Higher productivity in importing German manufacturing firms: self-selection, learning from importing, or both?
Higher productivity in importing German manufacturing firms: self-selection, learning from importing, or both?
复制标题
进口德国制造企业的生产率更高：自我选择、向进口学习，还是两者兼而有之？
DOI：
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Joachim Wagner
中科院分区：
文献类型：
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作者：
Alexander Vogel;Joachim Wagner
本文使用了 2001 年至 2005 年新近提供的制造企业综合面板数据集，记录了世界商品市场领先者德国进口与生产率之间关系的第一个实证结果。此外，首次通过测试生产率更高的企业自我选择进口以及进口的生产率提高效应（“进口学习”）来系统地研究这种关系中的因果关系方向。我们发现进口和生产力之间存在正相关关系。从控制企业规模、行业和不可观察的企业异质性的固定企业效应的实证模型中，我们发现西德和东德的国际贸易溢价大致相同。与完全不进行贸易的公司相比，双向贸易商的溢价确实最高，其次是仅出口的公司，而仅进口的公司的估计溢价最小。我们发现了生产率对进口产生积极影响的证据，指出生产率较高的企业自我选择进入进口，但没有明确的证据表明进口由于进口学习而对生产率产生影响。
This paper uses a newly available comprehensive panel data set for manufacturing enterprises from 2001 to 2005 to document the first empirical results on the relationship between imports and productivity for Germany, a leading actor on the world market for goods. Furthermore, for the first time the direction of causality in this relationship is investigated systematically by testing for self-selection of more productive firms into importing, and for productivity-enhancing effects of imports (‘learning-by-importing’). We find a positive link between importing and productivity. From an empirical model with fixed enterprise effects that controls for firm size, industry, and unobservable firm heterogeneity we see that the premia for trading internationally are about the same in West and East Germany. Compared to firms that do not trade at all two-way traders do have the highest premia, followed by firms that only export, while firms that only import have the smallest estimated premia. We find evidence for a positive impact of productivity on importing, pointing to self-selection of more productive enterprises into imports, but no clear evidence for the effect of importing on productivity due to learning-by-importing.
DOI：
10.2139/ssrn.1015617
发表时间：
2006-09
期刊：
McDonough: Strategy [including Economics
影响因子：
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作者：
A. Bernard;J. Jensen;S. Redding;Peter K. Schott
通讯作者：
A. Bernard;J. Jensen;S. Redding;Peter K. Schott