研发创新抑制波动机制分析*--基于企业生产供给波动视角

摘要

Based on input varieties expanding technological progress framework,this paper built the theoretical model to analyze its mechanism of R&D innovation on firm-level production volatility and test-ed the hypothesis by using chinese manufacturing enterprise dataset.The results showed that a large num-ber of input varieties induced by R&D Innovation would reduce firm-level volatility on some degree.Firms with greater R&D intensity and higher productivity were less volatile.Furthermore,R&D investment would reduce firm-level fluctuation indirectly by expanding input varieties and improving productivity.New product development would reduce firm-level volatility both in indirect and direct channel.This paper veri-fied that another effect existed besides “creative destruction”in R&D innovation on firm-level volatility, and some policy suggestions about how to improve supply capacity and stabilize economic were provided.%[提要]本文基于种类扩展型技术进步框架构建了理论模型，分析研发创新对企业层面生产供给波动的影响效应以及其作用机理，并利用中国制造业企业数据对理论模型进行验证。本文发现，研发创新带来的更多技术种类能够在一定程度上抵御生产波动的风险，企业研发创新强度越大、全要素生产率越高，则企业产出波动性和生产率波动性越小。进一步研究发现，研发投入是通过扩展技术种类范围、提升全要素生产率间接地抑制波动，而研发产出会对企业层面波动产生直接和间接的抑制作用。因此，本文揭示了“创新性毁灭”之外研发创新影响企业层面波动的另一种机制，为改善供给状况、平抑实体经济波动提供了政策启示。