TY - ABST T1 - Estimating item parameters from classical indices for item pool development with a computerized classification test (ACT Research 2000-4) Y1 - 2000 A1 - Chang, C.-Y. A1 - Kalohn, J.C. A1 - Lin, C.-J. A1 - Spray, J. CY - Iowa City IA, ACT, Inc ER -