教育、闲暇与经济增长--理论模型与实证研究

本文通过把消费者时间分为工作时间、教育时间、闲暇时间,重点扩展了闲暇时间对人力资本积累作用和技术进步的外部性,将闲暇时间和教育时间同时引入经济增长模型中分析了两种时间对经济增长的影响和最优平衡增长路径.随后进行了实证研究,结果表明:我国教育时间(即人力资本投资)对中国经济增长有很大的拉动作用,同时,积极健康的闲暇活动能够促进经济增长,但是由于我国处于工业化阶段,对闲暇的偏好还很低,总体上闲暇时间对我国经济增长有微弱的抑制作用.因此,合理安排闲暇活动和正规教育活动对我国经济增长有重要意义.     

Life Insurance,Human Capital Accumulation and Economic Growth

We compare growth rates in the absence and presence of life insurance using an overlapping generations framework with human capital accumulation to clarify how life insurance contributes to economic growth through the education investment of individuals depending on economic circumstances. Our results show that, as expected, the growth rate is higher when there is life insurance if the rate of time preference or the productivity of human capital accumulation is sufficiently low and if the income loss induced from lifetime uncertainty is moderate. However, if the income loss is sufficiently large, the growth rate is lower when there is life insurance.     

Scale Effects,Savings and Factor Shares in a Human Capital-based Growth Model with Physical Capital Accumulation

Using a balanced-growth model with physical and human capital accumulation, we analyze quantitatively the long-run effects of changes in the savings rate and in income distribution (i.e. the shares of physical and human capital in income) on investment in skill acquisition, income growth, and the ratio of human to physical capital. In the long run, the ratio of physical to human capital is constant, so that these two factor inputs can grow at the same rate. This rate is a function of the economy's exogenous technological and preference parameters and depends positively on the share of skills invested in human capital formation. We also find that population growth is neither necessary nor conducive to economic growth, that the level of real income depends linearly on the level of human capital and that it is independent of population size.     

Entrepreneurs, Professionals, and Growth

We examine the implications for growth and development of the existence of two types of human capital: entrepreneurial and professional. Entrepreneurs accumulate human capital through a work-experience intensive process, whereas professionals human capital accumulation is education-intensive. Moreover, the return to entrepreneurship is uncertain. We show how skill-biased technological progress leads to changes in the composition of aggregate human capital; as technology improves, individuals devote less time to the accumulation of human capital through work experience and more to the accumulation of human capital through professional training. Thus, our model explains why entrepreneurs play a relatively more important role in intermediate-income countries and professionals are relatively more abundant in richer economies. It also shows that those countries that initially have too little of either entrepreneurial or professional human capital may end up in a development trap.     

Parental preferences,production technologies,and provision for progeny

This paper theoretically explores the implications of the recent developments in the study of human capital production technologies (Cunha and Heckman, 2007) in intrahousehold human capital investment in children (Becker and Tomes, 1976; Behrman et al., 1982). When credit constraints are not binding, parents adopt a reinforcing intrahousehold investment strategy. When credit constraints are binding, the trade-off between the degree of parental aversion to inequality and the degree of complementarity between pre-natal endowments and family investments determines the parental strategy. The observed investment pattern of reinforcement or compensation does not necessarily reveal the underlying preference or technological parameters. Finally, we discuss empirical methods that may separately identify the preference and technological parameters and discuss the econometric challenges associated with these methods.     

研发人力资本配置与技术创新——异质教育层次视角

在经济增长结构性减速和经济向高质量转型发展背景下，探讨研发人力资本有效配置对中国经济结构转型发展具有重要现实意义。基于中国2009-2018年省际面板数据，根据教育层次异质性，将研发人力资本细分为本科及以下、硕士与博士3种类型，运用静态和动态面板回归模型，从创新总量与细分创新类型视角分析不同教育层次研发人力资本作用于技术创新的差异化特征。统计分析和实证研究表明，中国地区不同教育层次研发人力资本配置不平衡，本科及以下研发人力资本占据主导地位，而本科及以下研发人力资本对地区技术创新具有一定抑制效应，硕士研发人力资本对地区技术创新具有显著正向作用，博士研发人力资本对地区技术创新没有呈现显著正面效应，且相比于硕士研发人力资本具有更低的创新产出弹性，在科研创新效率方面没有体现出预期的教育优势。研究结果对中国高层次人力资本在技术创新中的优化配置和经济结构转型发展具有积极的借鉴意义。     

人力资本对我国全要素生产率增长作用的空间计量研究

通过构建距离衰减的空间权重矩阵,利用空间Benhabib-Spiegel模型探讨人力资本空间溢出对全要素生产率增长的影响,结果表明:人力资本对全要素生产率增长的作用取决于考察省区人力资本水平、邻近省区人力资本水平,以及考虑地理距离的考察省区技术追赶效应;人力资本平均水平对全要素生产率增长起到积极的促进作用,邻近省区人力资本对考察地区TFP增长产生正向空间溢出效应。各省区若要充分发挥人力资本的空间溢出效应,就必须选择均衡适度的人力资本配置结构。     

个人禀赋、制度环境与创业决策:一个实证研究

本文研究发现,返乡者的企业家人力资本、可支配财富、教育程度等个人禀赋因素对创业决策有着重大影响;同时,政府的质量对返乡者的创业倾向也有相当大的影响。虽然上述因素的变化可在边际上大幅度影响返乡者选择自雇型创业的倾向,但对于其规模型创业倾向的影响要弱得多。上述实证结果表明,为了激励创业活动,政府应首先减少腐败和提高办事效率,并充分认识到,自雇型创业而非规模型创业才是最有效的帮助对象。     

Capital income taxation,depreciation allowances and economic growth: A perfect-foresight general equilibrium model

Conclusions The results indicated in Table 1 show that incomplete depreciation allowances reinforce the distortions in the equilibrium growth path brought about by an ideal capital income tax. A reduction in the deductible share of economic depreciation, like an increase in the tax rate, raises the current level of consumption, but reduces the steady state levels of consumption and capital per efficiency unit of labour.The reason for these distortions is that the tax law is able to drive wedges both between the rate of time preference and the market rate of interest, and between the latter and the marginal productivity of capital. The first wedge is created through capital income taxation as such and its size is directly related to the tax rate. The second wedge is created by the incomplete deductibility of depreciation. Its size is directly related to the tax rate and inversely to the deductible share of depreciation. For the distortion in the growth path of the economy it is the sum of the two wedges that counts. Therefore it is plausible that incomplete depreciation allowances reinforce the effects of capital income taxation.Knowing the determinants of the two wedges one can easily derive the influence of a tax reform on the marginal productivity of capital, the market rate of interest and the rate of time preference (cf. Table 2). In the short run, the system of these three interest rates is anchored by the marginal productivity of capital, and hence any measure that widens a wedge is translated into a reduction in the rate or those rates below the wedge. In the long run the system is anchored by the rate of time preference and an increase in the width of a wedge is translated into an increase in those rates or that rate above this wedge.The paper was written in association with the Sonderforschungsbereich 5 (Staatliche Allokationspolitik im marktwirtschaftlichen System).     

Human capital distribution, growth and convergence

This paper studies the dynamic relationship between distribution and endogenous growth in an overlapping generations model with accumulation of human and physical capital. It is shown how human capital can determine a relationship between per capita growth rates and inequality in the distribution of income. Family background effects and spillovers in the transmission of human capital generate dynamics in which aggregate variables depend not only on the stock, but also on the distribution of human capital. The evolution of this distribution over time is then characterized under different assumptions on private returns and the form of the externality in the technology for human capital. Conditions for existence, uniqueness and stability of a constant growth equilibrium with a stationary distribution are derived. Increasing returns, idiosyncratic abilities and the possibility of poverty traps are explicitely characterized in a closed form solution of the equilibrium dynamics, showing the role played by technology and preferences parameters.     

ON DECREASING MARGINAL IMPATIENCE*

One of the most controversial assumptions in endogenous time preference theory is that the degree of impatience is marginally increasing in wealth. We examine the implications of an empirically more relevant specification whereby time preference exhibits decreasing marginal impatience (DMI). With DMI, there are multiple steady‐state non‐satiated and satiated equilibria. In a constant interest rate economy, the non‐satiated steady‐state point is necessarily unstable. In a capital economy with decreasing returns technology, both the non‐satiated and satiated steady‐state points can be saddlepoint stable. The model is used to examine policy implications for the effects of capital taxation and government spending.     

Vintage capital accumulation: Endogenous growth conditions

Optimal vintage capital accumulation is examined here under asymptotic endogenous growth conditions without input parametrization. It is shown that technological embodiment implies endogeneity of innovations. Vintange capital accumulation and time preference are shown to determine the endogenous rate of vintage capital depletion and the rate at which endogenous innovations occur. A vintage-truncation in capital utilization is shown to induce a time-truncation in the infinite-horizon vintage capital accumulation problem. Factor-augmenting technological change is not assumed a priori, but is shown to be a property of optimal vintage selection under balanced growth conditions.     

过度自信调节下董事会人力资本与企业R & D投入关系研究

结合资源依赖理论及冲突理论,以2013-2014年中国创业板149家企业为样本,运用回归分析法考察了董事会人力资本对企业R&D投入的影响,探讨了管理者过度自信在这一过程中的调节作用。结果显示：董事会人力资本广度与企业R&D投入强度显著负相关;②董事会人力资本深度与企业R&D投入强度显著正相关;③管理者过度自信对董事会人力资本深度和广度与企业R&D投入之间的关系皆具有显著的负向调节作用,即管理者过度自信程度越高,董事会人力资本深度对企业R&D投入的促进效用越小,其广度对企业R&D投入的消极作用越强。     

性别偏好与人口转型

人口转型是工业化发展过程中普遍发生的重要经济和社会现象。本文从性别偏好对生育决策的影响这个角度解释了为什么当经济发展到一定程度后,人口生育率会显著下降。本文通过动态一般均衡模型说明了资本积累和技术进步会缩小男女劳动力在生产效率上的差异,从而使男女工资的不平等减少。而性别偏好程度又取决于男女劳动回报的差异,因此经济发展会降低性别偏好的程度,提高女孩对于家庭效用的贡献,这将影响到家庭的生育决策。数值模拟的结果表明,性别偏好程度的下降对人口转型具有重要的影响,当性别偏好程度显著降低时,人口生育率会下降。     

农业龙头企业家人力资本投资的二维研究

农业龙头企业家在城乡统筹发展中扮演着重要角色,农业龙头企业家的技术层面及制度层面的人力资本表明,决定龙头企业家人力资本投资可分为技术维度与关系维度两个维度,企业家人力资本投资的二维组合构成了不同的企业家人力资本模式,提高龙头企业家人力资本要求从营造技术环境与制度环境入手探寻出路.     

智力资本对双元创新协同性的影响:高管团队行为整合的调节作用

首次探讨了智力资本与双元创新协同性(包括双元创新平衡性与双元创新互补性两个维度)之间的因果关系,以及高管团队行为整合对该关系的调节作用,提出了相关研究假设并建立了关系模型,通过问卷调查和统计分析对上述研究假设和关系模型进行了实证检验。结果表明,智力资本及其3个维度(人力资本、组织资本和社会资本)均与双元创新平衡性正相关。其中,人力资本和社会资本均与双元创新互补性正相关;智力资本与双元创新协同性及其两个维度(双元创新平衡性和双元创新互补性)均正相关;高管团队行为整合在智力资本与双元创新平衡性、双元创性互补性以及双元创新协同性间均发挥正向调节作用。     

我国人力资本投资对经济增长的贡献

本文在对人力资本与经济增长的文献综述的基础上,利用我国统计年鉴中有关经济、教育数据计算我国人力资本存量与物质资本存量,并利用有效劳动模型和人力资本外部性模型,估计我国人力资本对经济增长的贡献,发现在我国经济增长过程中,物质资本存量的作用更为关键,而且人力资本投资对经济增长的外部性作用明显。     

Endogenous Time Preference, Inflation, and Capital Accumulation

In an infinitely lived, representative agent model with the Becker-Mulligan (1997) endogenous time preference, this paper reexamines the effects of monetary growth. An increase in the inflation rate reduces the resources spent on imagining the future, which increases the rate of time preference and decreases the steady-state value of capital stock. This model relates inflation and consumer patience, and shows that inflation will make people less patient. Finally, Friedman's optimal monetary growth rule is also investigated and found not to hold.     

我国经济发展方式非均衡特征及优化的政策选择——基于人力资本投资低水平“陷阱”视角的分析

本文以人力资本视角分析我国经济发展方式转变及促进经济可持续性的政策选择。研究表明,人力资本投资在发达国家经济增长方式转型中具有主导性的作用,而改革开放以来我国人力资本投资对经济发展的作用已经落入低水平陷阱,经济发展依赖于物质资本及低端劳动力的数量投入,人力资本与物质资本呈现非均衡特征,而且出现就业压力严峻与人力资本短缺并存的现象,物质资本与人力资本不匹配、人力资本投资结构与人才需求结构错位,以及收入分配与人力资本投资不足等问题日益凸显,经济发展可持续性受到挑战。对此,我国应明确人力资本投资对经济发展方式转变的重要作用和地位,通过增加教育投入、放宽教育准入制度及收入分配改革等渠道,实现人力资本投资的快速增长,促进经济发展方式的优化。     

Child policy ineffectiveness in an overlapping generations small open economy with human capital accumulation and public education

Motivated by the recent decrease in the number of children experienced in several developed countries, in this paper we consider a small open economy model with overlapping generations, endogenous fertility and human capital formation through public education, and look at the role the government can play in affecting fertility through the widely used child allowance policy. Contrary to conventional view, we show that the public provision of child allowances is fertility-neutral in the long run, that is it is not effective as a pro-natalist policy, while also reducing human capital accumulation. In contrast, the financing of the public education system is beneficial to both fertility and human capital. These results hold in the cases of both fixed and time cost of children.