Instrumental variables with unordered treatments: Theory and evidence from returns to fields of study

• Published in: arXiv.org
• Main Authors: Heinesen, Eskil, Hvid, Christian, Kirkebøen, Lars, Leuven, Edwin, Mogstad, Magne
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 11.10.2022
• Subjects: Algorithms; Bias; Heterogeneity

We revisit the identification argument of Kirkeboen et al. (2016) who showed how one may combine instruments for multiple unordered treatments with information about individuals' ranking of these treatments to achieve identification while allowing for both observed and unobserved heterogeneity...