UMassAmherst: Research and Evaluation Methods
Research and Evaluation Methods

Professor Keller Receives Research Grant from CTB/McGraw-Hill

Professor Lisa Keller from the Research and Evaluation Methods Program at UMass has received a one-year grant from test publisher CTB/McGraw-Hill to study "Detecting and Deleting Anchor Set Items: Guidelines and Consequences." Her co-principal investigator on the project is REMP alumna (and CTB/McGraw-Hill researcher) Karla Egan. This is a one-year grant, funded by CTB/McGraw-Hill for approximately $56,000.

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.

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