Expressways as a Catalyst for Firm Innovation

This replication dataset contains all data and program codes required to reproduce the full findings of this study, which examines the incentive effects of expressway infrastructure on corporate innovation. The dataset covers firm–county panel data (2003–2014), PSM data, and placebo test data.本复现数据集包含复现本研究全部结论所需的全部数据与程序代码。本研究旨在检验高速公路基础设施对企业创新的激励效应，该数据集涵盖2003-2014年企业-县域面板数据、倾向得分匹配（Propensity Score Matching，PSM）数据以及安慰剂检验数据。