Abstract

A key aspect of the article by Lousdal on instrumental variables was a discussion of the monotonicity assumption. However, there was no mention of the history of the development of this assumption. The purpose of this letter is to note that Baker and Lindeman and Imbens and Angrist independently introduced the monotonicity assumption into the analysis of instrumental variables. The letter also places the monotonicity assumption in the context of the method of latent class instrumental variables.

Details

Title
Latent class instrumental variables and the monotonicity assumption
Author
Baker, Stuart G
Pages
1-2
Section
Letter to the Editor
Publication year
2020
Publication date
2020
Publisher
BioMed Central
e-ISSN
17427622
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2383437032
Copyright
© 2020. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.