Weak and Strong Cross‐Sectional Dependence: A Panel Data Analysis of International Technology Diffusion
弱与强截面相关:国际技术扩散的面板数据分析
Summary This paper provides an econometric examination of technological knowledge spillovers among countries by focusing on the issue of error cross‐sectional dependence, particularly on the different ways—weak and strong—that this dependence may affect model specification and estimation. A preliminary analysis based on estimation of the exponent of cross‐sectional dependence provides a clear result in favor of strong cross‐sectional dependence. This result has relevant…