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ERIC Number: EJ1124807
Record Type: Journal
Publication Date: 2016-May
Pages: 19
Abstractor: As Provided
ISBN: N/A
ISSN: EISSN-2330-8516
Dimensionality Analyses of the "GRE"® revised General Test Verbal and Quantitative Measures. ETS GRE® Board Research Report. ETS GRE®-16-02. ETS Research Report. RR-16-20
Robin, Frédéric; Bejar, Isaac; Liang, Longjuan; Rijmen, Frank
ETS Research Report Series, May 2016
Exploratory and confirmatory factor analyses of domestic data from the" GRE"® revised General Test, introduced in 2011, were conducted separately for the verbal (VBL) and quantitative (QNT) reasoning measures to evaluate the unidimensionality and local independence assumptions required by item response theory (IRT). Results based on data from the period immediately after the launch of the revised test and data from a year later showed that very little local item dependence was present and that a predominant single factor accounted for each of the data sets. These results provide evidence supporting the assumptions that underlie the use of the unidimensional 2-parameter IRT model for scoring and contribute evidence for the validity of GRE scores and their use.
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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: Graduate Record Examinations