TitleComputerized adaptive testing: A comparison of three content balancing methods
Publication TypeJournal Article
Year of Publication2003
AuthorsLeung, C-K, Chang, H-H, Hau, K-T
JournalThe Journal of Technology, Learning and Assessment
Publication Languageeng

Content balancing is often a practical consideration in the design of computerized adaptive testing (CAT). This study compared three content balancing methods, namely, the constrained CAT (CCAT), the modified constrained CAT (MCCAT), and the modified multinomial model (MMM), under various conditions of test length and target maximum exposure rate. Results of a series of simulation studies indicate that there is no systematic effect of content balancing method in measurement efficiency and pool utilization. However, among the three methods, the MMM appears to consistently over-expose fewer items.