Selection and Market Reallocation: Productivity Gains from Multinational Production
研究跨国生产带来的生产率收益中，选择与市场重新配置机制（竞争导致资源在国内外企业间重新配置、低效企业退出）的作用远大于企业内生产率提升，忽略该机制会严重误解收益来源。
Assessing productivity gains from multinational production has been a vital topic of economic research and policy debate. Positive productivity gains are often attributed to productivity spillovers; however, an alternative, much less emphasized channel is selection and market reallocation, whereby competition leads to factor and revenue reallocation within and between domestic firms and exits of the least productive firms. We investigate the roles of these different mechanisms in determining aggregate-productivity gains using a unifying framework that explores the mechanisms' distinct predictions on the distributions of domestic firms: within-firm productivity improvement shifts rightward or reshapes the productivity distribution, while selection and market reallocation move the revenue and employment distributions leftward and raise left truncations. Using a rich cross-country firm-level panel dataset, we find significant evidence of both mechanisms and effects of competition in product, technology, and labor space. However, selection and market reallocation account for the majority of aggregate-productivity gains, suggesting ignoring this channel could lead to substantial bias in understanding the nature of productivity gains from multinational production.