The Role of Pretest and Proxy-Pretest Measures of the Outcome for Removing Selection Bias in Observational Studies

Autor/inn/en	Hallberg, Kelly; Steiner, Peter M.; Cook, Thomas D.
Institution	Society for Research on Educational Effectiveness (SREE)
Titel	The Role of Pretest and Proxy-Pretest Measures of the Outcome for Removing Selection Bias in Observational Studies
Quelle	(2011), (9 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Monographie
Schlagwörter	Educational Research; Research Methodology; Observation; Pretests Posttests; Role; Statistical Analysis; Selection; Bias; Case Studies + Suchen Sie Ihr Suchwort? Bildungsforschung; Pädagogische Forschung; Research method; Forschungsmethode; Beobachtung; Rollen; Statistische Analyse; Auslese; Case study; Fallstudie; Case Study
Abstract	The purpose of this paper is threefold. The first is to test whether the pretest plays a greater role in bias reduction than any other single covariate, which the authors predict it will. The second is to examine the marginal improvement in bias reduction offered by having two pretest measurement waves. The authors predict that there will be some marginal gain in bias reduction as a result of including an additional pretest wave. The third purpose is to examine the extent to which a proxy pretest measure can substitute for a real pretest whose form is invariant between pretest and posttest. (Contains 3 tables.) (ERIC).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10