A comparative study of online pretest item calibration/scaling methods in CAT
By: Jae-Chun Ban ... [et al.].
Contributors: Ban, Jae-Chun.; American College Testing Program.
Series: ACT research report series -- 2000-11.
Publisher: ACT, Inc.
Place of publication: Iowa City, Iowa
Number of pages: 26
Subjects: Computer adaptive testing.; Examinations -- Design and construction -- Data processing.; Item response theory -- Mathematical models.; Scaling (Social sciences)
Notes: "December 2000"--Cover.

Includes bibliographical references (p. 19-20).