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ERIC Number: ED390895
Record Type: RIE
Publication Date: 1993-May
Pages: 16
Abstractor: N/A
Reference Count: N/A
How Unidimensional Are Tests Comprising Both Multiple-Choice and Free-Response Items? An Analysis of Two Tests. Program Statistics Research Technical Report No. 93-32.
Wainer, Howard; And Others
The relationship between the multiple-choice and free-response sections of the Computer Science and Chemistry tests of the College Board's Advanced Placement program was studied. Confirmatory factor analysis showed that the free-response sections measure the same underlying proficiency as the multiple-choice sections for the most part. However, there was a significant, if relatively small, amount of local dependence among the free-response items that produced a small degree of multidimensionality for each test. Data from the Computer Science test came from 2 random samples of 1,000 students each from a previous study of the 1988 test administration. Data from the Chemistry test came from a sample of 2,000 students choosing one free-response problem and 2,000 choosing another. (Contains 4 tables, 1 figure, and 17 references.) (Author/SLD)
Publication Type: Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: North Carolina State Dept. of Public Instruction, Raleigh.
Authoring Institution: Educational Testing Service, Princeton, NJ.
Identifiers: Advanced Placement Examinations (CEEB); Confirmatory Factor Analysis; Free Response Test Items; Multidimensionality (Tests); Unidimensionality (Tests)