Balancing Information with Imbalanced Item Banks in Multidimensional CAT
Culbertson, Michael J.
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NCME-2014-Culbertson.pdf
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https://hdl.handle.net/2142/48911
Description
Title
Balancing Information with Imbalanced Item Banks in Multidimensional CAT
Author(s)
Culbertson, Michael J.
Issue Date
2014-04-06
Keyword(s)
Multidimensional Item Response Theory
Computerized Adaptive Testing
Mutual information
Date of Ingest
2014-04-21T21:24:40Z
Abstract
In multidimensional Computerized Adaptive Testing (CAT), if item banks provide more information on one dimension than others, most item selection algorithms will over-emphasize the information-rich dimension. This study evaluates two proposed selection criteria based on mutual information that are intended to equalize ability estimate precision across dimensions.
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