How unidimensional are tests comprising both multiple-choice and free-response items?
Subtitle: an analysis of two tests
By: Howard Wainer, David Thissen, Xiang-Bo Wang
Contributors: Thissen, David; Wang, Xiang-Bo
Series: Program statistics research technical report -- no. 93-32; Research report -- no. 93-28; Research report (Educational Testing Service) -- RR-93-28
Publisher: Educational Testing Service
Published: 1993
Place of publication: Princeton, N.J
Language: eng
Number of pages: 12
Subjects: Examinations; Evaluation; Design and construction
Notes: "May 1993."

Includes bibliographical references (p. 11-12).