International knowledge sourcing: evidence from U.S. firms expanding abroad
研究发现美国企业海外投资不仅是为了追赶竞争对手或获取技术多样性，更是为了利用国外相似的研发活动来降低自身下一代研发的固定成本。
Abstract Recent research demonstrates that firms, motivated by national differences in technical activity, expand abroad to source unique knowledge. Extant research suggests that firms use a knowledge sourcing strategy to ‘catch up’ with competitors and to obtain ‘technical diversity.’ We widen the investigation by suggesting that firms also use knowledge sourcing as a springboard to reduce their next generation R&D costs–that firms would seek out similar R&D activity to combine with their own. Using unique data that encompasses the multitude of countries where U.S. firms invest, we test the importance of these explanations. Measuring knowledge via patent stocks, we find that country‐industries with larger stocks and greater technical similarity to the United States are more attractive. These findings suggest that an important explanation for firms investing abroad is not catching up or technologically diversifying, but is using similar R&D efforts of others to overcome fixed R&D cost hurdles. Copyright © 2008 John Wiley & Sons, Ltd.