An Empirical Model of Growth Through Product Innovation
An Empirical Model of Growth Through Product Innovation
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DOI：
10.3982/ecta5997
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发表时间：
2008-11-01
期刊：
影响因子：
6.1
通讯作者：
Mortensen, Dale T.
中科院分区：
文献类型：
--
作者：
Lentz, Rasmus;Mortensen, Dale T.
不同公司之间的生产率差异很大，而且持续存在，但工人重新分配作为总生产率增长的重要来源的证据喜忧参半。本文的目的是估计一个通过创新实现增长的均衡模型的结构，该模型旨在确定和量化资源重新配置在增长过程中的作用。该模型是Klette和Kortom(2004)发展的熊彼特企业演化和增长理论的一个版本，扩展了对企业异质性的考虑。数据集是一个由丹麦公司组成的小组，其中包括附加值、就业和工资信息。这个模特的合身程度很好。估计的模型表明，每个队列中生产率较高的公司增长更快，因此在稳定状态下挤出生产率较低的公司。在模型的估计版本中，这种选择效应占总增长的53%。
Productivity differences across firms are large and persistent, but the evidence for worker reallocation as an important source of aggregate productivity growth is mixed. The purpose of this paper is to estimate the structure of an equilibrium model of growth through innovation designed to identify and quantify the role of resource reallocation in the growth process. The model is a version of the Schumpeterian theory of firm evolution and growth developed by Klette and Kortum (2004) extended to allow for firm heterogeneity. The data set is a panel of Danish firms that includes information on value added, employment, and wages. The model's fit is good. The estimated model implies that more productive firms in each cohort grow faster and consequently crowd out less productive firms in steady state. This selection effect accounts for 53% of aggregate growth in the estimated version of the model.