TY - CONF T1 - To stratify or not: An investigation of CAT item selection procedures under practical constraints T2 - Paper presented at the Annual meeting of the National Council on Measurement in Education Y1 - 2003 A1 - Deng, H. A1 - Ansley, T. JF - Paper presented at the Annual meeting of the National Council on Measurement in Education CY - Chicago IL N1 - {PDF file, 186 KB} ER -