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ERIC Number: EJ853316
Record Type: Journal
Publication Date: 2009
Pages: 14
Abstractor: As Provided
Reference Count: 9
ISSN: ISSN-0022-0655
The Circle-Arc Method for Equating in Small Samples
Livingston, Samuel A.; Kim, Sooyeon
Journal of Educational Measurement, v46 n3 p330-343 Fall 2009
This article suggests a method for estimating a test-score equating relationship from small samples of test takers. The method does not require the estimated equating transformation to be linear. Instead, it constrains the estimated equating curve to pass through two pre-specified end points and a middle point determined from the data. In a resampling study with two test forms that differed substantially in difficulty, the proposed method compared favorably with other equating methods, especially for equating scores below the 10th percentile and above the 90th percentile.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A