Interpreting Average Effect Sizes: Never a Center without a Spread

Autor/in	Guskey, Thomas R.
Titel	Interpreting Average Effect Sizes: Never a Center without a Spread
Quelle	In: NASSP Bulletin, 103 (2019) 4, S.273-280 (8 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Guskey, Thomas R.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0192-6365
DOI	10.1177/0192636519889151
Schlagwörter	Effect Size; Educational Innovation; Meta Analysis; Statistical Distributions; Statistical Analysis + Suchen Sie Ihr Suchwort? Instructional innovation; Bildungsinnovation; Meta-analysis; Metaanalyse; Wahrscheinlichkeitsverteilung; Statistische Analyse
Abstract	School leaders today are making important decisions regarding education innovations based on published average effect sizes, even though few understand exactly how effect sizes are calculated or what they mean. This article explains how average effect sizes are determined in meta-analyses and the importance of including measures of variability with any average effect size. By considering the variation in effect sizes among studies of the same innovation, education leaders can make better decisions about innovations and greatly increase the likelihood of achieving optimal results from implementation. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01