WHAT HAVE WE LEARNED FROM THREE DECADES OF RESEARCH ON THE PRODUCTIVITY OF PUBLIC CAPITAL?
WHAT HAVE WE LEARNED FROM THREE DECADES OF RESEARCH ON THE PRODUCTIVITY OF PUBLIC CAPITAL?
复制标题
DOI：
10.1111/joes.12037
复制
发表时间：
2014-12-01
影响因子：
5.3
通讯作者：
Ligthart, Jenny E.
中科院分区：
文献类型：
--
作者：
Bom, Pedro R. D.;Ligthart, Jenny E.
在过去的三十年里，人们对公共资本的私人产出弹性进行了大量的研究。然而，由于现有的估计数范围很广，迄今未能达成任何共识。本文通过定量分析从1983-2008年期间的68项研究中收集的578个估计值的样本来调和文献的实证结果。使用荟萃回归分析，我们展示了研究设计特征和发表偏倚如何解释估计值之间的大部分变异。我们发现，在中央政府层面上提供的公共资本的短期产出弹性为0.083，长期增加到0.122。此外，如果只考虑区域/地方政府一级的核心基础设施，这些估计数几乎翻了一番。公共资本的平均产出弹性为0.106。我们的研究结果表明，公共资本在经合组织经济体中供应不足。
The last three decades have witnessed a great deal of research effort devoted to measuring the private output elasticity of public capital. The wide range of available estimates have precluded any consensus so far, however. This paper reconciles the empirical findings of the literature by quantitatively analyzing a sample of 578 estimates collected from 68 studies for the 1983-2008 period. Using meta-regression analysis, we show how study design characteristics and publication bias can explain a large fraction of the variation across estimates. We find a short-run output elasticity of public capital supplied at the central government level of 0.083, which increases to 0.122 in the long run. If, in addition, only core infrastructure at a regional/local level of government is considered, these estimates are almost doubled. The average output elasticity of public capital amounts to 0.106. Our results suggest that public capital is undersupplied in OECD economies.