NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ752980
Record Type: Journal
Publication Date: 2007-Mar
Pages: 18
Abstractor: Author
ISSN: ISSN-0191-491X
Measuring the Equivalence of Item Difficulty in the Various Versions of an International Test
Grisay, Aletta; Monseur, Christian
Studies in Educational Evaluation, v33 n1 p69-86 Mar 2007
In this article, data from the Reading Literacy study conducted in 2000 and 2001 as part of the OECD "Programme for International Student Assessment" (PISA) were analysed in order to explore equivalence issues across the 47 test adaptations in various languages of instruction that were used by the participating countries. On average, about 82% of the variance in relative item difficulty were found to be common across the various national versions. However, the index of equivalence appeared to be lower than desirable in certain categories of countries. Tentative analyses were conducted to better understand the reasons behind these differences.
Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Program for International Student Assessment
Grant or Contract Numbers: N/A