@conference {2081, title = {Practitioner{\textquoteright}s Approach to Identify Item Drift in CAT}, booktitle = {Annual Conference of the International Association for Computerized Adaptive Testing}, year = {2011}, month = {10/2011}, keywords = {CUSUM method, G2 statistic, IPA, item drift, item parameter drift, Lord{\textquoteright}s chi-square statistic, Raju{\textquoteright}s NCDIF}, author = {Huijuan Meng and Susan Steinkamp and Paul Jones and Joy Matthews-Lopez} }