TY - CONF T1 - Practitioner’s Approach to Identify Item Drift in CAT T2 - Annual Conference of the International Association for Computerized Adaptive Testing Y1 - 2011 A1 - Huijuan Meng A1 - Susan Steinkamp A1 - Paul Jones A1 - Joy Matthews-Lopez KW - CUSUM method KW - G2 statistic KW - IPA KW - item drift KW - item parameter drift KW - Lord's chi-square statistic KW - Raju's NCDIF JF - Annual Conference of the International Association for Computerized Adaptive Testing ER -