TY - CONF T1 - A Heuristic Of CAT Item Selection Procedure For Testlets T2 - Annual Conference of the International Association for Computerized Adaptive Testing Y1 - 2011 A1 - Yuehmei Chien A1 - David Shin A1 - Walter Denny Way KW - CAT KW - shadow test KW - testlets JF - Annual Conference of the International Association for Computerized Adaptive Testing ER -