Instrumental Variables

Synonyms: 
Experimental Instrumental variables

This option is used to estimate the causal effect of variables on an intervention.

The Instrumental Variables option (IV) is described by Duncan Chapman on the Urban Institute’s website as “one of the more compelling quasi-experimental options of estimating impacts, largely because the assumptions needed to justify the IV option are often more plausible than those needed to justify other options, such as regression”

This option involves identifying instrumental variables; variables that impact on outcomes by affecting a key independent variable. The option can also be used to control for measurement errors.

Example

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Advice

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Resources

Guide

Examples

Source

Chaplin, D. (2012). Instrumental variables options. Retrieved from http://www.urban.org/toolkit/data-methods/instrumental.cfm

Updated: 5th November 2014 - 3:35pm
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International Initiative for Impact Evaluation.
Arlington.
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