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dc.contributor.authorLi, Feiming
dc.date.accessioned2014-03-04T16:21:31Z
dc.date.available2014-03-04T16:21:31Z
dc.date.issued2008-12
dc.identifier.otherli_feiming_200812_phd
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/li_feiming_200812_phd
dc.identifier.urihttp://hdl.handle.net/10724/25233
dc.description.abstractThis dissertation presents a modified higher-order DINA model for separating the source of construct-relevant (i.e., benign) differential item functioning (DIF) from construct irrelevant (i.e., adverse) DIF. The model-based method provides a natural framework for detecting both differential attribute functioning (DAF) and DIF in a cognitive diagnostic modeling framework: DIF detection ensures test fairness and improves test validity in terms of group difference in item performance after conditioning on attribute mastery profiles, whereas DAF detection provides a good understanding of group strength and weakness in terms of a set of cognitive attributes after conditioning on general ability. An MCMC algorithm employing Gibbs sampling was used to estimate the new model and a simulation study was done to examine model recovery, Type I error rates, and power under different testing conditions. For DIF detection, the model-based method was also compared with the MH method using two types of matching criteria, a total score as the matching criterion and an attribute profile as the matching criterion. Finally, a statewide mathematics test was used to illustrate the implementation and possible limitations of the new method.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectCognitive diagnostic assessment
dc.subjectmodified higher-order DINA model
dc.subjectdifferential item functioning
dc.subjectdifferential attribute functioning
dc.titleA modified higher-order DINA model for detecting differential item functioning and differential attribute functioning
dc.typeDissertation
dc.description.degreePhD
dc.description.departmentEducational Psychology and Instructional Technology
dc.description.majorEducational Psychology
dc.description.advisorAllan Cohen
dc.description.committeeAllan Cohen
dc.description.committeeJonathan Templin
dc.description.committeeNicole Lazar
dc.description.committeeSeock-Ho Kim
dc.description.committeeDeborah Bandalos


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