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Do Patents Over-Compensate Innovators? 专利是否过度补偿了创新者?
Pub Date : 2007-09-21 DOI: 10.1111/j.1468-0327.2007.00188.x
V. Denicoló
"Is the current level of patent protection too high or too low? To address this issue, this paper reformulates the theoretical analysis of the optimal level of patent protection to take into account the empirical findings of the innovation production function literature. This literature finds a strong relationship between R&D spending and inventions and estimates an elasticity of the supply of inventions of 0.5 or more. The paper then assesses the current level of patent protection, exploiting estimates of the private and social returns to R&D taken from the empirical literature and other available sources. Although more research is needed for a more precise assessment, the evidence available suggests that patents do not over-compensate innovators." Copyright (c) CEPR, CES, MSH, 2007.
“目前的专利保护水平是太高还是太低?为了解决这一问题,本文将创新生产函数文献的实证结果纳入最优专利保护水平的理论分析。本文发现研发支出和发明之间存在很强的关系,并估计发明供给的弹性为0.5或更高。然后,本文评估了当前的专利保护水平,利用了从实证文献和其他可用资源中对研发的私人和社会回报的估计。虽然需要更多的研究来进行更精确的评估,但现有的证据表明,专利并没有过度补偿创新者。”版权所有(c) CEPR, CES, MSH, 2007
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引用次数: 47
Are Aid Agencies Improving? 援助机构在改善吗?
Pub Date : 2007-09-01 DOI: 10.1111/j.1468-0327.2007.00187.x
William R. Easterly
"The record of the aid agencies over time seems to indicate weak evidence of progress in response to learning from experience, new knowledge, or changes in political climate. The few positive results are an increased sensitivity to per capita income of the recipient (although it happened long ago), a decline in the share of food aid, and a decline in aid tying. Most of the other evidence - increasing donor fragmentation, unchanged emphasis on technical assistance, little or no sign of increased selectivity with respect to policies and institutions, the adjustment lending-debt relief imbroglio - suggests an unchanged status quo, lack of response to new knowledge, and repetition of past mistakes." Copyright (c) CEPR, CES, MSH, 2007.
“援助机构长期以来的记录似乎表明,在从经验、新知识或政治气候变化中学习方面取得进展的证据很弱。为数不多的积极成果是提高了对受援国人均收入的敏感度(尽管这是很久以前的事了)、粮食援助份额的下降和援助挂钩的下降。大多数其他证据- -捐助国越来越分散、对技术援助的重视没有改变、在政策和机构方面很少或没有增加选择性的迹象、调整贷款和债务减免的纠缠- -表明现状没有改变、缺乏对新知识的反应和重复过去的错误。”版权所有(c) CEPR, CES, MSH, 2007
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引用次数: 221
Specialization Across Varieties and North-South Competition 跨品种专业化与南北竞争
Pub Date : 2007-08-31 DOI: 10.1111/j.1468-0327.2007.00193.x
L. Fontagné, G. Gaulier, Soledad Zignago
Analyzing a new database that makes it possible to disaggregate trade flows across many countries according to unit values, we show that international specialization in terms of quality within industries and product categories plays an important role in the dynamics of North-South competition. The different specialization of countries at different levels of development within products and across varieties is mirrored in the recent shifts in world market shares, which are very different across quality segments: the South is not gaining market share in high-value portions of trade pattern. In this respect Europe's specialization pattern appears to be different from that of the US and Japan, and may allow it to better resist the competitive pressure of the South.
我们分析了一个新的数据库,该数据库可以根据单位价值对许多国家的贸易流动进行分类,结果表明,在行业和产品类别内的质量方面的国际专业化在南北竞争的动态中起着重要作用。不同发展水平的国家在产品和品种方面的不同专门化反映在最近世界市场份额的变化中,这些变化在质量部分之间差别很大:南方没有在贸易格局的高价值部分获得市场份额。在这方面,欧洲的专业化模式似乎不同于美国和日本,这可能使它能够更好地抵御来自南方的竞争压力。
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引用次数: 183
The Missing Dark Matter in the Wealth of Nations and its Implications for Global Imbalances 国富论中缺失的暗物质及其对全球失衡的影响
Pub Date : 2007-07-01 DOI: 10.1111/j.1468-0327.2007.00182.x
R. Hausmann, F. Sturzenegger
"Current account statistics may not be good indicators of the evolution of a country's net foreign assets and of its external position's sustainability. The value of existing assets may vary independently of current account flows, so-called 'return privileges' may allow some countries to obtain abnormal returns, and mismeasurement of FDI, unreported trade of insurance or liquidity services, and debt relief may also play a role. We analyse the relevant evidence in a large set of countries and periods, and examine measures of net foreign assets obtained by capitalizing the net investment income and then estimating the current account from the changes in this stock of foreign assets. We call dark matter the difference between our measure of net foreign assets and that measured by official statistics. We find it to be important for many countries, analyse its relationship with theoretically relevant factors, and note that the resulting perspective tends to make global net asset positions appear relatively stable." Copyright (c) CEPR, CES, MSH, 2007.
“经常账户统计数据可能不是一个国家净外国资产演变及其外部头寸可持续性的良好指标。现有资产的价值可能独立于经常账户流量而变化,所谓的“回报特权”可能使一些国家获得异常回报,对外国直接投资的错误计量、未报告的保险或流动性服务贸易以及债务减免也可能发挥作用。我们分析了大量国家和时期的相关证据,并通过将净投资收益资本化,然后从这些外国资产存量的变化中估计经常账户,来检验净外国资产的衡量标准。我们称暗物质为我们衡量的净外国资产与官方统计数据之间的差异。我们发现它对许多国家都很重要,分析了它与理论相关因素的关系,并注意到由此得出的观点往往使全球净资产头寸看起来相对稳定。”版权所有(c) CEPR, CES, MSH, 2007
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引用次数: 79
Valuing Ecosystem Services as Productive Inputs 重视生态系统服务作为生产投入
Pub Date : 2007-01-01 DOI: 10.1111/j.1468-0327.2007.00174.x
E. Barbier
"This paper explores two methods for valuing ecosystems by valuing the services that they yield to various categories of user and that are not directly valued in the market, and illustrates the usefulness of these methods with an application to the valuation of mangrove ecosystems in Thailand. The first method is known as the production function approach and relies on the fact that ecosystems may be inputs into the production of other goods or services that are themselves marketed, such as fisheries. I discuss issues that arise in measuring the input into fisheries, particularly those due to the fact that the fishery stock is changing over time, and the shadow value of the ecosystem consists in its contribution to the maintenance of the stock as well as its contribution to current output. The second method is known as the expected damage approach and is used to value the services of storm protection in terms of the reduction in expected future storm damage that the ecosystem can provide. These two methods are shown to yield very different valuations of ecosystems from those that would be derived by the methods typically used in cost-benefit analyses. I argue that they represent a significant improvement on current practice." Copyright (c) CEPR, CES, MSH, 2007.
“本文探讨了两种评估生态系统价值的方法,通过评估生态系统对不同类别的用户产生的服务,以及在市场上没有直接评估的服务,并说明了这些方法在泰国红树林生态系统价值评估中的实用性。第一种方法被称为生产函数方法,它所依据的事实是,生态系统可能被投入到其他商品或服务的生产中,而这些商品或服务本身也在销售,例如渔业。我讨论了在衡量渔业投入时出现的问题,特别是由于渔业种群随着时间的推移而变化的问题,生态系统的影子价值包括其对维持种群的贡献以及对当前产出的贡献。第二种方法被称为预期损害法,用于根据生态系统可以提供的预期未来风暴损害的减少来评估风暴保护服务。这两种方法所产生的生态系统价值与通常用于成本效益分析的方法所产生的价值大不相同。我认为,它们代表着对当前做法的重大改进。”版权所有(c) CEPR, CES, MSH, 2007
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引用次数: 592
Foreign Direct Investment and the Dark Side of Decentralization 外商直接投资与分权的阴暗面
Pub Date : 2007-01-01 DOI: 10.1111/j.1468-0327.2007.00172.x
Sebastian G. Kessing, Kai A. Konrad, Christos Kotsogiannis
"Both in the developed and developing world, decentralization of fiscal policy is frequently argued to foster investment, because allowing investors to choose between competing locations should make it difficult for each jurisdiction to tax the investment's returns. We point out that this 'horizontal' dimension of decentralization cannot eliminate ex post incentives to tax investments once they are irreversibly located in a jurisdiction, and that the negative ex ante investment effects of such 'hold up' problems are actually stronger when decentralization inevitably leads to multiple levels of taxation power in each location. Empirically, we detect significant negative effects on FDI of the 'vertical' dimension of decentralization, measured by the number of government layers, in a data set containing many countries and many suitable control variables. Indicators of overall fiscal decentralization do not appear to affect the investment climate negatively per se, but our theoretical arguments and empirical results suggest that policymakers should consider very carefully the form and degree of government decentralization if they aim at improving the investment climate." Copyright (c) CEPR, CES, MSH, 2007.
“无论是在发达国家还是发展中国家,财政政策的分散化经常被认为是为了促进投资,因为允许投资者在相互竞争的地点之间进行选择,应该会使每个司法管辖区难以对投资回报征税。我们指出,一旦税收投资不可逆转地位于一个司法管辖区,这种分散化的“横向”维度并不能消除对税收投资的事后激励,而且当分散化不可避免地导致每个地方的多层次税收权力时,这种“阻碍”问题的负面事前投资效应实际上会更强。从经验上看,我们在包含许多国家和许多适当控制变量的数据集中,通过政府层数来衡量分权的“垂直”维度,发现了对外国直接投资的显著负面影响。总体财政分权的指标本身似乎不会对投资环境产生负面影响,但我们的理论论点和实证结果表明,如果政策制定者旨在改善投资环境,他们应该非常仔细地考虑政府分权的形式和程度。”版权所有(c) CEPR, CES, MSH, 2007
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引用次数: 62
Capital Deepening and Wage Differentials: Germany versus US 资本深化与工资差异:德国与美国
Pub Date : 2007-01-01 DOI: 10.1111/j.1468-0327.2007.00173.x
Winfried Koeniger, M. Leonardi
Capital deepening may affect the evolution of the wage differential between skilled and unskilled workers differently in countries with different labor market institutions. If labor market institutions raise the relative wage of unskilled workers in Germany, firms have incentives to invest relatively more into capital equipment complementary to unskilled workers. Instead in the US, where wage-compressing institutions are weaker, firms invest more in high-skilled workers. We provide evidence consistent with this view based on an industry panel for West Germany and the US between the 1970s and 1990s. We show that capital equipment per worker is less positively associated with the wage differential in West Germany than in the US. This descriptive evidence is robust to many alternative measures for capital and skills. Our estimates imply that capital deepening in Germany in the 1980s is associated with a reduction in the wage differential of about 10-20% in most industries. In the US instead, capital deepening is associated with an increase of the wage differential between 5 and 15% in most industries.
在劳动力市场制度不同的国家,资本深化对熟练工人和非熟练工人工资差异的影响可能不同。如果劳动力市场制度提高了德国非熟练工人的相对工资,企业就有动力相对更多地投资于与非熟练工人互补的资本设备。相反,在压低工资的机构较弱的美国,企业更多地投资于高技能工人。我们提供了与这一观点一致的证据,这些证据基于上世纪70年代至90年代西德和美国的一个行业小组。我们表明,在西德,人均资本设备与工资差异的正相关程度低于美国。这一描述性证据对许多衡量资本和技能的替代措施都是有力的。我们的估计表明,20世纪80年代德国的资本深化与大多数行业的工资差距缩小了10-20%有关。相反,在美国,资本深化与大多数行业的工资差距扩大了5%至15%有关。
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引用次数: 46
Competition Economics and Antitrust in Europe 欧洲的竞争经济学与反垄断
Pub Date : 2006-10-01 DOI: 10.1111/j.1468-0327.2006.00170.x
D. Neven
type="main" xml:lang="en"> This paper aims to assess the influence that economic analysis has had on competition policy in the European Union over the last twenty years. Economists are increasingly used in antitrust cases; the annual turnover of the main economic consultancy firms has increased by a factor of 20 since the early 1990s and currently exceeds £20 million. This is about 15% of the aggregate fees earned on antitrust cases, a proportion close to that in the US. The economic resources mobilized by the EU Commission are, however, an order of magnitude smaller and this imbalance is a source of concern. The legal framework and the case decisions have also been influenced by economic analysis in important ways. For instance, the analysis of agreements between firms has increasingly focused on effects; the analysis of the factors that determine effective competition has become more sophisticated; the concept of collective dominance has been progressively developed in terms of the theory of collusion in repeated interactions, and quantitative methods have become more important. However, enforcement has sometimes appealed to economic reasoning in flawed or speculative ways; the paper discusses procedural reasons why this may have occurred. This paper assesses the system of evidence gathering implemented by the Commission in the light of the law and economics literature. It is concluded that while the reforms recently implemented by the Commission do address the main weaknesses of this system, they may still not allow for the most effective development of economic theory and evidence in actual cases. — Damien J. Neven
type="main" xml:lang="en">本文旨在评估过去20年来经济分析对欧盟竞争政策的影响。经济学家在反垄断案件中被越来越多地使用;自20世纪90年代初以来,主要经济咨询公司的年营业额增加了20倍,目前已超过2000万英镑。这一比例约为反垄断案件总费用的15%,接近美国的比例。然而,欧盟委员会调动的经济资源要小一个数量级,这种不平衡令人关切。法律框架和案件判决也在重要方面受到经济分析的影响。例如,对公司间协议的分析越来越侧重于影响;对决定有效竞争的因素的分析变得更加复杂;集体优势的概念在重复相互作用中的共谋理论中逐渐发展起来,定量方法变得更加重要。然而,执法有时以有缺陷或投机的方式诉诸经济推理;本文讨论了可能发生这种情况的程序原因。本文结合法学和经济学文献,对欧盟委员会实施的证据收集制度进行了评估。结论是,虽然委员会最近执行的改革确实解决了这一制度的主要弱点,但它们可能仍然不能在实际情况中最有效地发展经济理论和证据。——达米安·j·内文
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引用次数: 113
Twin Deficits: Squaring Theory, Evidence and Common Sense 双重缺陷:平方理论、证据和常识
Pub Date : 2006-10-01 DOI: 10.1111/j.1468-0327.2006.00167.x
G. Corsetti, Gernot Müller
type="main" xml:lang="en"> Simple accounting suggests that shocks to the government budget move the current account in the same direction, and this ‘twin deficits’ intuition leads many observers to call for fiscal consolidation in the US as a necessary measure to reduce the large external imbalance of this country. The response of other macroeconomic variables to budget developments, however, has important implications for ‘twin deficits’ and for this policy prescription. Focusing on the international transmission of fiscal policy shocks via terms of trade changes, we show that the likelihood and magnitude of twin deficits increases with the degree of openness of an economy, and decreases with the persistence of fiscal shocks. We take this insight to the data and investigate the transmission of fiscal shocks in a vector autoregression (VAR) model estimated for Australia, Canada, the UK and the US. We find that in less open countries the external impact of shocks to either government spending or budget deficits is limited, while private investment responds in line with our theoretical prediction. These results suggest that a fiscal retrenchment in the US may have a limited impact on its current external deficit. — Giancarlo Corsetti and Gernot J. Muller
type="main" xml:lang="en">简单的核算表明,对政府预算的冲击会使经常账户向同一方向移动,这种"双赤字"直觉导致许多观察家呼吁美国进行财政整顿,作为减少该国巨大外部失衡的必要措施。然而,其他宏观经济变量对预算发展的反应对“双赤字”和这一政策处方具有重要影响。通过贸易条件变化关注财政政策冲击的国际传导,我们发现双赤字的可能性和规模随着经济开放程度的增加而增加,并随着财政冲击的持续而减少。我们将这一见解带入数据,并在对澳大利亚、加拿大、英国和美国进行估计的向量自回归(VAR)模型中研究财政冲击的传导。我们发现,在不太开放的国家,冲击对政府支出或预算赤字的外部影响是有限的,而私人投资的反应与我们的理论预测一致。这些结果表明,美国的财政紧缩对其当前外部赤字的影响可能有限。-吉安卡洛·科塞蒂和格诺特·穆勒
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引用次数: 319
Does School Tracking Affect Equality of Opportunity? New International Evidence 学校跟踪影响机会均等吗?新的国际证据
Pub Date : 2006-09-01 DOI: 10.1111/j.1468-0327.2007.00189.x
G. Brunello, D. Checchi
This paper investigates whether at the interaction between family background and school tracking affects human capital accumulation. Our a priori view is that more tracking should reinforce the role of parental privilege, and thereby reduce equality of opportunity. Compared to the current literature, which focuses on early outcomes, such as test scores at 13 and 15, we look at later outcomes, including literacy, dropout rates, college enrolment, employability and earnings. While we do not confirm previous results that tracking reinforces family background effects on literacy, we do confirm our view when looking at educational attainment and labour market outcomes. When looking at early wages, we find that parental background effects are stronger when tracking starts earlier. We reconcile the apparently contrasting results on literacy, educational attainment and earnings by arguing that the signalling role of formal education – captured by attainment – matters more than actual skills – measured by literacy – in the early stages of labour market experience.
本文考察了家庭背景与学校跟踪的交互作用是否影响人力资本积累。我们的先验观点是,更多的跟踪会强化父母特权的作用,从而降低机会均等。目前的文献关注的是早期结果,比如13岁和15岁的考试成绩,而我们关注的是后来的结果,包括识字率、辍学率、大学入学率、就业能力和收入。虽然我们不能证实之前的结果,即追踪会强化家庭背景对识字率的影响,但我们确实证实了我们在观察教育程度和劳动力市场结果时的观点。在研究早期工资时,我们发现父母背景的影响在跟踪开始得越早时就越强。我们认为,在劳动力市场经验的早期阶段,正规教育的信号作用(由成就体现)比实际技能(由读写能力衡量)更重要,从而调和了在读写能力、受教育程度和收入方面明显不同的结果。
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引用次数: 654
期刊
Wiley-Blackwell: Economic Policy
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