Investigating Repeater Effects on Small Sample Equating: Include or Exclude?

Autor/inn/en	Diao, Hongyu; Keller, Lisa
Titel	Investigating Repeater Effects on Small Sample Equating: Include or Exclude?
Quelle	In: Applied Measurement in Education, 33 (2020) 1, S.54-66 (13 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0895-7347
DOI	10.1080/08957347.2019.1674302
Schlagwörter	Licensing Examinations (Professions); College Entrance Examinations; Repetition; Testing Problems; Test Wiseness; Sampling; Sample Size; Equated Scores; Evaluation Criteria; Item Response Theory; True Scores + Suchen Sie Ihr Suchwort? Aufnahmeprüfung; Wiederholung; Item-Response-Theorie
Abstract	Examinees who attempt the same test multiple times are often referred to as "repeaters." Previous studies suggested that repeaters should be excluded from the total sample before equating because repeater groups are distinguishable from non-repeater groups. In addition, repeaters might memorize anchor items, causing item drift under a non-equivalent anchor test (NEAT) design. However, under small sample equating conditions, removing repeaters might lead to smaller sample size, which increases sampling errors. Therefore, three solutions were investigated in the current study: (1) excluding repeaters, (2) excluding drifted anchor items, and (3) applying Rasch true score equating to maintain the population invariance if repeaters were removed. The results suggested excluding repeaters if the anchor were exposed to them. Circle arc equating can be applied if it is impossible to exclude all drifted anchor items. Applying Rasch true did outperform solutions. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01