Violating the Monotonicity condition for instrumental variable—Dimorphic patterns of gene–behavior association

Muriel Zheng Fang

Economics Letters, 2014, vol. 122, issue 1, 59-63

Abstract: I document the dimorphic patterns for the association between DAT1 9R9R genotype and measures of risky behaviors including drinking, use of marijuana, cocaine, other drugs, and number of sexual partners. The associations between DAT1 9R9R genotype and risky behaviors are often in opposite signs for females and males, in the National Longitudinal Survey of Adolescent Health (Add Health). This article sensitizes the researcher on the sexual dimorphic pattern of gene–behavior association, and its risk to violate the Monotonicity (no-defiers) condition in applications that use genetic markers as instrumental variables.

Keywords: Monotonicity; Genetic instrumental variable; Dimorphic pattern (search for similar items in EconPapers)
JEL-codes: I1 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0165176513004850
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:ecolet:v:122:y:2014:i:1:p:59-63

DOI: 10.1016/j.econlet.2013.10.038

Access Statistics for this article

Economics Letters is currently edited by Economics Letters Editorial Office

More articles in Economics Letters from Elsevier
Bibliographic data for series maintained by Catherine Liu ().