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Peer reviewedQualls-Payne, Audrey L. – Journal of Educational Measurement, 1992
Six methods for estimating the standard error of measurement (SEM) at specific score levels are compared by comparing score level SEM estimates from a single test administration to estimates from two test administrations, using Iowa Tests of Basic Skills data for 2,138 examinees. L. S. Feldt's method is preferred. (SLD)
Descriptors: Comparative Testing, Elementary Education, Elementary School Students, Error of Measurement
Samejima, Fumiko – 1984
Simple sum procedure of the conditional PDF approach (plausiblity of distractor function) combined with the normal approach method was applied for estimating the plausibility functions of the distractors of the Level II vocabulary subtest items of the Iowa Tests of Basic Skills. In so doing, the normal ogive model was adopted for the correct…
Descriptors: Adaptive Testing, Elementary Secondary Education, Estimation (Mathematics), Item Analysis
