Maintenance of vertical scales under conditions of item parameter drift and Rasch model-data misfit
With scant research to draw upon with respect to the maintenance of vertical scales over time, decisions around the creation and performance of vertical scales over time necessarily suffers due to the lack of information. Undetected item parameter drift (IPD) presents one of the greatest threats to...
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| Language: | ENG |
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ScholarWorks@UMass Amherst
2010
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| Online Access: | https://scholarworks.umass.edu/dissertations/AAI3409829 |