fundamental to designing efficient health care policy potential efficiency gains are particularly important in the context of the aging u s population and the medicare program s mounting fiscal crisis many different inputs contribute to the production of health care including medical personnel technology and patient characteristics one dimension in which the production of health care in different parts of the country varies widely is the use of physician specialists e g cardiologists gastroenterologists those doctors who are not pediatricians or general practitioners for example the hospitals serving the population around louisville kentucky have 30 percent more medical specialists per capita than those serving lexington kentucky but 5 5 percent fewer family practitioners per capita even though the cities have similar geography and demographics and each has a teaching hospital these differences are driven by supply and demand factors in the market both for specialists and for health care more generally gary becker and kevin murphy 1992 develop a general model of specialization which suggests that the degree of specialization in a market should be driven by an equalization of the positive marginal return to specialized knowledge and the growing marginal cost of coordinating specialists this model has testable predictions all else equal areas with the advantage of low costs of coordination such as dense cities should have a higher degree of specialization produce more health care and consequently exhibit better health there are a number of factors that may interfere with the socially efficient use of specialization in the production of health care medicare a major purchaser of health services reimburses physicians using administrative pricing that is often criticized for being out of line with market valuation of the services they provide more directly several federal policies aim to increase the fraction of medical students going into primary care including the specialty of internal medicine the council on graduate medical education 2002 has guidelines on the number and distribution of residencies by specialty and the federal government subsidizes areas with a shortage of primary care physicians through medicare and the national health service corps these policies may introduce distortions that increase the number of specialists furthermore each individual specialist may not take into account the externality that coordination failure imposes by adding congestion to the provision of health care each specialist may compromise the quality of care provided by other physicians a negative spillover that may also lead to too much specialization by contrast if a social planner were making a decision baicker and chandra department of economics dartmouth college hanover nh 03755 dartmouth medical school and national bureau of economic research e mail kbaicker dartmouth edu and achandra dartmouth edu respectively this research was funded by nia grant p01 ag19783 02 we are grateful to elliott fisher jonathan skinner douglas staiger and john wennberg for helpful comments and to dan gottlieb for data support

to b ta or not to b ta on the legality and desirability of border tax adjustments from a trade perspective this paper asks two questions concerning border tax adjustments for climate purposes when viewed from a trade perspective first under what conditions are btas possible in the wto world to address this issue the paper provides a detailed discussion of the relevant law and case law we also apply our main conclusions to what we consider to be paradigmatic cases of measures to address climate change where trade concerns are raised we conclude that the wto regime is no major obstacle to those aspiring to use btas although the allocation of the burden of proof could be a concern the second issue addressed is whether the economic literature on the desirability of btas adequately reflects concerns that have been raised in the trade policy community here we conclude that it has hardly addressed these concerns at all we also point to some aspects of btas that would need to be taken into account in a more complete analysis

emissions taxes versus intensity standards second best environmental policies with incomplete regulation the best emissions tax or emissions cap may be an inferior instrument under incomplete regulation leakage without leakage an intensity standard regulating emissions per unit of output is inferior due to an implicit output subsidy this inefficiency can be eliminated by an additional consumption tax with leakage an intensity standard can dominate the optimal emissions tax since the implicit output subsidy prevents leakage the addition of a consumption tax improves an intensity standard s efficiency may prevent leakage and may be efficient comparing intensity standards to output based updating shows that the latter dominates if updating is sufficiently flexible

the division of labor coordination costs and knowledge this paper considers specialization and the division of labor a more extensive division of labor raises productivity because returns to the time spent on tasks are usually greater to workers who concentrate on a narrower range of skills the traditional discussion of the division of labor emphasizes the limitations to specialization imposed by the extent of the market we claim that the degree of specialization is more often determined by other considerations especially emphasized are various costs of coordinating specialized workers who perform complementary tasks and the amount of general knowledge available