TY - CONF T1 - The effect of population distribution and methods of theta estimation on CAT using the rating scale model T2 - Paper presented at the annual meeting of the American Educational Research Association Y1 - 1995 A1 - Chen, S. A1 - Hou, L. A1 - Fitzpatrick, S. J. A1 - Dodd, B. G. JF - Paper presented at the annual meeting of the American Educational Research Association CY - San Francisco ER -