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2013

Educational Psychology

University of Iowa

Item-type multidimensionality

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Mixed-Format Test Score Equating: Effect Of Item-Type Multidimensionality, Length And Composition Of Common-Item Set, And Group Ability Difference, Wei Wang Dec 2013

Mixed-Format Test Score Equating: Effect Of Item-Type Multidimensionality, Length And Composition Of Common-Item Set, And Group Ability Difference, Wei Wang

Theses and Dissertations

Mixed-format tests containing both multiple-choice (MC) items and constructed-response (CR) items are now widely used in many testing programs. Mixed-format tests often are considered to be superior to tests containing only MC items although the use of multiple item formats leads to measurement challenges in the context of equating conducted under the common-item nonequivalent groups design (CINEG). The purpose of this dissertation was to investigate how various test characteristics and examinee characteristics influence CINEG mixed-format test score equating results.

Simulated data were used in this dissertation. Simulees' item responses were generated using items selected from one MC item pool and ...