摘要
企业研发投入与绩效之间的关系是创新研究领域的热点问题。本文采用2005年到2007年的中国大中型制造业企业调查数据,分析不同技术特性的产业中,企业生产率对投入R&D活动决策的影响。研究发现在各行业中生产率相对较高的企业选择投入R&D活动,单位全要素生产率的增加将使企业投入R&D决策的概率增加0.6%,即企业研发投入决策存在自我选择的现象。产业的技术属性影响企业的R&D投入决策:在技术机会较多的产业,企业更倾向于投入R&D活动;技术收益独占性与企业R&D投入之间存在着倒U型的关系。企业R&D投入的自我选择机制可以通过扩展的两部门Melitz一般均衡模型进行解释,模型表明在R&D投入产出较高的行业中,企业更倾向于投入R&D活动。研究指出由于企业投资R&D活动存在自选择性,在分析R&D投入对企业绩效的影响时应该将该作用剔除。
In view of the importance of understanding the causality between firms performance and their decision to invest in R＆D activities,this study analyzes the effect of firms productivity on their decision to invest in R＆D using the survey data for Chinese manufacturing firms during 2005 to 2007. The empirical results reveal a self- selection mechanism for Chinese firms to invest in R＆D,that is,more productive firms tend to invest in R＆D. Moreover,technological characteristics of sectors haven significant influences on the decision of R＆D investment. More specifically,more technology opportunities significantly improve the tendency of firms to invest in R＆D,while there is an inverted U- shape between the decision of R＆D investment and appropriability. The mechanism of self- selection into R＆D investment is demonstrated by an expanded Melitz（ 2003） general equilibrium model. These findings imply that the self- selection bias should be corrected when estimating the effect of R＆D investment on the productivity of firms.
出处
《科学学研究》
CSSCI
北大核心
2016年第3期346-356,共11页
Studies in Science of Science
基金
国家自然科学基金项目(71503247)
关键词
R&D投入决策
生产率
自我选择
独占性
技术机会
R＆D investment decision
productivity
self-selection
appropriability
technology opportunities
