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Kingsbury, G. Gage – 1985
A procedure for assessing content-area and total-test dimensionality which uses response function discrepancies (RFD) was studied. Three different versions of the RFD procedure were compared to Bejar's principal axis content-area procedure and Indow and Samejima's exploratory factor analytic technique. The procedures were compared in terms of the…
Descriptors: Achievement Tests, Comparative Analysis, Elementary Education, Estimation (Mathematics)
Peer reviewedSamejima, Fumiko – Applied Psychological Measurement, 1994
The Level-11 vocabulary subtest of the Iowa Tests of Basic Skills was analyzed using a two-stage latent trait approach and data set of 2,356 examinees, approximately 11 years of age. It is concluded that the nonparametric approach leads to efficient estimation of the latent trait. (SLD)
Descriptors: Achievement Tests, Distractors (Tests), Elementary Education, Elementary School Students
