Accession Number : ADA133871

Title :   Comparison of IRT Observed-Score and True-Score 'Equatings'.

Descriptive Note : Technical rept.,

Corporate Author : EDUCATIONAL TESTING SERVICE PRINCETON NJ

Personal Author(s) : Lord,Frederic M ; Wingersky,Marilyn S

PDF Url : ADA133871

Report Date : Jul 1983

Pagination or Media Count : 14

Abstract : Two methods of 'equating' tests using item response theory are compared, one using true scores, the other using estimated observed scores. On the data studied, they yield almost indistinguishable results. This is a reassuring result for users of IRT equating methods. (Author)

Descriptors :   *Performance(Human), *Scoring, *Test construction(Psychology), Aptitude tests, Achievement tests, Instrumentation, Validation, Standards, Correlation techniques, Comparison, Mental ability, Response, Predictions

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE