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http://hdl.handle.net/10419/38673
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| Title: | | Identification with imperfect instruments  |
| Authors: | | Nevo, Aviv Rosen, Adam M. |
| Issue Date: | | 2008 |
| Series/Report no.: | | CSIO working paper 0097 |
| Abstract: | | Dealing with endogenous regressors is a central challenge of applied research. The standard solution is to use instrumental variables that are assumed to be uncorrelated with unobservables. We instead assume (i) the correlation between the instrument and the error term has the same sign as the correlation between the endogenous regressor and the error term, and (ii) that the instrument is less correlated with the error term than is the endogenous regressor. Using these assumptions, we derive analytic bounds for the parameters. We demonstrate the method in two applications. |
| Document Type: | | Working Paper |
| Appears in Collections: | | CSIO Electronic Working Papers, Northwestern University
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