Comparing IV With Structural Models: What Simple IV Can and Cannot Identify.
Comparing IV With Structural Models: What Simple IV Can and Cannot Identify.
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DOI:
10.1016/j.jeconom.2009.09.006
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发表时间:
2010-05-01
影响因子:
6.3
通讯作者:
Urzúa S
中科院分区:
文献类型:
--
作者:
Heckman JJ;Urzúa S
This paper compares the economic questions addressed by instrumental variables estimators with those addressed by structural approaches. We discuss Marschak’s Maxim: estimators should be selected on the basis of their ability to answer well-posed economic problems with minimal assumptions. A key identifying assumption that allows structural methods to be more informative than IV can be tested with data and does not have to be imposed.
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