Trade, Human Capital, and Technology Spillovers: an Industry-level Analysis

This paper studies whether trade promotes North–South and South–South technology spillovers at the industry level, and how the absorptive capacity of the South affects the impact of the technology spillovers. Using data from 16 manufacturing industries in 25 developing countries from 1976 to 1998, the paper shows: (i) North–South trade‐related R&D has a substantial impact on total factor productivity in the South; (ii) South–South trade‐related R&D also promotes technology spillovers but with a smaller magnitude; and (iii) human capital is very important in facilitating North–South and South–South technology spillovers: an increase in human capital could lead to over three times the size of technology spillovers from an increase in trade‐related foreign R&D.     

Do R&D activities matter for productivity? A regional spatial approach assessing the role of human and social capital

We estimate the long-run effects of Research and Development (R&D) activities on Total Factor Productivity (TFP) across the Spanish regions during 1980–2007. We use panel data cointegration methods and control for spatial externalities linked to human and social capital. Our empirical results, robust to different specifications and additional control variables, show a significant direct effect of public R&D capital on productivity. No significant results are observed for private R&D capital. In contrast, the effect of patents is highly significant but proves to be small. Furthermore, Spain has greatly benefited from importing technology from leading countries. Spatial spillovers are crucial in explaining long-run productivity for the case of Spain. Human and social capital exert direct positive impacts, however, their effects are geographically bounded and negative spatial spillovers offset direct outcomes. Overall TFP increases when neighbouring territories engage in R&D activities.     

Do education quality and spillovers matter? Evidence on human capital and productivity in Greece

This paper estimates production functions for Greek regions over 1971–2011, using census data on educational human capital. We construct rich human capital series, where data for employees are decomposed according to their education level. In addition, we take into account possible effects due to education quality and spillovers. Our evidence shows that human capital has a strong positive association with labor productivity through upper secondary and tertiary education, while primary education exhibits a negative relationship and lower secondary education does not exhibit any association with productivity. Tertiary education spillovers along with a number of education quality indicators present a significant positive relationship with productivity. Overall, findings suggest that policy makers should account for education quality as well as spillovers and direct their efforts toward a more efficient and enhanced education system with emphasis on high education levels to improve labor productivity overall and reduce spatial productivity disparities.     

Regional productivity variation and the impact of public capital stock: an analysis with spatial interaction,with reference to Spain

In this article, we examine whether variations in the level of public capital across Spain's Provinces affected productivity levels over the period 1996 to 2005. The analysis is motivated by contemporary urban economics theory, involving a production function for the competitive sector of the economy (‘industry’) which includes the level of composite services derived from ‘service’ firms under monopolistic competition. The outcome is potentially increasing returns to scale resulting from pecuniary externalities deriving from internal increasing returns in the monopolistic competition sector. We extend the production function by also making (log) labour efficiency a function of (log) total public capital stock and (log) human capital stock, leading to a simple and empirically tractable reduced form linking productivity level to density of employment, human capital and public capital stock. The model is further extended to include technological externalities or spillovers across provinces. Using panel data methodology, we find significant elasticities for total capital stock and for human capital stock, and a significant impact for employment density. The finding that the effect of public capital is significantly different from zero, indicating that it has a direct effect even after controlling for employment density, is contrary to some of the earlier research findings which leave the question of the impact of public capital unresolved.     

Knowledge spillovers through FDI and trade: the moderating role of quality-adjusted human capital

The paper extends the findings of the Coe and Helpman (Eur Econ Rev 39(5):859-887, 1995) model of R&D spillovers by considering foreign direct investment (FDI) as a channel for knowledge spillovers in addition to imports. Deeper insights on the issue are provided by examining the inter-relationship between knowledge spillovers from imports and inward FDI. Furthermore, human capital is added to the discussion as one of the appropriability factors for knowledge spillovers, with special focus on its quality-content, using journal publications and patent applications. Applying cointegration estimation method on 20 European countries from 1995 to 2010, the direct effects of FDI-related as well as import-related spillovers on domestic productivity are confirmed. Furthermore, a strong complementary relationship is found between knowledge spillovers through the channels of imports and inward FDI. When considering quality-adjusted human capital, countries with better human capital are found to benefit not only from direct productivity effects, but also from absorption and transmission of international knowledge spillovers through imports and inward FDI. Finally, technological distance with the frontier does not appear to play a role in the absorption of import and FDI related knowledge spillovers.     

中国制造业外资生产率溢出的条件性研究

FDI生产率溢出存在与否的问题实际上是东道国企业有无条件吸收溢出的问题，本研究从行业内溢出和地区行业间溢出两个方面进行溢出条件性考察。通过对1998-2003年中国制造业分地区四位码行业水平上的面板数据分析后发现，生产率溢出更多地从本地区其他行业的外资参与中获得，行业内的溢出相对并不显著，两类溢出由于机理不同，影响条件有一定差异，对于地区行业间溢出，吸收空间是最大的影响因素。另外，吸收能力、内外资合作程度和适度竞争都是溢出发生的重要条件。     

Is Public Capital Productive in China? Evidence from a Panel of Chinese Provinces

In addition to the direct productivity effect, public capital also has an indirect effect on private capital stock and labor input. This paper offers an evaluation of both the direct and indirect effects of Chinese public capital by applying a trans-log aggregate production function including public capital stock to a panel of regional data from 1986–2009. Moreover, we calculate the impact of public capital on regional total factor productivity (TFP) performance by introducing a system GMM estimation. The results show that the output elasticity of Chinese public capital stock is significantly positive, but decreasing year on year, and public capital is found to be a substitute for labor but complementary to private capital input. Finally, public capital has a significant positive effect on regional TFP performance.     

MNEs and wages: The role of productivity spillovers and imperfect labor markets

Disentangling the labor market implications of increased foreign capital flows remains important. This paper provides a unifying framework allowing to study the wage implications of multinational enterprise (MNE) activities, pointing to the importance of controlling for both labor market imperfections and productivity spillovers from foreign to local firms. Results show that increased MNE activities increase average wages in the local economy while contributing to a larger wage dispersion between the MNE and local firms. While the results pertaining to average wages depends heavily on the frictions in the labor market, how much the wage dispersion alters also depends on the extent of productivity spillovers from the MNEs to the local firms and the complementarity between domestic and foreign capital.     

Sources of productivity growth: an empirical analysis with German sectoral data

Many theoretical analyses of the sources of economic growth focus on knowledge spillovers and scale economies to explain growth endogenously. The contribution of this paper is to shed some light on these arguments by an empirical investigation based on a production function framework. Sectoral production functions are estimated with annual German data of 51 sectors from 1960–90. The estimates reveal that both a pure Solow growth model and a Solow model augmented with human capital cannot account for the observed productivity increases. The model should be extended by allowing for inter-industry spillovers and scale economies at the aggregate level, as well as for scale economies associated with human capital at the sectoral level. The business cycle affects observed productivity changes in the short run and in the long run.     

R&D Policies and Endogenous Growth: A Dynamic General Equilibrium Analysis of the Case for Canada*

This paper utilizes a general equilibrium R&D model of endogenous growth via increasing capital variety to examine the impact of alternative policies on productivity and economic growth. The model is calibrated using data from the Canadian economy. Findings reveal that direct incentives such as subsidies to R&D activities would have the highest productivity impact on the Canadian economy, that an increase in subsidies to the users of R&D capital (output) would have a positive but smaller impact, and trade liberalization would have minimal effects on productivity growth via its impact on international R&D spillovers.     

Public and private capital productivity in Russia: a non-parametric investigation

The productivity of public capital has been very popular research topic for US and other OECD countries, while studies using data from transitional countries are almost non-existent. In this paper, we analyze the productivity of public and private capital in Russia with parametric and non-parametric regression methods utilizing a unique regional level panel data from 2003 to 2007. More specifically, we assess public capital’s spillover effects, i.e., the productivity of public capital on private output, as well as the productivity of different capital ownership types on total output. We find that public capital has a clear positive effect on private output. However, our estimates and test statistics show that parametric methods are not able to grasp vast non-linearities and heterogeneity present among Russian regions, while the non-parametric approach can capture these important features of the data better. Furthermore, we find that multicollinearity is an important methodological problem which should be accounted for in analysis concerning capital data. Our results also suggest that the impact of public capital in Russia is heterogeneous in the sense that for some regions its contribution to private output is insignificant or even negative while it has a considerable positive role for most regions. Concerning the capital elasticities of total output, we find that public capital is less productive than private capital and roughly as productive as joint private-public capital.     

Explaining Japan's Unproductive Two Decades

Using industry‐ and micro‐level data, this paper examines why Japan's productivity growth has been slow for such a long time and how it can be accelerated in the future. Japan's capital–gross domestic product ratio continued to increase after 1991, and this increase in the capital–gross domestic product ratio must have contributed to the decline in the rate of return on capital in Japan by decreasing the marginal productivity of capital. On the other hand, Japan's accumulation of information and communication technology capital and intangible investment was very slow. Compared with large firms, which enjoyed an acceleration in the total factor productivity growth in recent years, Japanese small‐ and medium‐sized enterprises were left behind in information and communication technology capital and intangible investment, and their productivity growth has been very low. Furthermore, as large firms expanded their supply chains globally and relocated their factories abroad, research and development spillovers from large firms to small‐ and medium‐sized enterprises seem to have declined.     

Technology diffusion,spatial effects and productivity growth in the Chinese provinces

This paper investigates spatial spillover effects of productivity in China. We set up a model in which a Chinese province achieves productivity growth by taking advantage of productivity spillovers from the world frontier and from other Chinese provinces. By using fixed effects and GMM panel data methods, we show that productivity growth in an inland province in China can be partly attributed to productivity spillover effects of other provinces. We also show that provincial human capital plays an important role in determining the magnitude of these spillover effects.     

Does productivity in Africa benefit from advanced countries’ R&D?

This study employs dynamic ordinary least squares and panel co-integration to estimate advanced countries’ R&D spillover effects on labour productivity in 28 Sub-Saharan African countries over the period 1992–2011. Results show that African countries that import and receive (technical and non-technical) development aid from advanced countries experience an increase in labour productivity, suggesting that trade and aid are transmitters of foreign R&D. However, the extent to which labour productivity responds to R&D spillovers varies based on the country of origin, where spillovers from the USA have a greater impact compared to those from other advanced countries.     

Does foreign ownership matter?

The paper both compares productivity of Russian firms that have foreign direct investments with productivity of fully domestically owned firms and analyses spillovers from foreign‐owned firms to domestic firms. Foreign firms are found to be more productive than domestic ones, but productivity of the former is negatively affected by slow progress of reforms in the regions where they operate. It is also found that there are positive spillovers from foreign‐owned firms to domestic firms in the same industry, but negative effects on domestic firms that are vertically related to foreign‐owned firms. The stock of human capital in regions where foreign firms operate is one of the factors which help domestic firms to benefit from the entry of foreign firms.     

R&D spillovers and productivity: Evidence from U.S. manufacturing microdata

This paper deals with the estimation of the impact of technology spillovers on productivity at the firm level. Panel data for American manufacturing firms on sales, physical capital inputs, employment and R&D investments are linked to R&D data by industry. The latter data are used to construct four different sets of `indirect' R&D stocks, representing technology obtained through spillovers. The differences between two distinct kinds of spillovers are stressed. Cointegration analysis is introduced into production function estimation. Spillovers are found to have significant positive effects on productivity, although their magnitudes differ between high-tech, medium-tech and low-tech firms. First version received: April 1997/final version received: April 1999     

公共资本性支出、经常性支出与内生经济增长

本文基于一个含有两类不同产出能力的公共商品的内生增长模型,通过数理分析得出在市场经济条件下最优公共支出结构的依据是公共商品各自的产出弹性.进而采用面板数据模型对13个发达国家1972～2009年的公共支出实践进行了实证研究.实证结果表明,经常性(资本性)支出对经济增长有正(负)效应.该研究结论为平衡预算下的公共支出结构决策提供了参考依据.     

外资溢出对中国私营企业生产率的异质性影响-来自普查数据的证据

本文利用第一次全国经济普查的企业微观数据研究中国私营企业生产率的异质性对吸收外资溢出的影响。我们发现:(1)企业层面外资份额及其控股与否对企业生产率的积极影响随生产率水平递增;(2)私营企业存在着吸收外资水平溢出和后向溢出的生产率"门槛"效应,即吸收能力的差别;(3)下游外资控股企业的溢出促进了上游大部分私营企业的生产率,而非外资控股的合资企业则对上游生产率较低的私营企业有负的净效应。私营企业面临的外资竞争格局正从各方面形成,而私营部门内部生产能力分化也日渐明显。     

International R&D Spillovers: Trade,FDI, and Information Technology as Spillover Channels*

With the rapid pace of economic integration, the productivity of a country depends not only on domestic R&D, but also on foreign R&D through technology diffusion across countries. The advancement of information technology (IT) has made the international transmission of knowledge faster and more efficient, providing an important channel for international R&D spillovers. This paper investigates three channels of international R&D spillovers: trade, FDI, and information technology. Applying panel cointegration and dynamic OLS analysis to the data for 21 OECD countries plus Israel during the period from 1981 to 1998, we find that bilateral trade remains an important conduit for international R&D spillovers. Although bilateral FDI is found to be positively related to international R&D spillovers, their impact on productivity growth is relatively small. We also find that the development of information technology has played a more important role in international R&D spillovers and productivity growth in recent years.     

Firms’ productivity growth and R&D spillovers: An analysis of alternative technological proximity measures

This paper aim at assessing the impact of R&D spillovers on firms’ economic performance as measured by productivity growth. The construction of R&D spillovers is based on Jaffe's methodology (1988, 1996) which associates econometrics and data analysis. The main objective of the paper is to extend Jaffe's methodology by examining alternative methods for measuring R&D spillovers and to test their impacts in terms of the robustness of results. In particular, the method used to classify firms into technological clusters as well as the metrics implemented to appreciate firms’ technological proximities which enter the construction of spillovers are further investigated. In addition to R&D spillovers, firms’ own R&D capital, labour and physical capital are estimated by means of a Cobb–Douglas production function. The data set consists of a representative sample of 625 worldwide R&D intensive firms over the period 1987–1994.