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ERIC Number: EJ933574
Record Type: Journal
Publication Date: 2011
Pages: 16
Abstractor: As Provided
ISSN: ISSN-1530-5058
Impact of Inclusion or Exclusion of Repeaters on Test Equating
Puhan, Gautam
International Journal of Testing, v11 n3 p215-230 2011
This study examined the effect of including or excluding repeaters on the equating process and results. New forms of two tests were equated to their respective old forms using either all examinees or only the first timer examinees in the new form sample. Results showed that for both tests used in this study, including or excluding repeaters in the new form sample had very little impact on the final equating results. These findings do not provide enough evidence to support routine exclusion of repeaters from the equating sample before conducting the equating. Results of some additional analyses showing the impact on random equating error due to the reduction in sample size caused by excluding repeaters are presented. Finally, some examples of simple analyses to assist the testing practitioner when making a judgment about whether including or excluding repeaters in the equating sample is reasonable are provided. (Contains 2 tables and 4 figures.)
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A