TY - CONF T1 - An investigation of the impact of items that exhibit mild DIF on ability estimation in CAT T2 - Paper presented at the annual meeting of the National Council on Measurement in Education Y1 - 2001 A1 - Jennings, J. A. A1 - Dodd, B. G. A1 - Fitzpatrick, S. JF - Paper presented at the annual meeting of the National Council on Measurement in Education CY - Seattle WA ER -