The Input-Output Approach to Instrument Selection
提出一种利用投入产出表信息为细分行业选择需求冲击工具变量的新方法，并在美国制造业中找到了200多个行业的可行工具，最后以水泥行业为例估计短期供给曲线。
Abstract This article proposes a new method of selecting demand-shift instruments for disaggregated industries. I use prior information from input-output tables to identify industries whose output fluctuations are likely to function as approximately exogenous demand shocks for other industries. After motivating this idea theoretically, I implement the input-output approach using data from the 1977 detailed input-output study. I conduct a systematic instrument search for over 450 U.S. manufacturing industries and find over 200 industries possessing plausible instruments. I conclude with a brief application, showing how input-output instruments can be used to estimate the short-run supply curve of the cement industry. KEY WORDS: Demand shiftExogeneityIdentificationInstrumental variablesSupply curveSupply shock