Bias and consistency in three-way gravity models
Bias and consistency in three-way gravity models
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三向重力模型的偏差和一致性
DOI:
10.1016/j.jinteco.2021.103513
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发表时间:
2021
影响因子:
3.3
通讯作者:
Weidner M
中科院分区:
文献类型:
--
作者:
Weidner M
We study the incidental parameter problem for the “three-way” Poisson Pseudo-Maximum Likelihood (“PPML”) estimator recently recommended for identifying the effects of trade policies and in other panel data gravity settings. Despite the number and variety of fixed effects involved, we confirm PPML is consistent for fixedTand we show it is in fact the only estimator among a wide range of PML gravity estimators that is generally consistent in this context whenTis fixed. At the same time, asymptotic confidence intervals in fixed-Tpanels are not correctly centered at the true parameter values, and cluster-robust variance estimates used to construct standard errors are generally biased as well. We characterize each of these biases analytically and show both numerically and empirically that they are salient even for real-data settings with a large number of countries. We also offer practical remedies that can be used to obtain more reliable inferences of the effects of trade policies and other time-varying gravity variables, which we make available via an accompanying Stata package called ppml_fe_bias.
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DOI:
10.1017/cbo9780511607547.013
发表时间:
2005-10
期刊:
Yale: Cowles Foundation Working Papers
影响因子:
--
作者:
M. Arellano;J. Hahn
通讯作者:
M. Arellano;J. Hahn
DOI:
10.21799/frbp.wp.2019.29
发表时间:
2019
期刊:
Urban Economics & Regional Studies eJournal
影响因子:
--
作者:
Jeffrey C. Brinkman;Jeffrey Lin
通讯作者:
Jeffrey Lin
影响因子:
1
作者:
A. Rose
通讯作者:
A. Rose
DOI:
10.30875/abc0167e-en
发表时间:
2016-11
期刊:
--
影响因子:
--
作者:
Y. Yotov;R. Piermartini;José-Antonio Monteiro;Mario Larch
通讯作者:
Y. Yotov;R. Piermartini;José-Antonio Monteiro;Mario Larch
影响因子:
8
作者:
Koen Jochmans
通讯作者:
Koen Jochmans