Does Content Knowledge Affect TOEFL iBT Reading Performance? A Confirmatory Approach to Differential Item Functioning TOEFL iBT DIF CBT

Author(s):: Liu, Ou Lydia; Schedl, Mary A.; Malloy, Jeanne; Kong, Nan
Publication Year:: 2009
Report Number:: RR-09-29, TOEFLiBT-09
Source:: ETS Research Report
Document Type:: Report
Page Count:: 29
Subject/Key Words:: Test of English as a Foreign Language (TOEFL), Internet Based Testing (iBT), Content Schemata, Differential Item Functioning (DIF), Differential Bundle Functioning, Reading Comprehension, Content Knowledge, Computer-Based Testing (CBT)

Abstract

Hypotheses are provided for the DIF occurrences. Implications for fairness issues in test development are also discussed.