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Applied Measurement in…

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Forsyth, Robert A.	1
Way, Walter D.	1

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IRT Ability Estimates from Customized Achievement Tests without Representative Content Sampling.

Peer reviewed

Way, Walter D.; And Others – Applied Measurement in Education, 1989

The effects of using item response theory (IRT) ability estimates based on customized tests formed by selecting areas from a nationally standardized achievement test were examined. For some populations, in some conditions, IRT ability estimates can be equivalent to scores based on full-length tests. (SLD)

Descriptors: Achievement Tests, Adaptive Testing, Content Validity, Elementary Education

Three Applications of Customized Testing in Local School Districts.

Peer reviewed

Forsyth, Robert A.; And Others – Applied Measurement in Education, 1992

Eighth grade teachers in three local school districts helped customize two standardized norm-referenced tests for ninth graders to investigate effects of deleting some items and adding locally constructed items. Results indicate that percentile ranks for the customized tests could be very different from those for the complete test. (SLD)

Descriptors: Adaptive Testing, Comparative Testing, Elementary Secondary Education, Grade 9