摘要
基于我国工业企业数据,使用门槛面板数据模型,研究了研发投入强度对企业绩效的非线性影响:研发投入强度只有达到第一门槛值时,才能对企业绩效产生显著促进作用;而超过第二门槛值时,对企业绩效的作用变得不明显;研发投入强度对企业绩效影响的门槛效应存在行业差异。最佳的研发投入强度区间是:对于高技术行业而言,研发强度处于1.1%~4.13%时,研发对资产收益率的促进作用最明显;研发强度处于1.17%~4.16%时,研发对全要素生产率的促进作用最明显;而对于低技术行业,研发强度在0.74%~3.73%时,研发对资产收益率的促进作用最强;而在0.93%~3.8%时,对全要素生产率的促进作用最强。我国有研发活动的企业中,超过51.46%的企业,研发投入强度仍低于第一门槛值。因此,引导企业研发创新,提高研发投入强度仍将是我国科技政策的重要目标。
Based on threshold panel data model with industrial enterprises in China, this paper analyzed the non - linear effects of R&D intensity on firm performance. R&D promotes firm performance only if R&D intensity exceeds the first threshold. While R&D in- tensity exceeds the second threshold, increasing R&D can hardly bring performance growth. The threshold effects of R&D intensity on firm performance vary across industries. The optimum interval of R&D intensity ranges from 1. 1% to 4. 13% to effectively promote TFP, and 1.17% -4.16% to promote ROA in high -tech industries. This optimum interval for low -tech industries ranges from 0. 74% to 3.73% to effectively promote TFP, and O. 93% - 3.8% to promote ROA. R&D intensity for 51.46% enterprises involved in R&D activity is still smaller than the first threshold. Therefore, encouraging R&D investment and promoting R&D intensity should still be an important goal for S&T policy in China.
出处
《科学学研究》
CSSCI
北大核心
2013年第11期1708-1716,1735,共10页
Studies in Science of Science
基金
教育部人文社会科学基金项目(11YJA790016)
国家自然科学基金重点项目(71033002)
国家自然科学基金资助项目(71172136)