Technical characteristics of the peabody individual achievement test as a function of item arrangement and basal and ceiling rules

Robert Browning, John Salvia, James E. Ysseldyke

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The effects that item order and basal and ceiling rules have on test means, variances, and internal consistency estimates for the PIAT mathematics and reading recognition subtests were examined. Seven items on the math subtest and one item on the reading recognition subtest were significantly easier or harder than their test placement indicated. The use of basal and ceiling rules had a pronounced effect on the means, variances, and reliabilities on the multiple choice math subtest, while the rules' effects on the reading recognition subtests were minor. Item order also affected scores on the math subtest.

Original languageEnglish (US)
Pages (from-to)4-7
Number of pages4
JournalPsychology in the Schools
Volume16
Issue number1
DOIs
StatePublished - Jan 1979

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