TY - ABST T1 - Unidimensional approximations for a computerized adaptive test when the item pool and latent space are multidimensional (Research Report 97-5) Y1 - 1997 A1 - Spray, J. A. A1 - Abdel-Fattah, A. A. A1 - Huang, C.-Y. A1 - Lau, CA CY - Iowa City IA: ACT Inc ER -