Arbeitspapier

Identification with imperfect instruments

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.

Language
Englisch

Bibliographic citation
Series: cemmap working paper ; No. CWP16/08

Classification
Wirtschaft
Subject
Ökonometrie
Korrelation
Fehlerkorrekturmodell

Event
Geistige Schöpfung
(who)
Nevo, Aviv
Rosen, Adam
Event
Veröffentlichung
(who)
Centre for Microdata Methods and Practice (cemmap)
(where)
London
(when)
2008

DOI
doi:10.1920/wp.cem.2008.1608
Handle
Last update
10.03.2025, 11:43 AM CET

Data provider

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Object type

  • Arbeitspapier

Associated

  • Nevo, Aviv
  • Rosen, Adam
  • Centre for Microdata Methods and Practice (cemmap)

Time of origin

  • 2008

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