TY - CONF T1 - Impact of selected factors on the psychometric quality of credentialing examinations administered with a sequential testlet design T2 - Paper presented at the annual meeting of the National Council on Measurement in Education Y1 - 2002 A1 - Hambleton, R. K. A1 - Jodoin, M. A1 - Zenisky, A. L. JF - Paper presented at the annual meeting of the National Council on Measurement in Education CY - New Orleans LA ER -