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ERIC Number: EJ407918
Record Type: Journal
Publication Date: 1989
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Adaptive Estimation When the Unidimensionality Assumption of IRT Is Violated.
Folk, Valerie Greaud; Green, Bert F.
Applied Psychological Measurement, v13 n4 p373-89 Dec 1989
Some effects of using unidimensional item response theory (IRT) were examined when the assumption of unidimensionality was violated. Adaptive and nonadaptive tests were used. It appears that use of a unidimensional model can bias parameter estimation, adaptive item selection, and ability estimation for the two types of testing. (TJH)
Descriptors: Ability Identification, Adaptive Testing, Computer Assisted Testing, Computer Simulation, Estimation (Mathematics), Item Response Theory
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A