TY - CONF T1 - On-line Calibration Using PARSCALE Item Specific Prior Method: Changing Test Population and Sample Size T2 - Paper presented at National Council on Measurement in Education Annual Meeting Y1 - 2001 A1 - Guo, F. A1 - Stone, E. A1 - Cruz, D. JF - Paper presented at National Council on Measurement in Education Annual Meeting CY - Seattle, Washington ER -