The Average Distance between Item Values: A Novel Approach for Estimating Internal Consistency

Autor/inn/en	Sturman, Edward D.; Cribbie, Robert A.; Flett, Gordon L.
Titel	The Average Distance between Item Values: A Novel Approach for Estimating Internal Consistency
Quelle	In: Journal of Psychoeducational Assessment, 27 (2009) 5, S.409-420 (12 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0734-2829
DOI	10.1177/0734282908330937
Schlagwörter	Computation; Reliability; Measures (Individuals); Evaluation Methods; Test Construction; Test Items; Correlation; Scores; Center for Epidemiologic Studies Depression Scale + Suchen Sie Ihr Suchwort? Reliabilität; Messdaten; Testaufbau; Test content; Testaufgabe; Korrelation
Abstract	This article presents a method for assessing the internal consistency of scales that works equally well with short and long scales, namely, the average proportional distance. The method provides information on the average distance between item scores for a particular scale. In this article, we sought to demonstrate how this relatively simple statistic could be calculated and present examples that show its advantage over traditional methods. Simulation and empirical tests were conducted to establish standards for the average proportional distance of scores. The implications for test construction are discussed with a particular emphasis on the advantages of developing shorter scales for psychological and educational research. (Contains 6 tables.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10