TY - CONF T1 - Impact of several computer-based testing variables on the psychometric properties of credentialing examinations T2 - Paper presented at the Annual Meeting of the National Council on Measurement in Education Y1 - 2001 A1 - Xing, D. A1 - Hambleton, R. K. JF - Paper presented at the Annual Meeting of the National Council on Measurement in Education CY - Seattle WA ER -