TY - JOUR T1 - a-stratified multistage computerized adaptive testing with b blocking JF - Applied Psychological Measurement Y1 - 2001 A1 - Chang, Hua-Hua A1 - Qian, J. A1 - Yang, Z. KW - computerized adaptive testing AB - Proposed a refinement, based on the stratification of items developed by D. Weiss (1973), of the computerized adaptive testing item selection procedure of H. Chang and Z. Ying (1999). Simulation studies using an item bank from the Graduate Record Examination show the benefits of the new procedure. (SLD) VL - 25 ER -