Title: On the complementarity of classical test theory and item response models: item difficulty estimates and computerized adaptive testing
Authors: DINIS MOTA DA COSTA PATRICIAFERRAO Maria Eugenia
Citation: ENSAIO vol. 23 no. 88 p. 593-610
Publisher: FUNDACAO CESGRANRIO
Publication Year: 2015
JRC N°: JRC93985
ISSN: 0104-4036
URI: http://www.redalyc.org/pdf/3995/399541533004.pdf
http://publications.jrc.ec.europa.eu/repository/handle/JRC93985
DOI: 10.1590/S0104-40362015000300003
Type: Articles in periodicals and books
Abstract: This study aims to provide statistical evidence of the complementarity between classical test theory and item response models for certain educational assessment purposes. Such complementarity might support, at a reduced cost, future development of innovative procedures for item calibration in adaptive testing. Classical test theory and the generalized partial credit model are applied to tests comprising multiple choice, short answer, completion, and open response items scored partially. Datasets are derived from the tests administered to the Portuguese population of students enrolled in the 4th and 6th grades. The results show a very strong association between the estimates of difficulty obtained from classical test theory and item response models, corroborating the statistical theory of mental testing.
JRC Directorate:Joint Research Centre Corporate Activities

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