Computerized adaptive testing (CAT) has unsurpassable advantages over traditional testing. It has become the mainstream in large scale examinations in modern society. This paper gives a brief introduction to CAT including differences between traditional testing and CAT, the principles of CAT, psychometric theory and computer algorithms of CAT, the…

Investigates the performance of students from different language backgrounds, using data from a computer-adaptive Japanese grammar test developed as a placement tool. Findings indicate item difficulties to be quite different for each group of candidates and imply that when candidates are from a different background from that of the trial…