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https://hdl.handle.net/10419/58484
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Belzil, Christian | en |
dc.contributor.author | Hansen, Jörgen | en |
dc.date.accessioned | 2012-05-08 | - |
dc.date.accessioned | 2012-06-15T07:38:04Z | - |
dc.date.available | 2012-06-15T07:38:04Z | - |
dc.date.issued | 2012 | - |
dc.identifier.pi | urn:nbn:de:101:1-201205026057 | en |
dc.identifier.uri | http://hdl.handle.net/10419/58484 | - |
dc.description.abstract | We build on Rosenzweig and Wolpin (2000) and Keane (2010) and show that in order to fulfill the Instrumental variable (IV) identifying moment condition, a policy must be designed so that compliers and non-compliers either have the same average error term, or have an error term ratio equal to their relative share of the population. The former condition (labeled Choice Orthogonality) is essentially a no-selection condition. The latter one, referred to as Weighted Opposite Choices, may be viewed as a distributional (functional form) assumption necessary to match the degree of selectivity between compliers and noncompliers to their relative population proportions. Those conditions form a core of implicit IV assumptions that are present in any empirical applications. They allow the econometrician to gain substantial insight about the validity of a specific instrument, and they illustrate the link between identification and the statistical strength of an instrument. Finally, our characterization may also help designing a policy generating a valid instrument. | en |
dc.language.iso | eng | en |
dc.publisher | |aInstitute for the Study of Labor (IZA) |cBonn | en |
dc.relation.ispartofseries | |aIZA Discussion Papers |x6339 | en |
dc.subject.jel | B4 | en |
dc.subject.jel | C1 | en |
dc.subject.jel | C3 | en |
dc.subject.ddc | 330 | en |
dc.subject.keyword | instrumental variable methods | en |
dc.subject.keyword | implicit assumptions | en |
dc.subject.keyword | treatment effects | en |
dc.subject.stw | Instrumentalvariablen-Schätzmethode | en |
dc.subject.stw | Stichprobenverfahren | en |
dc.subject.stw | Theorie | en |
dc.title | Characterizing the instrumental variable identifying assumption as sample selection conditions | - |
dc.type | Working Paper | en |
dc.identifier.ppn | 71537642X | en |
dc.rights | http://www.econstor.eu/dspace/Nutzungsbedingungen | en |
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