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ERIC Number: EJ1037219
Record Type: Journal
Publication Date: 2014
Pages: 20
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-0022-0655
Preequating with Empirical Item Characteristic Curves: An Observed-Score Preequating Method
Zu, Jiyun; Puhan, Gautam
Journal of Educational Measurement, v51 n3 p281-300 Fall 2014
Preequating is in demand because it reduces score reporting time. In this article, we evaluated an observed-score preequating method: the empirical item characteristic curve (EICC) method, which makes preequating without item response theory (IRT) possible. EICC preequating results were compared with a criterion equating and with IRT true-score preequating conversions. Results suggested that the EICC preequating method worked well under the conditions considered in this study. The difference between the EICC preequating conversion and the criterion equating was smaller than 0.5 raw-score points (a practical criterion often used to evaluate equating quality) between the 5th and 95th percentiles of the new form total score distribution. EICC preequating also performed similarly or slightly better than IRT true-score preequating.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A