社会抚养比对资本积累和经济增长的影响研究

通过世代交叠模型和内生经济增长理论,将人力资本投资和储蓄内生化,考察社会抚养比对资本积累和经济增长的影响,并利用我国1994~2012年的省级面板数据进行实证检验。结果表明：我国少儿抚养比增加促进人力资本积累进而促进经济增长的作用小于其抑制物质资本积累进而阻碍经济增长的作用;老年抚养比的增加先后“阻碍-促进-阻碍”了我国的经济增长;总抚养比与我国的经济增长负相关。     

Is the Asymptotic Speed of Convergence a Good Proxy for the Transitional Growth Path?

This paper compares transitional dynamics in two alternative R&D non-scale growth models, one with endogenous human capital and the other without. We show that focusing only on the asymptotic speed of convergence to discriminate between the two models' performance can be misleading. Our analysis suggests that a careful study of the entire adjustment paths predicted by alternative growth models starting far away from the balanced-growth path is required in order to successfully discriminate among them.     

The Friedman Rule in a Model with Endogenous Growth and Cash‐in‐Advance Constraint

This paper introduces money into an overlapping‐generations model with endogenous growth. The main message of the paper is that as long as the modified golden rule is attained, the Friedman rule is optimal. The result holds regardless of the ability of the government to internalize the externality and control the level of human capital. Other results include: (i) violation of the Friedman rule for a different second‐best environment wherein human capital accumulation is controlled but not physical capital accumulation and (ii) existence of a negative relationship between money growth rate and the economy’s endogenous growth rate.     

A Tale of Two Growth Engines: Interactive Effects of Monetary Policy and Intellectual Property Rights

How do intellectual property rights that determine the market power of firms influence the growth and welfare effects of monetary policy? To analyze this question, we develop a monetary hybrid endogenous growth model in which R&D and capital accumulation are both engines of long‐run economic growth. We find that monetary expansion hurts economic growth and social welfare by reducing R&D and capital accumulation. Furthermore, a larger market power of firms strengthens these growth and welfare effects of monetary policy through the R&D channel but weakens these effects through the capital‐accumulation channel. Therefore, whether the market power of firms amplifies or mitigates the welfare cost of inflation depends on the relative importance of the two growth engines. Finally, we calibrate the model using data in the United States and the Euro Area to quantitatively evaluate and compare the welfare cost of inflation in these two economies and find that the R&D channel dominates in both economies.     

A competitive model of the informal sector

In developing nations, formal workers tend to be more experienced, more educated, and earn more than informal workers. These facts are often interpreted as evidence that low-skill workers face barriers to entry into the formal sector. Yet, there is little empirical evidence that such barriers are important. This paper describes a model where, in equilibrium, the characteristics of formal and informal workers differ systematically, even though labor markets are perfectly competitive. The informal sector emphasizes low-skill work, as in the data, because informal managers have access to less outside financing, and choose to substitute low-skill labor for physical capital.     

内生增长理论对政府公共支出与经济增长关系的解释——来自中国1952—2011年的经验证据

本文基于内生增长理论（Endogenous Growth Theory）分析政府公共支出与经济增长的关系。基于Barro（1990）提出的框架,但采用Arrowand Kutz（1970）提出的方法,将公共投资通过直接资本形成增加资本存量,形成内生经济增长,并采用Ramsey-Cass-Koopmans（1965）模型的基本假设,利用1952—2011年中国时间序列数据对影响经济增长的因素进行检验。结果显示：政府公共物质资本投入及政府人力资本投入对经济增长均具有正效应,但政府公共物质资本投入对经济增长的效应微弱,而政府人力资本投入对经济增长的效应较大。同时还验证了政府物质资本投入并不是经济增长的格兰杰原因（Granger Cause）,而政府人力资本投资是经济增长的格兰杰原因（Granger Cause）,且影响滞后并持久,教育投入对中国经济增长的影响是长期渗透的。     

Productivity differences and the dynamic effects of labor movements

Barriers to labor mobility across countries coexist with substantial differences in living standards largely attributable to productivity differences. A growth model with endogenous labor movements is used to assess the effects on output, capital accumulation and welfare of removing barriers to labor mobility. The model is parameterized so that it is consistent with evidence on historical labor movements, and is applied to two cases: the enlargement of the European Union and the (hypothetical) creation of a common labor market in the North America. The main finding is that there are large resulting gains in terms of output and welfare.     

Growth, Income Inequality, and Fiscal Policy: What Are the Relevant Trade-offs?

We develop an endogenous growth model with elastic labor supply, in which agents differ in their initial endowments of physical capital. In this context, the growth rate and the distribution of income are jointly determined. We then examine the distributional impact of different ways of financing an investment subsidy. Policies aimed at increasing the growth rate result in a more unequal distribution of pre-tax income, consistent with the positive correlation between income inequality and growth observed in the recent empirical literature. However, there is no conflict between efficiency and equity if inequality is measured in terms of the distribution of welfare.     

实物资本、资本体现式技术进步与经济增长的关系研究

本文通过对安徽省实物资本与经济增长长期变动关系的研究发现,2000年后实物资本的高速增长使实物资本边际报酬与实物资本产出弹性下降速度的有所减缓,因此仔在资本体现式的技术进步阻止了实物资本利用效率的下降。在对实物资本区分为设备资本和建筑资本,并重新核算基础上,利用新古典增长模型测算出安徽省设备资本的边际报酬的变动趋势,分析得出由于仔在设备资本积累引致的资本体现式技术进步,安徽省实物资本加速积累带来的经济增长是有效率的。     

Optimal redistributive tax and education policies in general equilibrium

This paper studies optimal linear and non-linear income taxes and education subsidies in two-type models with endogenous human capital formation, endogenous labor supply, and endogenous wage rates. Assuming constant human capital elasticities, human capital investment should be efficient under optimal linear policies, whether general equilibrium effects are present or not. Hence, education subsidies should not be used for distributional reasons. Due to general equilibrium effects, optimal linear income taxes may even become negative. Optimal non-linear policies exploit general equilibrium effects for redistribution. The high-skilled type optimally has a negative marginal income tax rate and a positive marginal education subsidy. The low-skilled type optimally faces a positive marginal income tax rate and a marginal tax on education. Simulations demonstrate that general equilibrium effects have only a modest effect on optimal non-linear policies.     

智力资本与财务资本:谁对企业价值创造更有效——来自于江浙地区企业的实证研究

财务资本对于企业价值创造的作用是毋庸置疑的,而在知识经济时代,智力资本对于企业价值创造也发挥越来越重要的作用。研究以江苏、浙江等地的企业为分析样本,在智力资本三分法的基础上,通过结构化方程构建了四个嵌套模型。研究结果表明:(1)财务资本对于企业绩效具有重要意义,相对于人力资本更处于核心地位;(2)人力资本不能直接对企业绩效发挥作用,需要通过关系资本和结构资本作为中介;(3)智力资本对于企业绩效的可持续增长具有重要意义,企业要获得长期战略绩效,需要更关注于智力资本的积累与培育。     

Globalization, returns to accumulation and the world distribution of output

This paper examines the extent to which the process of globalization can explain the observed widening in the cross-country distribution of output-per-worker. On the theoretical front the model highlights why, when the labor market is subject to a holdup problem, the opening up of trade will cause an increase in the dispersion of income across countries similar to that observed in the data. The increase in dispersion in the model arises due to the emergence of a discrepancy between the private and social returns to capital accumulation that favors capital abundant countries. On the empirical front, we document the relevance of the model by examining whether growth patterns, decomposition exercises and specialization patterns support the model's predictions. Overall we find that over 50% of the recently observed increase in income dispersion across countries can be accounted for by the mechanism exemplified by the model.     

FDI and Economic Development: Evidence from China’s Regional Growth

Abstract:

Using China’s provincial data for 1978–2011, we examine the channels through which foreign direct investment (FDI) affects China’s regional growth and inequality. We find that FDI facilitates growth by enhancing physical and human capital accumulation. FDI also has a negative effect on output growth by crowding out domestic investment, reducing local government revenue, and increasing the opportunity cost of technology innovations. The imbalance of FDI inflows among regions widens the interregional growth gap through its effect on physical capital accumulation and technology progress while it narrows the growth gap by affecting the level of higher education, industrial structure, government revenue, degree of openness, and trade surplus.     

Endogenous technological progress and the cross-section of stock returns

I study the cross-sectional variation of stock returns and technological progress using a dynamic equilibrium model with production. Technological progress is endogenously driven by research and development (R&D) investment and is composed of two parts. One part is devoted to product innovation; the other, to increasing the productivity of physical investment. The latter is embodied in new tangible capital. The model breaks the symmetry assumed in standard models between tangible and intangible capital, in which the accumulation processes of tangible and intangible capital stock do not affect each other. Qualitatively and, in many cases, quantitatively, the model explains well-documented empirical regularities.     

Endogenous Growth and Real Effects of Monetary Policy: R&D and Physical Capital Complementarities

We study the real long-run effects of the structural stance of monetary policy and of inflation, in the context of a monetary growth model where R&D is complemented with physical capital accumulation. We look into the effects on a set of real macroeconomic variables that have been of interest to policymakers—the economic growth rate, real interest rate, physical investment rate, capital-to-labor ratio, R&D intensity, and velocity of money. These variables have been previously analyzed from the perspective of different, separated, strands of the theoretical and empirical literature. Additionally, we analyze the long-run relationship between inflation and both the effectiveness of real industrial-policy shocks and the market structure, assessed namely by average firm size. We present novel cross-country evidence on the empirical relationship between the latter and long-run inflation.     

The bank capital channel and bank profits

This paper develops a microeconomic model of banking to highlight an endogenous loan creation process that emerges from bank profits via the capital accumulation of retained earnings and uses a simple bank capital‐loan multiplier to illustrate constraints on lending. The study also analyzes how sufficient net interest margins are important for banks to maintain lending portfolios and avoid financial fragility. The model offers support to bank capital channel (BKC) economists by illustrating how changes in interest rates may influence bank lending through the bank's internal capital accumulation growth rate and on a bank's portfolio choices.     

Barriers and the transition to modern growth

This paper argues that barriers affect both the beginning date and the subsequent pace of modern growth, and taking into account this fact enriches our knowledge of cross-country income differences. The model matches the observed inverted U-shape of cross-country income differences, which implies that a substantial fraction of current income differences is transitional. Hence, the model requires smaller barriers to account for current income differences relative to models that focus only on steady states. Empirically, I find that differences in the beginning dates of modern growth explain large differences in incomes.     

Consumption Taxation and Endogenous Growth in a Model with New Generations

This article studies the implications of consumption taxation on capital accumulation in a one-sector endogenous growth model with finite horizons. A tax on consumption, when tax revenues are lump-sum rebated to consumers, redistributes income between living generations and future, still unborn, generations, and therefore depresses aggregate consumption and raises saving, stimulating capital accumulation and economic growth. If however the resources from taxation are used for financing unproductive public spending, the effect of the consumption tax on the endogenous growth rate disappears as no intergenerational redistribution of income occurs. Finally, a consumption tax hike accompanied by a compensatory reduction of public debt increases long-run economic growth and reduces the consumption-output ratio. Our results on consumption taxation differ substantially from those obtained within the endogenous growth literature.     

农村人力资本对农村经济增长贡献的实证分析

对于“人力资本对经济增长具有较大的促进作用”这一观点,国内外学术界已经达成了共识,但是对于“农村人力资本是否对农村产出具有重要贡献”还未形成一致意见。本文首先对农村人力资本现状进行了分析,之后以内生经济增长理论为基础,将人力资本变量引入C-D生产函数模型,运用Eviews软件对人力资本对农村经济增长的贡献进行了实证分析。发现人力资本对农村产出具有显著的正向作用,但贡献率较低,在对其原因进行剖析的基础上,得出了本文的结论并提出对策建议。     

Tax reform and external balance

This paper examines the effect of a transformation from capital taxation to consumption in an open economy. With the residential capital tax rate being endogenous, an increase in the domestic consumption tax rate decreases the interest rate, increases capital accumulation, and increases the domestic country's net foreign asset holdings and trade surplus. With the territorial capital tax rate being endogenous, an increase in the domestic consumption tax rate may either increase or decrease the domestic country's interest rate, net foreign asset holdings and trade surplus, depending on the interest elasticity of capital demand.