library bookshelves


View the latest publications from members of the NBME research team

Showing 1 - 2 of 2 Research Library Publications
Posted: July 4, 2022 | Thai Q. Ong, Dena A. Pastor

Applied Psychological Measurement: Volume 46, issue 2, page(s) 571-588


This study evaluates the degree to which position effects on two separate low-stakes tests administered to two different samples were moderated by different item (item length, number of response options, mental taxation, and graphic) and examinee (effort, change in effort, and gender) variables. Items exhibited significant negative linear position effects on both tests, with the magnitude of the position effects varying from item to item.

Posted: June 3, 2020 | B. E. Clauser, M. Kane, J. C. Clauser

Journal of Educational Measurement: Volume 57, Issue 2, Pages 216-229


This article presents two generalizability-theory–based analyses of the proportion of the item variance that contributes to error in the cut score. For one approach, variance components are estimated on the probability (or proportion-correct) scale of the Angoff judgments, and for the other, the judgments are transferred to the theta scale of an item response theory model before estimating the variance components.