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Determining the Anchor Composition for a Mixed-Format Test: Evaluation of Subpopulation Invariance of Linking Functions
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Kim, Sooyeon; Walker, Michael – Applied Measurement in Education, 2012
This study examined the appropriateness of the anchor composition in a mixed-format test, which includes both multiple-choice (MC) and constructed-response (CR) items, using subpopulation invariance indices. Linking functions were derived in the nonequivalent groups with anchor test (NEAT) design using two types of anchor sets: (a) MC only and (b)…
Descriptors: Multiple Choice Tests, Test Format, Test Items, Equated Scores
Examining Two Strategies to Link Mixed-Format Tests Using Multiple-Choice Anchors. Research Report. ETS RR-10-18
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Walker, Michael E.; Kim, Sooyeon – Educational Testing Service, 2010
This study examined the use of an all multiple-choice (MC) anchor for linking mixed format tests containing both MC and constructed-response (CR) items, in a nonequivalent groups design. An MC-only anchor could effectively link two such test forms if either (a) the MC and CR portions of the test measured the same construct, so that the MC anchor…
Descriptors: Equated Scores, Test Format, Multiple Choice Tests, Statistical Analysis