TY - Generic T1 - Unidimensional and multidimensional models for item response theory T2 - Proceedings of the 1982 Computerized Adaptive Testing Conference Y1 - 1985 A1 - McDonald, R. P. JF - Proceedings of the 1982 Computerized Adaptive Testing Conference PB - University of Minnesota, Department of Psychology, Psychometrics Methods Program CY - Minneapolis, MN. USA ER -