Estimating Difference-Score Reliability in Pretest-Posttest Settings

Autor/inn/en	Gu, Zhengguo; Emons, Wilco H. M.; Sijtsma, Klaas
Titel	Estimating Difference-Score Reliability in Pretest-Posttest Settings
Quelle	In: Journal of Educational and Behavioral Statistics, 46 (2021) 5, S.592-610 (19 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Gu, Zhengguo) ORCID (Emons, Wilco H. M.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1076-9986
DOI	10.3102/1076998620986948
Schlagwörter	Test Reliability; Scores; Pretests Posttests; Computation; Test Bias; Test Items; Simulation; Design; Correlation + Suchen Sie Ihr Suchwort? Testreliabilität; Testkritik; Test content; Testaufgabe; Simulation program; Simulationsprogramm; Korrelation
Abstract	Clinical, medical, and health psychologists use difference scores obtained from pretest--posttest designs employing the same test to assess intraindividual change possibly caused by an intervention addressing, for example, anxiety, depression, eating disorder, or addiction. Reliability of difference scores is important for interpreting observed change. This article compares the well-documented traditional method and the unfamiliar, rarely used item-level method for estimating difference-score reliability. We simulated data under various conditions that are typical of change assessment in pretest--posttest designs. The item-level method had smaller bias and greater precision than the traditional method and may be recommended for practical use. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01