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)

The understanding of children and adults regarding four component properties of the arithmetic mean was studied. The component properties were: (1) the mean is a data point between extreme values of a score distribution; (2) the sum of deviations about the mean equals zero; (3) when the mean is calculated, any value of zero must be taken into…

This report contains details of the results of the Primary Assessment Program conducted in 1991 in urban and non-urban schools in the Northern Territory of Australia. The assessment program, conducted annually at years 5 and 7 in urban schools and at ages 10 years and above in non-urban schools, monitors achievement in English and mathematics. In…