Detecting and Deleting Anchor Set Items: Guidelines and Consequences
This study seeks to provide guidance to practitioners regarding the
appropriate course of action to take when items that are used in equating
exhibit differential functioning across administrations. To that end, different
methods for detecting aberrant items will be explored, and criteria used for
determining when it may be best to delete the item from the equating will be
established. The criteria for evaluation will be dependent upon effect that
deleting the item or retaining the item has on the classification of examinees
and the determination of AYP. This is a one-year grant, funded by
CTB/McGraw-Hill for approximately $56,000, with UMass' Assistant Professor Lisa
A. Keller and CTB's Karla Egan (a UMass alumna) as co-principal investigators.
More info about
CTB/McGraw-Hill can be found on their website.