Private returns to R&D in the presence of spillovers, revisited
复制并扩展了Eberhardt等人(2013)关于研发溢出效应的研究，使用开源R代码验证了主要结论，指出了标准误计算中的不一致性，并展示了利用局部截面依赖诊断评估溢出方向的方法。
Summary This is both a replication of Eberhardt et al. ( Review of Economics and Statistics , 2013, 95 (2), 436–448) using different software, and a critical extension and diagnostic reassessment of the original results. The main findings of the paper are confirmed and sometimes reinforced. We point out some inconsistencies, in particular in the calculation of standard errors for the common correlated effects pooled model; we extend the diagnostic checks; lastly, in the spirit of the original contribution, we show how local cross‐sectional dependence diagnostics can be used to provide a first assessment of the direction of spillovers. We provide complete replication code in open source R.