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ERIC Number: EJ914221
Record Type: Journal
Publication Date: 2011-Feb
Pages: 19
Abstractor: As Provided
Reference Count: 37
ISBN: N/A
ISSN: ISSN-0013-1644
Using Explanatory Item Response Theory Modeling to Investigate Context Effects of Differential Item Functioning for Students with Disabilities
Randall, Jennifer; Cheong, Yuk Fai; Engelhard, George, Jr.
Educational and Psychological Measurement, v71 n1 p129-147 Feb 2011
To address whether or not modifications in test administration influence item functioning for students with disabilities on a high-stakes statewide problem-solving assessment, a sample of 868 students (with and without disabilities) from 74 Georgia schools were randomly assigned to one of three testing conditions (resource guide, calculator, or standard administration). The authors describe a conceptual framework for investigating measurement invariance, specifically differential item functioning within the context of assessing students with disabilities. Specifically, we illustrate how the hierarchical generalized linear model, an explanatory model that incorporates item response models into hierarchical models in multilevel settings, can be used to explore issues of measurement invariance traditionally addressed using descriptive item response models, that is, the many-facet Rasch model. Results obtained from the two approaches are reported and discussed. (Contains 4 tables.)
SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Grade 7; Middle Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Georgia
Identifiers - Assessments and Surveys: Georgia Criterion Referenced Tests