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Download full textGrant, Mary C. – Educational Testing Service, 2011
The "single group with nearly equivalent tests" (SiGNET) design proposed here was developed to address the problem of equating scores on multiple-choice test forms with very small single-administration samples. In this design, the majority of items in each new test form consist of items from the previous form, and the new items that were…
Descriptors: Multiple Choice Tests, Equated Scores, Test Items
Moses, Tim; Deng, Weiling; Zhang, Yu-Li – Educational Testing Service, 2010
In the equating literature, a recurring concern is that equating functions that utilize a single anchor to account for examinee groups' nonequivalence are biased when the groups are extremely different and/or when the anchor only weakly measures what the tests measure. Several proposals have been made to address this equating bias by incorporating…
Descriptors: Equated Scores, Data Collection, Statistical Analysis, Differences
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
Kim, Sooyeon; Walker, Michael E. – Educational Testing Service, 2011
This study examines the use of subpopulation invariance indices to evaluate the appropriateness of using a multiple-choice (MC) item anchor in mixed-format tests, which include both MC and constructed-response (CR) items. Linking functions were derived in the nonequivalent groups with anchor test (NEAT) design using an MC-only anchor set for 4…
Descriptors: Test Format, Multiple Choice Tests, Test Items, Gender Differences
Livingston, Samuel A. – Educational Testing Service, 2009
To many people, standardized testing means multiple-choice testing. However, some tests contain questions that require the test taker to produce the answer, rather than simply choosing it from a list. The required response can be as simple as the writing of a single word as complex as the design of a laboratory experiment to test a scientific…
Descriptors: Testing, Standardized Tests, Multiple Choice Tests, Laboratory Experiments
Sinharay, Sandip; Holland, Paul W. – Educational Testing Service, 2008
The nonequivalent groups with anchor test (NEAT) design involves missing data that are missing by design. Three popular equating methods that can be used with a NEAT design are the poststratification equating method, the chain equipercentile equating method, and the item-response-theory observed-score-equating method. These three methods each…
Descriptors: Equated Scores, Test Items, Item Response Theory, Data
