%0 Conference Paper %B Paper presented at the annual conference of the National Council on Measurement in Education %D 2001 %T Monitoring items for changes in performance in computerized adaptive tests %A Smith, R. L. %A Wang, M.M. %A Wingersky, M. %A Zhao, C. %B Paper presented at the annual conference of the National Council on Measurement in Education %C Seattle, Washington %G eng