This paper examines the effects of participating in the KIC on firms’ productivity using firm-level data from 1998 to 2012, focusing on the textile sector. To do this, we implemented PSM estimations employing the radius matching method with 0.01 caliper and 10nearest-neighbor matchings with replacement. We found 100 matched firms in control groups(domestic firms) that corresponded to each of the 10 treated firms.

For analysis, we used a difference-in-differences (DID) framework and extended the basic DID framework to the event study framework of Gathmann et al. (2018). The results reported that the treated firms experienced the increased sales but the improvement in sales had not lead to improvements in productivity. These results can be found in the DID event study as well as the DID analysis. That is, improvement in productivity through FDI cannot be found in the empirical results.

本文使用1998年至2012年的企业级数据，重点研究了纺织行业，研究了参加KIC对企业生产率的影响。为此，我们使用半径匹配方法（具有0.01卡尺）和10个最近邻匹配（带有替换）来实施PSM估计。我们在对照组（国内公司）中找到了100个匹配的公司，它们分别与10个处理过的公司相对应。

为了进行分析，我们使用了差异差异（DID）框架并将基本DID框架扩展到Gathmann等人的事件研究框架。（2018）。结果报告说，经过处理的公司的销售量增加了，但是销售量的改善并没有导致生产率的提高。这些结果可以在DID事件研究以及DID分析中找到。即，在经验结果中找不到通过外国直接投资提高生产率的情况。