本文基于社会关系网络视角从网络中心度、网络强度和网络专业性三个层面考察连锁董事网络对企业技术创新绩效、研发投入的直接影响以及研发投入的中介效应。采用中国2011-2015年期间沪深两市制造业上市公司数据为样本,研究发现连锁董事网络中心度、弱连锁程度以及网络专业性对企业技术创新绩效有显著促进作用,研发投入在连锁董事网络与企业技术创新绩效两者之间存在中介效应。因此连锁董事网络能提升企业技术创新绩效的作用机制可以部分解释为：连锁董事网络可以通过资源和信息在网络中的传递提高企业的研发投入比重,而研发投入的增加可以直接提高企业的技术创新绩效。

Based on the perspective of social relations network, the article examines the direct effect of Interlocking directorates on firm technological innovation performance, R D investment and the mediating effect of R D investment from three aspects of network centrality, network intensity and network specialization. Based on a database covering all the listed manufacturing corporations from 2011 to 2015, the empirical results show that network centrality, network intensity and network specialization have a significant effect on the technological innovation performance and the R D investment has a mediating effect between them.The influence mechanism can be partly explained as below: Interlocking directorate network can increase the proportion of R D investment through the transmission of resources and information in the network, and the increase of R D investment can directly improve the technological innovation performance of the enterprise.

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