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ERIC Number: EJ933681
Record Type: Journal
Publication Date: 2010-Jan
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-1531-7714
EISSN: N/A
Use of Robust z in Detecting Unstable Items in Item Response Theory Models
Huynh, Huynh; Meyer, Patrick
Practical Assessment, Research & Evaluation, v15 n2 Jan 2010
The first part of this paper describes the use of the robust z[subscript R] statistic to link test forms using the Rasch (or one-parameter logistic) model. The procedure is then extended to the two-parameter and three-parameter logistic and two-parameter partial credit (2PPC) models. A real set of data was used to illustrate the extension. The linking results illustrate the efficacy of the robust z[subscript R] vis-a-vis some of the most commonly used processes such as the Stocking and Lord (1983) linking process. (Contains 2 tables.)
Dr. Lawrence M. Rudner. e-mail: editor@pareonline.net; Web site: http://pareonline.net
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A