Multi-Product Exporters: Verifying Stylized Facts
提出一个统计模型作为零假设基准，用于检验多产品出口商的典型事实哪些是虚假的、哪些是有信息量的，帮助判断核心能力、生产率驱动范围与规模等理论的有效性。
Abstract In this paper, we propose a statistical model to characterize the null hypothesis of the random product size distribution for multi-product exporters. It serves as a benchmark to test the empirical facts and model predictions. We ask which stylized facts that characterize multi-product exporters and motivate such theories as core competencies, productivity being a driver of both scope and scale, and economies of scope among others, are spurious, and which are informative. The benchmark model also provides alternative moments to test the validity of these theories.