Monotone Instrumental Variables: With an Application to the Returns to Schooling

Charles Manski () and John V. Pepper ()

Virginia Economics Online Papers from University of Virginia, Department of Economics

Abstract: Econometric analyses of treatment response commonly use instrumental variable (IV) assumptions to identify treatment effects. Yet the credibility of IV assumptions is often a matter of considerable disagreement. There is therefore good reason to consider weaker but more credible assumptions. To this end, we introduce monotone instrumental variable (MIV) assumptions and the important special case of monotone treatment selection (MTS). We study the identifying power of MIV assumptions alone and combined with the assumption of monotone treatment response (MTR). We present an empirical application using the MTS and MTR assumptions to place upper bounds on the returns to schooling.

JEL-codes: C14 C30 J31 (search for similar items in EconPapers)
Date: 1998-01
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Related works:
Working Paper: Monotone Instrumental Variables with an Application to the Returns to Schooling (1998)
Journal Article: Monotone Instrumental Variables, with an Application to the Returns to Schooling (2000)
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Persistent link: http://EconPapers.repec.org/RePEc:vir:virpap:308

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