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ERIC Number: EJ1109847
Record Type: Journal
Publication Date: 2012-Jul
Pages: 22
Abstractor: As Provided
ISSN: EISSN-2330-8516
Does Preequating Work? An Investigation into a Preequated Testlet-Based College Placement Exam Using Postadministration Data. Research Report. ETS RR-12-12
Gao, Rui; He, Wei; Ruan, Chunyi
ETS Research Report Series, Jul 2012
In this study, we investigated whether preequating results agree with equating results that are based on observed operational data (postequating) for a college placement program. Specifically, we examined the degree to which item response theory (IRT) true score preequating results agreed with those from IRT true score postequating and from observed score equating. Three academic subjects were examined in this study: analyzing and interpreting literature, American government, and college algebra. The findings suggested that differences between equating results from IRT true score preequating and postequating varied from subject to subject. In general, IRT true score postequating agreed with IRT true score preequating for most of the forms for a test subject. Any difference among the equating results can be attributed to the way through which items were pretested, contextual/order effects, or the violation of IRT assumptions.
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: ACT Assessment; College Level Examination Program; Graduate Record Examinations; SAT (College Admission Test)
Grant or Contract Numbers: N/A