Multiple test tasks are available for assessing L2 collocation knowledge. However, few studies have investigated the characteristics of a variety of recognition and recall tasks of collocation simultaneously, and most research on L2 collocations has focused on verb-noun and adjective-noun collocations. This study investigates (1) the relative…

An analysis of the skills necessary for performance on the Test of English as a Foreign Language (TOEFL) tends to support the view that there are important, although subtle, secondary dimensions present in the test. This research explored the feasibility of an item response theory (IRT) based method of modeling examinee performance on these…

The reliability of scores from four forms of the Test of English as a Foreign Language (TOEFL) was estimated using a hybrid item response theory model. It was found that there was very little difference between overall reliability when the testlet items were assumed to be independent and when their dependence was modeled. (Author/SLD)

This study provided an exploratory investigation of item features that might contribute to a lack of invariance of item parameters for the Test of English as a Foreign Language (TOEFL). Data came from seven forms of the TOEFL administered in 1989. Subjective and quantitative measures developed for the study provided consistent information related…