Research Report Detail
| Title | ||
|---|---|---|
| Equating Achievement Tests Using Samples Matched on Ability
Alicia P. Schmitt; Daniel R. Eignor; | ||
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01/01/1990 The results of five equating methods were compared: (1) Tucker, (2) Levine equally reliable, (3) Levine unequally reliable, (4) frequency estimation equipercentile, and (5) chained equipercentile. These methods were used with an internal common-item anchor-test data collection design with reasonably parallel forms of College Board Achievement Tests in Biology, Chemistry, Mathematics Level II, American History and Social Studies, and French. The results of this study cast serious doubts on the viability of an anchor-test data collection design when samples that differ in ability are used to equate Achievement Tests of the type investigated in this study. |
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