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ERIC Number: ED236207
Record Type: RIE
Publication Date: 1983-Jul
Pages: 38
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Comparison of IRT Observed-Score and True-Score 'Equatings.'
Lord, Frederic M.; Wingersky, Marilyn S.
Two methods of 'equating' tests using item response theory (IRT) are compared, one using true scores, the other using the estimated distribution of observed scores. On the data studied, they yield almost indistinguishable results. This is a reassuring result for users of IRT equating methods. (Author)
Descriptors: Comparative Analysis, Equated Scores, Estimation (Mathematics), Latent Trait Theory, Measurement Techniques, Reliability, Scores, Statistical Analysis, True Scores
Publication Type: Reports - Research
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: Office of Naval Research, Arlington, VA. Personnel and Training Research Programs Office.
Authoring Institution: Educational Testing Service, Princeton, NJ.
Grant or Contract Numbers: N/A