Efficient contract enforcement

We study how the efficient choice of contract enforcement interacts with the efficient allocation of capital in a simple production economy. Contract enforcement makes trade possible but requires an aggregate investment of capital that is no longer available for production. In such an economy, more dispersion in ex-ante marginal products makes it optimal to invest more resources in enforcement. Furthermore, implementing the optimal allocation requires a specific distribution of the cost for enforcement across agents that is not monotonic and results in a redistribution of endowments. At the efficient solution, agents at the bottom of the endowment distribution benefit the most from investment in enforcement and these investments lead to a reduction in consumption and income inequality.     

Endogenous inflows of speculative capital and the optimal currency appreciation path

Abstract This paper examines the optimal appreciation path of an undervalued currency in the presence of speculative capital inflows that are endogenously affected by the appreciation path. A central bank decides its appreciation policy based on three costs: (i) misalignment costs associated with the gap between the actual and long‐run equilibrium exchange rates, (ii) short‐term adjustment costs due to resource reallocation, and (iii) capital losses due to speculative capital inflows. Our model finds (1) when speculators face no liquidity shocks, the central bank tends to appreciate the currency quickly to discourage speculative capital; (2) when speculators face liquidity shocks, the central bank optimally pre‐commits to a slower appreciation path, and the appreciation takes the longest time when the probability of liquidity shocks takes intermediate values; (3) the central bank tends to appreciate the currency more quickly when it conducts discretionary policy.     

Jurisdictional Tax Competition and the Division of Nonrenewable Resource Rents

This paper presents a model of nonrenewable resource extraction across multiple jurisdictions which engage in strategic tax competition. The model incorporates rents due to both resource scarcity and capital scarcity as well as intra-region Ricardian rents. Regions set taxes on nonrenewable resource production strategically to balance tax revenues and local benefits from investment conditional on other regions’ tax rates. A representative extraction firm then allocates production capital across regions and time to maximize the present value of profits. Generally, we find that the division of resource rent between firms and regional governments ultimately depends on the relative scarcity of natural and production capital, relative costs across space, and the value regional governments place on economic activity. This theoretical result provides policymakers with information on the determinants of optimal tax rates and motivates future empirical research on the factors influencing the division of resource rent in practice.     

Child endowments and parental investments: Intra‐household allocation in oportunidades families in Mexico

This paper estimates a family fixed‐effects model to test whether parental educational investments are reinforcing or compensating differences in child height and body mass index (BMI) within Oportunidades households. The results indicate that allocations are not made in response to endowment differences in isolation, but depend on the interaction of child endowment, gender, and beneficiary status. Moreover, investments are made so as to counterbalance efficiency and equity considerations: widening differences in height but closing gaps in BMI, where both strategies maximize returns given the earnings–endowment function for height and BMI in Mexico. Finally, household socio‐economic status matters. Thus, discriminatory responses within the better‐off urban beneficiary households are smaller. In contrast, indigenous beneficiary households, which have the lowest average endowment z‐scores and fraction spent on education, see the largest differences in educational outlay between child subgroups. While the economic effects seem small, these are measured relative to the mean of the base category. In some cases, then, parents are dedicating nearly a quarter of all expenditures to education for a standard deviation increase in endowment over mean sibling endowment. Hence, it seems that the success of the Oportunidades program in improving overall human capital formation may be masking rising inequalities within recipient households.     

经济分权模式下地方政府赶超与劳动收入占比——基于中国省级面板数据的实证分析

文章首先分析了地方政府由竞争而采取的赶超行为对劳动收入占比的影响。在中国特殊的经济分权模式下,这种赶超行为一方面加深了产品市场和要素市场的不完全竞争程度;另一方面由于地方政府没有充分利用资源禀赋的比较优势,而是优先发展重化工等资本密集型产业,从而导致了过快的资本深化。文章然后提出了理论假说,最后运用省际面板数据实证分析了地方政府赶超行为对劳动收入占比的影响。结果表明,地方政府的赶超行为显著降低了劳动报酬份额;另外,文章还发现人力资本存量也与劳动收入占比显著负相关。     

土地调整、地权稳定性与农民长期投资激励

中国的家庭联产承包责任制与农业经济增长之间的关系受到了众多经济学家的关注。现有研究普遍认为土地调整破坏了农民土地使用权的稳定性,从而削弱了农民的长期投资激励。本文将农户的长期投资划分为两类,“与特定地块不相连的长期投资”以及“与特定地块相连的长期投资”,通过实证研究发现,土地调整对农户的这两类长期投资决策的影响是不同的。本文的主要结论有:“减人减地”使农户的第一类长期投资大幅度下降,“增人增地”对农户的第一类长期投资没有什么影响;“减人减地”和“增人增地”对农户的农家肥使用量都没有什么影响。但是,我们并不能把“减人减地”导致的以及大调整所可能导致的第一类长期投资的减少完全归咎于土地调整所导致的低效率。     

Public overspending in higher education

We study the trade-off between governmental investments in pretertiary and tertiary education from an efficiency point of view. We develop a model comprising agents with different incomes and abilities, public and private schools, and public universities that select applicants based on an admission exam. Reallocating governmental resources from tertiary to pretertiary education may positively affect aggregate production and human capital if some conditions are satisfied. For instance, in an economy with a high proportion of credit-constrained students, a reallocation of expenditure toward public schools benefits many students, compensating for the negative effect of a decrease in public university investments. We also quantitatively investigate the optimal allocation of public investment between pretertiary and tertiary education, and we find that a 10% increase in productivity of public investments in pretertiary education could increase the optimal GDP between 2.1% and 3%.     

Welfare and growth impacts of innovation policies in a small, open economy; an applied general equilibrium analysis

We explore how innovation incentives in a small, open economy should be designed in order to achieve the highest welfare and growth. The computable general equilibrium model we develop for the purpose allows for research and development (R&D)-driven endogenous technological change embodied in varieties of capital. We study policy alternatives targeted towards R&D, capital varieties formation, and domestic investments in capital varieties. Subsidising domestic investments, thereby excluding stimuli to world market deliveries, generates less R&D, capital formation, economic growth, and welfare than do the other alternatives, reflecting that the domestic market for capital varieties is limited. In spite of breeding stronger economic growth, a higher number of patents, and a higher share of R&D in total production, direct R&D support generates slightly less welfare than subsidising formation of capital varieties. The costs in terms of welfare relates to a lower production within each variety firm, which in presence of mark-up pricing results in efficiency losses.     

Vertical Integration,Firms’ Entry,Exit, Strategic Shifts,Age, and The Productivity Growth in Korea's Core Growth‐Leading Industries

This study attempts to measure the impact of firms’ entry, exit, strategic shifts, and age on the productivity growth of Korea's three core growth‐leading industries and their vertical integration with capital share (VI) firms and non‐VI (NVI) firms in view of the 2008 global financial crisis and the institutional push by the Korean Government. A stochastic frontier production model was applied to firm‐level panel data from 2006 to 2011 for Korea's automobile, electronics and general machinery industries. The results show that exogenous shocks to the market triggered large‐scale resource reallocations from firms with declining productivity to firms with less declining or rising productivity, and market share reallocation between VI firms and NVI firms. The Korean Government's institutional push led the productivity growth of NVI firms to reach their highest levels in 2010. In a VI structure, a structure comprising VI firms only, the agency problem dominated the synergies of secure supply chains and saving on transaction costs, while NVI firms endeavoured to raise their productivity to step into a VI structure to secure stable supply chains, only to find their R&D initiatives stagnated once they took on the VI structure. Therefore, efficient resource reallocation is hindered by the agency problem within the bounds of vertically integrated industrial structures.     

Growth effects of environmental policy when pollution affects health

In this paper, we develop a R&D-based growth model with a pollution externality and a health production sector. We study how health-impairing pollution affects long term growth, and the effect of an emissions' reduction policy (tax). We show that a tighter environmental tax has positive effects on growth via two channels. On the one hand, it improves workers' health and, thereby, productivity; on the other hand, it induces a reallocation of resources towards R&D and, thereby, higher research intensity. The size of the growth effect of a tighter environmental tax, and the level of the optimal environmental tax, are both positively correlated with the weight individuals place on health relative to consumption. As for welfare, a tighter environmental tax brings about utility gains in the long run and, potentially, also in the short run.     

Why Finance Ministers Favor Carbon Taxes,Even If They Do Not Take Climate Change into Account

Fiscal considerations may shift governmental priorities away from environmental concerns: finance ministers face strong demand for public expenditures such as infrastructure investments but they are constrained by international tax competition. We develop a multi-region model of tax competition and resource extraction to assess the fiscal incentive of imposing a tax on carbon rather than on capital. We explicitly model international capital and resource markets, as well as intertemporal capital accumulation and resource extraction. While fossil resources give rise to scarcity rents, capital does not. With carbon taxes, the rents can be captured and invested in infrastructure, which leads to higher welfare than under capital taxation. This result holds even without modeling environmental damages. It is robust under a variation of the behavioral assumptions of resource importers to coordinate their actions, and a resource exporter’s ability to counteract carbon policies. Further, no green paradox occurs—instead, the carbon tax constitutes a viable green policy, since it postpones extraction and reduces cumulative emissions.     

Intermediation costs and capital flows

In this paper, we modify the standard neoclassical model by incorporating financial intermediation in order to deliver returns consistent with the observation that capital primarily flows to middle income countries. We build a static contracting framework where costly intermediation together with an adverse selection problem have quantitatively important effects on capital flows. When intermediation costs are ignored, the model behaves like the neoclassical model in terms of capital returns. However, when intermediation costs are considered, returns to capital in middle income countries could exceed those in poor and rich countries—high costs of intermediation cause poor countries to concentrate their investments in projects with low returns, while the standard neoclassical effect lowers returns in capital-rich countries. When we embed the return function from the static analysis in a two-country dynamic model, there is capital outflow from a poor country that removes capital controls and becomes open. Even though the closed economy dominates in terms of capital employed in production, it is the open economy that dominates in terms of income, consumption and welfare.     

企业家精神、社会资本与科技型中小企业天生国际化路径研究

企业家精神作为科技型中小企业社会资本基础及内在创业动力,是与企业国际化创业相关联的一种个体特质。从资源基础理论视角,通过理论分析,构建企业家精神、社会资本、资源禀赋与科技型中小企业天生国际化路径关系的概念模型,验证企业家精神与社会资本及其交互作用对天生国际化路径的影响,检验资源禀赋对路径选择的调节作用。研究发现,企业家精神与社会资本都能对天生国际化路径选择产生显著正向影响;资源禀赋正向调节企业家精神与社会资本关系,对科技型中小企业天生国际化路径选择的调节效应显著。     

Skilled–unskilled wage inequality,product variety,public input and increasing returns: A static general equilibrium analysis

The paper develops a four sector small open economy model with two traded final good sectors, a public intermediate good producing sector and a nontraded good sector producing varieties of intermediate goods. There are three primary factors: capital, skilled labour and unskilled labour. Industrial sector producing a traded good uses capital, intermediate goods and skilled labour as inputs. Intermediate goods producing sector also uses capital and skilled labour. Public input producing sector and the agricultural sector producing the other traded good use capital and unskilled labour as inputs. It is shown that, if production technologies are the same for the agricultural sector and the public input producing sector and if the scale elasticity of output is very low, then an increase in capital stock (unskilled labour endowment) raises (lowers) the skilled–unskilled wage ratio. However, an increase in skilled labour endowment does not produce any unambiguous effect. On the other hand, an increase in the tax rate on industrial output and/or an increase in the price of the agricultural product, armed with the same set of assumptions, lowers the skilled–unskilled wage ratio.     

Trade,Wages, and Specific Factors*

In this paper, we use a multisector specific‐factors model with sector‐specific capital and two mobile factors, skilled and unskilled labor, to examine the effects of trade, technology, and factor endowments on the skill premium in US manufacturing industries. Based on this model and data for the US manufacturing sector from 1958–96, we calculate changes in the skill premium and then carry out a decomposition to identify the changes caused by product price changes (trade), technological progress, labor, and capital endowment changes. The decomposition reveals that trade effects, working through product price changes, caused the skill premium to increase moderately. Changes in capital endowments (new investments) had a positive effect on the skill premium, with the strongest impact during the 1980s, while the effect of technological change on the skill premium varied over time. Finally, changes in relative labor endowments had a negative effect on the skill premium.     

中国高新技术企业研发溢出与公司股票收益率:基于吸收能力的实证研究

高新技术企业是中国创新体系中的重要创新主体,其研发活动能够在创新系统中形成溢出效应并影响其它企业的创新活动。运用随机前沿生产函数模型估算高新技术企业对外部研发溢出的吸收能力,利用2009-2015年企业的财务数据和股票行情数据,检验了企业对外部研发溢出的吸收能力对其长期股票收益率的影响。结果表明,在长期层面,企业对外部研发溢出的吸收对其股票收益率有正向滞后性影响。同时,在一定时期内,研发投入对企业吸收能力具有显著正向影响。     

Capital Mobility—Resource Gains or Losses? How,When, and for Whom?

This paper investigates which of the two types of countries—resource‐rich or resource‐poor—gains from capital market integration and capital tax competition. We develop a framework involving vertical linkages through resource‐based inputs as well as international fiscal linkages between the two types of countries. Our analysis shows that capital market integration causes capital flows from resource‐poor to resource‐rich countries and improves global production efficiency. However, such gains accrue only to resource‐poor countries, and capital mobility might even negatively affect resource‐rich countries. Furthermore, we show that resource‐rich countries can exploit the gains when taxes on capital are available.     

Assessing the contribution of public capital to private production: Evidence from the German manufacturing sector

Using time-series cross-section data from the manufacturing sector of the 11 West German 'Bundesländer' (Federal States) from 1970 to 1996, I examine the impact of public capital on private production. My econometric analysis explicitly takes into account four of the most frequent specification issues in the context of time-series crosssection data analysis: serial correlation, groupwise heteroscedasticity, cross-sectional correlation and non-stationarity of data. For all approaches and tested specifications, I find that public capital is a significant input for production in the manufacturing sector. Moreover, I find that differences in public capital endowment can explain long-term differences in productivity across the Bundesländer. One tentative conclusion that can be drawn from this finding is that differences in public capital endowment might also explain a part of the still-existing productivity gap between manufacturing in East and West Germany. However, I emphasise that the existence of positive effects of public capital on private production is a necessary, but not a sufficient condition for concluding that public investments should be boosted in the future.     

Persistent Inequality

When human capital accumulation generates pecuniary externalities across professions, and capital markets are imperfect, persistent inequality in utility and consumption is inevitable in any steady state. This is true irrespective of the degree of divisibility in investments. However, divisibility (or fineness of occupational structure) has implications for both the multiplicity and Pareto-efficiency of steady states. Indivisibilities generate a continuum of inefficient and efficient steady states with varying per capita income. On the other hand, perfect divisibility typically implies the existence of a unique steady state distribution which is Pareto-efficient.     

An experimental study of decisions in dynamic optimization problems

Summary. We study decisions of subjects who are given an incentive to solve dynamic optimization problems with the structure of a single-agent, one-sector, closed economy macroeconomic model. The decision task involves a sequence of choices of consumption and investment levels. Treatment variables consist of the initial endowment of capital stock, the production technology available to the economy, and the method of creating the structure of an infinite-horizon model. The study includes and contrasts data from both American and Japanese participants. We find that whether over- or underinvestment relative to the optimum occurs depends on the production technology, but not on the initial endowment of capital stock, nor the subject pool used, nor the method of implementing the infinite horizon. Sudden episodes of maximal consumption called binges, which are always suboptimal, are widely observed. Received: December 7, 1998; revised version: March 12, 1999