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### ICT投资、互联网普及和全要素生产率

• 出版日期:2020-09-25 发布日期:2020-09-18

### ICT Investment, Internet Penetration and Total Factor Productivity

Xie Lijuan　Chen Jinran　Wang Shixun

• Online:2020-09-25 Published:2020-09-18

Abstract: This paper uses the DEA-Malmquist index method to measure the total factor productivity,technical efficiency and technological change of China by sector from 2002 to 2012, and constructs the ICT capital input intensity based on China’s regional input and output tables. On this basis, this paper empirically tests the impact of ICT investment on productivity. This paper finds that the ICT investment has a positive effect on total factor productivity growth, and this effect is largely achieved by ICT investment promoting technical efficiency growth. The panel threshold regression model shows that only when it reaches a certain Internet penetration rate does the positive effect of the ICT investment on technical efficiency begin to appear, and this positive effect is further enhanced when it reaches a high Internet penetration rate. However, with the high internet penetration rate, ICT investment has a dampening effect on technological change, and the positive effect of ICT investment on total factor productivity disappears. Therefore, when we make the ICT investment, we should try to improve the capacity of the industry resource utilization through information management, in order to maximize the contribution of technical efficiency to total factor productivity. What is more, we should fully consider the Internet penetration rate in different industries and regions, in order to stimulate the complementary effects of “connection economy” on the ICT effectiveness deeply. At the same time, attention should also be paid to designing the corresponding industrial policies in order to mitigate the potential obstruction effect of the Internet development on technological change.