The central purpose of this paper is to examine validity problems arising from the multiple-choice items and technical passages in the Test of English as a Foreign Language Internet-based Test (TOEFL iBT) reading section, primarily concentrating on construct-irrelevant variance (Messick, 1989). My personal TOEFL iBT experience, along with my…

Recounts the use of a computer-mediated proficiency test in an intensive international teaching assistant workshop. Both traditional raw score analyses and item response theory analyses done on the test data are described in detail. Indicated that the test was not suitable for making exemption and retention decisions with this particular group of…