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Comparison of IRT Observed-Score and True-Score 'Equatings.' [microform] / Frederic M. Lord and Marilyn S. Wingersky
Bib ID 5431925
Format BookBook, MicroformMicroform, OnlineOnline
Author
Lord, Frederic M
 
Online Versions
Description [Washington, D.C.] : Distributed by ERIC Clearinghouse, 1983 
38 p. 
Summary

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)

Notes

Sponsoring Agency: Office of Naval Research, Arlington, VA. Personnel and Training Research Programs Office.

Contract Number: N00014-80-C-0402.

Researchers.

May also be available online. Address as at 14/8/18: https://eric.ed.gov/

Reproduction Microfiche. [Washington D.C.]: ERIC Clearinghouse microfiches : positive. 
Subjects Comparative Analysis.  |  Equated Scores.  |  Estimation (Mathematics)  |  Latent Trait Theory.  |  Measurement Techniques.  |  Reliability.  |  Scores.  |  Statistical Analysis.  |  True Scores.
Form/genre Reports, Research.
Other authors/contributors Wingersky, Marilyn S., author  |  Educational Testing Service, Princeton, NJ
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