This study examined the extent to which log-linear smoothing could improve the accuracy of differential item functioning (DIF) estimates in small samples of examinees. Examinee responses from a certification test were analyzed using White examinees in the reference group and African American examinees in the focal group. Using a simulation…

As an alternative to adaptation, tests may also be developed simultaneously in multiple languages. Although the items on such tests could vary substantially, scores from these tests may be used to make the same types of decisions about different groups of examinees. The ability to make such decisions is contingent upon setting performance…

A procedure is described for estimating the reliability and conditional standard errors of measurement of scale scores incorporating the discrete transformation of raw scores to scale scores. The method is illustrated using a strong true score model, and practical applications are described. (SLD)

This paper presents the characteristics, properties and development of the National Reference Scale for reading. This new scale is the result of a reanalysis of the Anchor Test Study data using Rasch model procedures, in an effort to produce equated scores among all reading tests included in that study. (Author/JKS)

Use of the Rasch model for vertical equating of tests is discussed. Although use of the model is promising, empirical results raise questions about the adequacy of the Rasch model. Latent trait models with more parameters may be necessary. (JKS)

A socially moderated link was established between statewide achievement results and the National Assessment of Educational Progress (NAEP) by using the same achievement level descriptions in an Iowa Test of Basic Skills standard-setting and an NAEP standard setting study. A statistically moderated link was established through an equipercentile…