This article introduces a blocked-design procedure for cognitive diagnosiscomputerized adaptive testing (CD-CAT), which allows examinees to review itemsand change their answers during test administration. Four blocking versions ofthe new procedure were proposed. In addition, the impact of several factors,namely, item quality, generating model, block size, and test length, on theclassification rates was investigated. Three popular item selection indices inCD-CAT were used and their efficiency compared using the new procedure. Anadditional study was carried out to examine the potential benefit of itemreview. The results showed that the new procedure is promising in that allowingitem review resulted only in a small loss in attribute classification accuracyunder some conditions. Moreover, using a blocked-design CD-CAT is beneficial tothe extent that it alleviates the negative impact of test anxiety on examinees’true performance.
展开▼
