Identification of a Triangular Two Equation System Without Instruments
Identification of a Triangular Two Equation System Without Instruments
复制标题
三角二方程组的无仪器辨识
DOI:
10.1080/07350015.2023.2166052
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发表时间:
2023
影响因子:
3
通讯作者:
Zhang, Linqi
中科院分区:
文献类型:
--
作者:
Lewbel, Arthur;Schennach, Susanne M.;Zhang, Linqi
We show that a standard linear triangular two equation system can be point identified, without the use of instruments or any other side information. We find that the only case where the model is not point identified is when a latent variable that causes endogeneity is normally distributed. In this nonidentified case, we derive the sharp identified set. We apply our results to Acemoglu and Johnson’s model of life expectancy and GDP, obtaining point identification and comparable estimates to theirs, without using their (or any other) instrument.
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