Several exploratory analyses of the fifths data generated by Test of English as a Foreign Language (TOEFL) item analyses were developed in order to evaluate the effects of options on the discriminability of difficult items and to identify difficult items with low, unreliable biserials that had been rejected by test developers, but for which…

The central purpose of this study was to empirically evaluate an in-depth vocabulary knowledge measure in the context of developing the new TOEFL test. The study was carried out with a sample of 207 international students attending an intensive English as a second language (ESL) program in a major Canadian university, in order to determine whether…

One of the item types in the Listening Comprehension section of the Test of English as a Foreign Language (TOEFL) test is the dialogue. Because the dialogue item pool needs to have an appropriate balance of items at a range of difficulty levels, test developers have examined items at various difficulty levels in an attempt to identify their…

Previous research on differences in the reliability, validity, and difficulty of essay tests given under different timing conditions has indicated that giving examinees more time to complete an essay may raise their scores to a certain extent, but does not change the meaning of those scores, or the rank ordering of students. There is no evidence…

Methods of computerized adaptive testing using conventional scoring methods in order to develop a computerized placement test for the Test of English as a Foreign Language (TOEFL) were studied. As a consequence of simulation studies during the first phase of the study, the multilevel testing paradigm was adopted to produce three test levels…