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Equating Methods and Sampling Designs.

Peer reviewed

Dorans, Neil J. – Applied Measurement in Education, 1990

The equating methods and sampling designs used in the empirical studies in this special issue on the use of matched samples for test equating are described. Four requisites for equating are listed, and the invariance of equating functions requisite is identified as the focus of this issue. (SLD)

Descriptors: Equated Scores, Equations (Mathematics), Evaluation Methods, Item Response Theory

Applications of Latent Class Modeling to Investigate the Structure Underlying Reading Comprehension Items.

Peer reviewed

Davey, Beth; Macready, George B. – Applied Measurement in Education, 1990

The usefulness of latent class modeling in addressing several measurement issues is demonstrated via a study of 74 good and 74 poor readers in grades 5 and 6. Procedures were particularly useful for assessing the hierarchical relation among skills and for exploring issues related to item domains. (SLD)

Descriptors: Comparative Testing, Elementary School Students, Grade 5, Grade 6