ERIC Number: ED571805
Record Type: Non-Journal
Publication Date: 2015-Apr
Pages: 37
Abstractor: As Provided
ISBN: N/A
ISSN: N/A
EISSN: N/A
Semi-Parametric Item Response Functions in the Context of Guessing. CRESST Report 844
Falk, Carl F.; Cai, Li
National Center for Research on Evaluation, Standards, and Student Testing (CRESST)
We present a logistic function of a monotonic polynomial with a lower asymptote, allowing additional flexibility beyond the three-parameter logistic model. We develop a maximum marginal likelihood based approach to estimate the item parameters. The new item response model is demonstrated on math assessment data from a state, and a computationally efficient strategy for choosing the order of the polynomial is demonstrated and tested.
Descriptors: Guessing (Tests), Item Response Theory, Mathematics Instruction, Mathematics Tests, Evaluation Methods, Algebra, Mathematical Formulas, Models, Computation, Standardized Tests, Grade 4, Simulation
National Center for Research on Evaluation, Standards, and Student Testing (CRESST). 300 Charles E Young Drive N, GSE&IS Building 3rd Floor, Mailbox 951522, Los Angeles, CA 90095-1522. Tel: 310-206-1532; Fax: 310-825-3883; Web site: http://www.cresst.org
Publication Type: Reports - Descriptive
Education Level: Grade 4; Intermediate Grades; Elementary Education
Audience: N/A
Language: English
Sponsor: Institute of Education Sciences (ED)
Authoring Institution: National Center for Research on Evaluation, Standards, and Student Testing (CRESST)
IES Funded: Yes
Grant or Contract Numbers: R305D140046