On Measuring and Reducing Selection Bias with a Quasi-Doubly Randomized Preference Trial

Autor/inn/en	Joyce, Ted; Remler, Dahlia K.; Jaeger, David A.; Altindag, Onur; O'Connell, Stephen D.; Crockett, Sean
Titel	On Measuring and Reducing Selection Bias with a Quasi-Doubly Randomized Preference Trial
Quelle	In: Journal of Policy Analysis and Management, 36 (2017) 2, S.438-459 (22 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0276-8739
DOI	10.1002/pam.21976
Schlagwörter	Randomized Controlled Trials; Quasiexperimental Design; Selection Criteria; Selection Tools; Test Bias; Research Methodology; Sampling; Undergraduate Students; Time Factors (Learning); Microeconomics; Introductory Courses; Intervention; Control Groups; Experimental Groups; Participant Characteristics; Maximum Likelihood Statistics; Effect Size + Suchen Sie Ihr Suchwort? Selection criterion; Auslesekriterium; Testkritik; Research method; Forschungsmethode; Mikroökonomie; Einführungskurs
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. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01