中文摘要：

全面认识社会资本的促进和阻碍作用至关重要。本文采用PLS多层建构模型,关注企业家社会资本对创新绩效的正、负影响。研究发现：第一,社会资本是一把＂双刃剑＂,既有社会支持,也存在社会成本;第二,社会支持和社会成本分别中介了社会资本对创新绩效的正面和负面影响;第三,发展网络成员间的相互信任关系,既有利于强化社会支持,也有利于降低社会成本;第四,社会资本引致的资金支持和资源支持对创新绩效的贡献作用较大。

英文摘要：

It is significant to fully understand the effects of boost and hindrance caused by social capitals.By using PLS for assessing hierarchical construct models,it is shown that firstly,social capital has the duplicity effect,namely,both negative and positive influences coexist.Secondly,social support and social cost mediate the positive and negative effects of social capital on enterprise innovation performance,respectively.Thirdly,it is highly recommended for entrepreneurs to increase the trust level among network members,which is helpful for enhancing social support and for decreasing social cost.Finally,the financial and resource supports due to social capital contribute more to innovation performance than other supports do.