Accounting for Student Attrition in Power Calculations: Benchmarks and Guidance

Autor/inn/en	Rickles, Jordan; Zeiser, Kristina; West, Benjamin
Titel	Accounting for Student Attrition in Power Calculations: Benchmarks and Guidance
Quelle	In: Journal of Research on Educational Effectiveness, 11 (2018) 4, S.622-644 (20 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	Weitere Informationen
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1934-5747
DOI	10.1080/19345747.2018.1502384
Schlagwörter	Student Attrition; Benchmarking; Sample Size; Effect Size; Equations (Mathematics); Student Mobility; Research Methodology + Suchen Sie Ihr Suchwort? Schülerbeurlaubung; Equations; Mathematics; Gleichungslehre; Student; Students; Mobility; Schüler; Schülerin; Studentin; Mobilität; Research method; Forschungsmethode
Abstract	Although the research methodology literature includes empirical benchmarks for effect sizes and intraclass correlations to help researchers determine adequate sample sizes through power analysis, it does not include similar benchmarks that would assist proper planning for attrition. To help fill this void, this paper describes how researchers can incorporate student attrition in power analyses and provides empirical benchmarks for the amount of attrition one might expect when conducting a school-based study that follows students over multiple years. The paper incorporates parameters for student attrition in common minimum detectable effect size calculations, presents attrition benchmarks based on student mobility rates in nationally representative longitudinal surveys, and presents benchmarks based on a synthesis of published evaluation studies. The paper includes a demonstration of how researchers can use the attrition benchmarks to take student attrition into account in a power analysis. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01