Universität zu Köln

Joyce, Ted, Remler, Dahlia K., Jaeger, David A., Altindag, Onur, O'Connell, Stephen D. and Crockett, Sean (2017). ON MEASURING AND REDUCING SELECTION BIAS WITH A QUASI-DOUBLY RANDOMIZED PREFERENCE TRIAL. J. Policy Anal. Manage., 36 (2). S. 438 - 465. HOBOKEN: WILEY. ISSN 1520-6688

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Abstract

Randomized experiments provide unbiased estimates of treatment effects, but are costly and time consuming. We demonstrate how a randomized experiment can be leveraged to measure selection bias by conducting a subsequent observational study that is identical in every way except that subjects choose their treatment-a quasi-doubly randomized preference trial (quasi-DRPT). Researchers first strive to think of and measure all possible confounders and then determine how well these confounders as controls can reduce or eliminate selection bias. We use a quasi-DRPT to study the effect of class time on student performance in an undergraduate introductory microeconomics course at a large public university, illustrating its required design elements: experimental and choice arms conducted in the same setting with identical interventions and measurements, and all confounders measured prospectively to treatment assignment or choice. Quasi-DRPTs augment randomized experiments in real-world settings where participants choose their treatments. (C) 2017 by the Association for Public Policy Analysis and Management.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Joyce, Ted UNSPECIFIED UNSPECIFIED UNSPECIFIED Remler, Dahlia K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jaeger, David A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Altindag, Onur UNSPECIFIED UNSPECIFIED UNSPECIFIED O'Connell, Stephen D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Crockett, Sean UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-238586
DOI:	10.1002/pam.21976
Journal or Publication Title:	J. Policy Anal. Manage.
Volume:	36
Number:	2
Page Range:	S. 438 - 465
Date:	2017
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1520-6688
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EXPERIMENT COMPARING RANDOM; YIELD ACCURATE ANSWERS; INTERVENTION TRIALS; TRAINING-PROGRAMS Multiple languages Economics; Public Administration Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23858