conflict cooperation and commerce the effect of international political interactions on bilateral trade flows the public choice approach to political economy is employed to gain insight into the connection between international politics and trade flows a model is constructed in which importers are assumed to be rational utility maximizers who seek to satisfy international security as well as economic welfare objectives this model of bilateral trade flows reflects contemporary theory in the field of international economics and it explicitly incorporates the general foreign policy orientation of importers among its determinants the model is tested in 16 annual crosssectional estimations 1960 75 for a complete network of 25 countries the findings show considerable support for the hypothesis that trade flows are significantly influenced by broad political relations of amity and enmity between nations the author concludes that nations adjust trade ties to satisfy security as well as economic welfare goals and that a formal political economy of trade should reflect this fact

energy conservation more effective with rebound policy this article sketches the problem of indirect energy use effects also known as rebound of energy conservation there is widespread support for energy conservation especially when it is voluntary as this seems a cheap way to realize environmental and energy climate goals however this overlooks the phenomenon of rebound the topic of energy rebound has mainly attracted attention from energy analysts but has been surprisingly neglected in environmental economics even though economists generally are concerned with indirect or economy wide impacts of technical change and policies this paper presents definitions and interpretations of energy and environmental rebound as well as four fundamental reasons for the existence of the rebound phenomenon it further offers the most complete list of rebound pathways or mechanisms available in the literature in addition it discusses empirical estimates of rebound and addresses the implications of uncertainties and difficulties in assessing rebound suggestions are offered for strategies and public policies to contain rebound it is advised that rebound evaluation is an essential part of environmental policy and project assessments as opposed to earlier studies this paper stresses the relevance of the distinction between energy conservation resulting from autonomous demand changes and from efficiency improvements in technology equipment in addition it argues that rebound is especially relevant for developing countries

optimal taxation in models of endogenous growth we study the problem of optimal taxation in three infinite horizon representative agent endogenous growth models the first model is a convex model in which physical and human capital are perfectly symmetric our second model incorporates elastic labor supply through a lucas style technology analysis of these two models points out the danger of assuming that government expenditures are exogenous in our third model we include government expenditures as a productive input in capital formation showing that the limiting tax rate on capital is no longer zero in numerical simulations we find similar effects on growth and welfare in all three models

comparing four models of aggregate fluctuations due to self fulfilling expectations abstract this paper compares four equilibrium business cycle models with increasing returns to scale production technologies that allow for aggregate fluctuations due to self fulfilling expectations necessary and sufficient conditions for the existence of stationary sunspot equilibria are derived numerical examples demonstrate that the degree of increasing returns necessary for the existence of stationary sunspot equilibria lies in the upper range of available empirical estimates the paper also shows that persistent fluctuations are not a necessary property of these four models when the only source of fluctuations is changes in people s expectations about the future path of the economy journal of economic literature classification numbers e32 d43

endogenous markups and the effects of income taxation theory and evidence from oecd countries abstract existing studies on the effects of fiscal policy under imperfect competition typically treat each firm s price cost markup as fixed this paper examines the implications of endogenising the markup in a simple model of income taxation under monopolistic competition it is demonstrated that an increase in income tax reduces the number of firms lessens competition among surviving firms and raises the optimal markups in the new steady state through this channel the effects of income taxation on the key macroeconomic variables as well as on consumer welfare are unambiguously enlarged the simple model prediction is largely supported by cross section regressions with data from oecd countries

taste for diversity and the optimality of economic growth abstract we disentangle the taste for diversity in consumption present in endogenous growth models with expanding product variety from the elasticity of substitution between consumption goods this seriously affects the welfare analysis of the model if taste for diversity is relatively small the market rate of growth may be suboptimally large

correction to the political determinants of international trade efforts to replicate our study of the effects of politics on trade flows between the major powers have revealed that the computer program written to calculate the estimates produced errors in both the coefficients and the standard errors furthermore these errors have some consequences for the results in this brief corrigendum we present corrected tables for our research note and a slightly modified interpretation of the results our study examined evidence to assess three arguments about how politics may affect trade the first contends that positive political relations in a dyad result in higher levels of trade this argument leads to two hypotheses states in conflict will have a lower level of trade than those not in conflict and trade will increase with the degree of common interests between a pair of states the second argument concludes that democratic dyads will have a higher level of trade than other dyads the third argument focuses on the security concerns of states and leads to the hypotheses that alliances will increase trade in a bipolar system but will have no effect in a multipolar system we refer readers to the original article for a fuller statement of the logic of these arguments their respective hypotheses and a complete statement of our research design and operationalization of the variables morrow siverson and tabares 1998

taste for variety and optimum production patterns in monopolistic competition abstract many positive and normative results in models using the monopolistic competition framework of the dixit stiglitz spence type depend on the value of an important parameter the taste for variety in these models however the taste for variety is linked in a close but arbitrary manner to the degree of market power of monopolistic competitors in this paper we make a simple modification to the basic model which clearly disentangles taste for variety and market power we then show how this changes the usual comparisons between social optimum and market outcomes

redistributive taxation in a simple perfect foresight model abstract we investigate the redistributive potential of capital taxation in an intertemporal maximizing model of capital formation first even unanticipated redistributive capital taxation is severely limited in its effectiveness since it depresses wages second under any convergent redistributive tax policy which maximizes a paretian social objective the capital income tax will converge to zero independent of the factor supply elasticities these results are independent of workers holdings of capital

endogenous market structures and optimal taxation this article provides optimal labour and dividend income taxation in a general equilibrium model with oligopolistic competition and endogenous firms entry in the long run the optimal dividend income tax corrects for inefficient entry the dividend income tax depends on the form of competition and the nature of the sunk entry costs in particular it is higher in market structures characterised by competition in quantities rather than those characterised by price competition oligopolistic competition leads to an endogenous countercyclical price markup as a result offsetting the distortions over the business cycle requires deviations from full tax smoothing

the political determinants of international trade the major powers 1907 1990 we test three arguments about the effect of international politics on trade flows the first argument states that trade flows are greater between states with similar interests than those with dissimilar interests the second that trade flows are greater in democratic dyads than nondemocratic dyads and the third that trade flows are greater between allies we examine trade flows between the major powers from 1907 to 1990 this period provides variation on all three independent variables of interest and allows us to separate the three arguments empirically we estimate a gravity model of trade with the above political variables added our results demonstrate that joint democracy and common interests increase trade in a dyad but alliances generally do not even when controlling for polarity of the system

dealing with environmental savings in a dynamical economy how to stop chasing your tail in the pursuit of sustainability abstract in most countries people are urged to change their pattern of consumption and lifestyle in a less energy consuming and more environmental friendly direction but gains in ecoefficiency are likely to be annihilated by a larger consumption the so called rebound effect resulting in an increased throughput in the economy here is an obvious contradiction another contradiction entails from the fact that most governments strive to promote economic growth which includes increased consumption the paper takes a look at various means to handle these contradictions in order to avoid or balance the rebound effect environmental policies including such measures as green taxes may redirect consumption from one kind to another but this demands that the alternative spending is less harmful than the one dissuaded from two other tested means are to alter the sector mix of the economy and to shorten the working hours work sharing to match the increasing efficiency

taxation of economic rents economic rents have long been identified as an efficient tax base in addition the recent literature documents that rent income is highly concentrated and that rents are quickly increasing rent taxation thus seems attractive for reasons of both efficiency and equity nevertheless rent taxation remains a marginal topic in research and policy making in a systematic review of the neoclassical literature on different rent types we find that some types of rents reflect inefficiencies and should thus be minimized while others reward investments and should be supported in line with social welfare what remains for taxation are land rents one of the few true scarcity rents land rents have significant potential to improve the efficiency of the tax system we then begin to develop a comprehensive theory of land rent taxation by identifying relevant efficiency and equity effects the interaction of many of these effects remains unexplored which might explain policymakers hesitation in using land taxes to date

capital income taxation with imperfect competition a key feature of modern dynamic economies is imperfect competition some imperfect competition is due to institutions such as patents and copyrights that allow firms to exercise market power over the sale of products they invent some imperfect competition is due to various forms of increasing returns to scale and product differentiation since market power is an essential feature of innovation and growth in the new economy as it was in the old economy we need to know how imperfect competition affects the conventional wisdom on tax policy i argue that it has particularly striking implications for the taxation of capital the current consensus among economists is

how did wars dampen trade in the mena region abstractthe article investigates the impact of wars on trade in the middle east and north african region using an augmented gravity model that controls for the endogeneity problem in our estimation we introduce a war variable and distinguish between different types of conflicts the results show that wars have a significantly negative impact on exports imports and trade civil conflicts hinder exports imports and trade significantly the disaggregated version of the gravity model shows that non state conflicts have a detrimental effect on bilateral trade flows in manufacturing and that none of the conflicts do affect trade in services we also find that on average a conflict is equivalent to a tariff of 5 of the value of trade

how much does violence tax trade abstract we investigate the empirical effect of violence as compared to other trade impediments on trade flows our analysis is based on a panel data set with annual observations on 177 countries from 1968 to 1999 which brings together information from the rose data set the iterate data set for terrorist events and data sets of external and internal conflict we explore these data with traditional and theoretical gravity models we calculate that for a given country year the presence of terrorism together with internal and external conflict is equivalent to as much as a 30 tariff on trade this is larger than estimated tariff equivalent costs of border and language barriers and tariff equivalent reduction through generalized systems of preference and wto participation

alliances preferential trading arrangements and international trade c oncerns about the stability of the international trading system have become widespread in recent years many observers feel that the relatively liberal system forged after world war ii is being undermined by the proliferation of preferential trading arrangements these concerns have spawned a great deal of empirical research much of which has found that such arrangements exert a substantial effect on trade flows yet these studies have neglected the role political military alliances play in shaping patterns of commerce this omission is important because there is ample reason to expect that alliances guide trade flows and preferential trading arrangements often are comprised of allies as a result extant analyses risk confusing the effects of alliances and preferential trading arrangements on commerce and systematically overstating the effects of the latter in this study we analyze the effects of alliances and preferential trading arrangements on bilateral trade flows both factors are likely to promote trade among members but we argue that the interaction between them is central to explaining patterns of commerce the combination of an alliance which creates political incentives for participants to engage in trade and a commercial institution which liberalizes trade among members is expected to provide a considerable impetus to commerce among parties to both 1

is there always too little research in endogenous growth with expanding product variety abstract it is generally believed that models of endogenous growth with expanding product variety typically yield a too low level of research we show here that this result is due to the implicit choice of a particular value for a crucial parameter once this parameter is set free one finds that too much research can occur as well

happy degrowth through more amateur economy abstract this paper outlines a simple aggregate descriptive model of what is here termed a whole economy covering all human involvement in the economy from ultimate means or ecological sacrifices to the ultimate ends of human satisfaction the model embraces not only the formal professional economy driven by money but also the parallel non paid voluntary economy here termed amateur economy driven by peoples affective motivations the input of work to the economy plays an essential role in the paper s analysis of options for reducing ecological sacrifices hence part of the paper is devoted to a brief historical overview of the role of work including turning points in the 1930s in the united states when work sharing was displaced by work creation through consumerism and in the post war economy when gdp became the dominant economic indicator the paper proposes the aim of a happy and sustainable degrowth for affluent countries implying the transfer of some activities from the professional economy to the less labor productive amateur economy this will tend to reduce overall labor productivity and hence resource throughput but increase satisfaction and happiness a key element in the analysis is combining a reduction in consumption with a reduction in production which is obtainable through lowering either working time or work productivity and turning some of the leisure time into voluntary activities economic growth is not a law of nature but the consequence of explicit political decisions taken hence growth is also open to new political decisions in recognition of physical limits to growth and the human quest for replacing economic growth with life satisfaction including increased free time

investing in the peace economic interdependence and international conflict research appears to substantiate the liberal conviction that trade fosters global peace still existing understanding of linkages between cone ict and international economics is limited in at least two ways first cross border economic relationships are far broader than just trade global capital markets dwarf the exchange of goods and services and states engage in varying degrees of monetary policy coordination second the manner in which economics is said to inhibit cone ict behavior is implausible in light of new analytical insights about the causes of war we discuss and then demonstrate formally how interdependence can ine uence states recourse to military violence the risk of disrupting economic linkages particularly access to capital may occasionally deter minor contests between interdependent states but such opportunity costs will typically fail to preclude militarized disputes instead interdependence offers nonmilitarized avenues for communicating resolve through costly signaling our quantitative results show that capital interdependence contributes to peace independent of the effects of trade democracy interest and other variables students of world politics have long argued that peace is a positive externality of global commerce theorists like montesquieu and kant and practitioners like woodrow wilson asserted that economic relations between states pacify political interaction mounting evidence in recent years appears to substantiate these claims multiple studies many identie ed with the democratic peace link interstate trade with reductions in militarized disputes or wars 1 while we concur with the evolving

monopolistic competition and the effects of aggregate demand how important is monopolistic competition to an understanding of the effects of aggregate demand on output we ask the question at three levels can monopolistic competition by itself explain why aggregate demand movements affect output can it together with other imperfections generate effects of aggregate demand in a way that perfect competition cannot if so can it give an accurate account of the response of the economy to aggregate demand movements the answers are no yes and yes

does trade still follow the flag t he economic ties between any two nations are frequently affected by a warming or cooling of bilateral diplomatic relations but there is little to be found in modern economics or political science that helps us understand the connections between international politics and commerce the notion that international economics could be studied in isolation from its political underpinnings or consequences would have been quite alien to mercantilist thinkers in the eighteenth century or to the critics or advocates of imperialism in the nineteenth that economics and politics were inextricably intertwined was taken as a matter of course indeed trade follows the flag was central to these people s understanding of world politics and international economics intellectual trends over the past century radically changed this worldview the ascendancy of liberalism in economic thought brought with it a compartmentalization of disciplines that may now be eroding but we are left with theories of international politics and economics that are very weakly bridged the objective of this study is to map one of the many connections between international politics and commercial ties specifically i seek to identify and measure the effect of changes in state to state diplomatic relations on trade flows between those nations theoretical underpinnings of my effort are in the tradition of public choice political economy frey 1984 because i treat importers as rational utility maximizers and their behavior as determined by preferences pursued within a context of specified constraints the model i put forward is wholly consistent with contemporary neoclassical trade theory but i extend the economists notion of welfare and contend that importers take account not only of the price and quantity of goods and services but of the place of origin of these products and the political relationship between the importing and the exporting nation they do so essentially for traditional security reasons that is importers are motivated to manage their trade relations in ways that minimize risks of disruption in supply or the possibility of hurting friends or

optimal indirect and capital taxation we consider an environment in which agents skills are private information and follow arbitrary stochastic processes we prove that it is typically pareto optimal for an individual s marginal benefit of investing in capital to exceed his marginal cost of doing so this wedge is consistent with a positive tax on capital income we also prove that it is pareto optimal for the marginal rate of substitution between any two consumption goods to equal the marginal rate of transformation this lack of a wedge is consistent with uniform taxation of consumption goods within a period

make trade not war this paper analyses theoretically and empirically the relationship between military conflicts and trade we show that the conventional wisdom that trade promotes peace is only partially true even in a model where trade is economically beneficial military conflicts reduce trade and leaders are rational when war can occur because of the presence of asymmetric information the probability of escalation is lower for countries that trade more bilaterally because of the opportunity cost associated with the loss of trade gains however countries more open to global trade have a higher probability of war because multilateral trade openness decreases bilateral dependence to any given country and the cost of a bilateral conflict we test our predictions on a large data set of military conflicts on the 1950 2000 period using different strategies to solve the endogeneity issues including instrumental variables we find robust evidence for the contrasting effects of bilateral and multilateral trade openness for proximate countries we find that trade has had a surprisingly large effect on their probability of military conflict

positive and negative feedback in consequential life cycle assessment abstract in this paper we develop a typology of consequences that can be used for environmental assessments of investment in technologies as an illustration we estimate how the inclusion of different cause effect chains could affect the estimated greenhouse gas emissions resulting from buying and using a fuel cell bus today in contrast to earlier studies we include cause effect chains containing positive feedback from adoption e g economies of scale and learning we discuss how our findings affect the usefulness and limitations of consequential life cycle assessment lca and how lca methodology in more general can be used to support strategic technology choice a major conclusion is that environmental assessments of investment in emerging technologies should not only include effects resulting from marginal change of the current system but also marginal contributions to radical system change

what determines aggregate returns to scale abstract this paper develops a unified framework that incorporates four features important in existing models with increasing returns fixed costs decreasing marginal costs product variety and market power when fixed costs are not allowed to vary and profits are imposed to be zero in every period only the degree of returns to variety determines the degree of aggregate increasing returns to scale when fixed costs respond to changes in aggregate activity or the zero profit condition does not hold in the short run aggregate returns depend not only on product variety but also on diminishing marginal costs or market power the degree of market power however does not affect input prices which are critical to determine the uniqueness of equilibrium

optimal taxation of capital income with imperfectly competitive product markets abstract we show that the steady state optimal tax on capital income can be negative positive or zero in a neoclassical growth model that allows for imperfectly competitive product markets the sign of the optimal tax rate depends crucially on 1 the degree of monopoly power 2 the extent to which monopoly profits can be taxed 3 the size of the depreciation allowance and 4 the magnitude of government expenditures for an empirically plausible set of parameters we find that the steady state optimal capital tax can range between 10 and 22

optimal taxation of capital income in general equilibrium with infinite lives this paper analyzes the optimal tax on capital income in general equilibrium models of the second best agents have infinite lives and utility functions which are extensions from the koopmans form the population is heterogeneous the important property of the models is the equality between the social and the private discount rates in the long run i find that the optimal tax rate is zero in the long run for a special case of additively separable utility functions i then determine the tax rates along the dynamic path and conditions that are sufficient for the local stability of the steady state

trade blocs trade flows and international conflict the relationship between foreign trade and political conflict has been a persistent source of controversy among scholars of international relations existing empirical studies of this topic have focused on the effects of trade flows on conflict but they have largely ignored the institutional context in which trade is conducted in this article we present some initial quantitative results pertaining to the influence on military disputes of preferential trading arrangements ptas a broad class of commercial institutions that includes free trade areas common markets and customs unions we argue that parties to the same pta are less prone to disputes than other states and that hostilities between pta members are less likely to occur as trade flows rise between them moreover we maintain that heightened commerce is more likely to inhibit conflict between states that belong to the same preferential grouping than between states that do not our results accord with this argument based on an analysis of the period since world war ii we find that trade flows have relatively little effect on the likelihood of disputes between states that do not participate in the same pta within ptas however there is a strong inverse relationship between commerce and conflict parties to such an arrangement are less likely to engage in hostilities than other states and the likelihood of a military dispute dips markedly as trade increases between them

a time use perspective on the materials intensity of consumption abstract the ecological requirements to drastically increase the productivity of materials use call for improvements in the efficiency of consumption this eco efficiency discussion often takes a functional view on consumption noting that present consumption is inefficient and that it is not the products that the consumers want but the services that the products yield however contemporary consumption serves many needs that are not functional and universal but subjective and obscured from the producers this paper develops a time use approach towards consumption which makes allowance for the subjectivity of needs while still enabling the analysts to approach the concept of a sustainable lifestyle a distinctive premise of the analysis is that it assumes time and money not to be interchangeable and consumption to be limited by available consumption time instead of purchasing power this approach is demonstrated by linking the direct and the indirect energy use of finnish two person households to the data of a national time use survey the results are used to point out some of the potential time use rebound effects of such new eco efficient services that transfer activities from private households to the market actors

optimal taxation with imperfect competition and aggregate returns to specialization in this paper we explore the proposition that in economies with imperfect competitive markets the optimal capital income tax is negative and the optimal tax on firms profits is confiscatory we show that if the total factor productivity as well as the measure of firms or varieties are endogenous instead of fixed then the optimal fiscal policy can lead to different results the government faces a trade off between the fixed costs that the society pays for the

dynamic scoring a back of the envelope guide abstract this paper uses the neoclassical growth model to examine the extent to which a tax cut pays for itself through higher economic growth the model yields simple expressions for the steady state feedback effect of a tax cut the feedback is surprisingly large for standard parameter values half of a capital tax cut is self financing the paper considers various generalizations of the basic model including elastic labor supply general production technologies departures from infinite horizons and non neoclassical production settings it also examines how the steady state results are modified when one considers the transition path to the steady state

the sufficiency strategy would rich world frugality lower environmental impact abstract one alleged weapon against unsustainable environmental impact is for the wealthy to consume less this sufficiency strategy is to complement the efficiency strategy of lowering ratios of resource inputs to economic outputs the former would reduce the affluence factor in i pat the latter the technology factor that the latter strategy suffers from a consumption rebound is widely recognized this paper identifies a similar rebound when the affluence factor is autonomously lowered the lower initial demand lowers prices which in turn stimulates new demand by others the strategy moreover addresses only the rich raising questions of its theoretical maximum efficacy its proponents usually conflate frugality with the north south dichotomy and intra generational with inter generational equity moreover there are difficulties with the supporting arguments that frugality is good for one s own sake as well as for the environment and that the rich should lead the way to living more lightly personal behaviour change is furthermore not a substitute for international political efforts finally since all changes in right side factors of the i pat equation change other right side factors such indirect attacks on impact should be abandoned in favor of supply and emissions quotas