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ERIC Number: ED243965
Record Type: Non-Journal
Publication Date: 1984-Apr-16
Pages: 11
Abstractor: N/A
Reference Count: N/A
Item Selection and Pre-equating with Empirical Item Characteristic Curves.
Livingston, Samuel A.
An empirical item characteristic curve shows the probability of a correct response as a function of the student's total test score. These curves can be estimated from large-scale pretest data. They enable test developers to select items that discriminate well in the score region where decisions are made. A similar set of curves can be used to predict the equating relationship between two forms of the test. These curves are based on the common-item score instead of the total score. They make it possible to estimate raw-to-scale score conversions before the test is administered. (Author)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: New Jersey College Basic Skills Placement Test