The relative difficulty ratio (RDR) is used as a method of representing test difficulty. The RDR is the ratio of a test mean to the ideal mean, the point midway between the perfect score and the mean chance score for the test. The RDR tranformation is a linear scale conversion method but not a linear equating method in the classical sense. The…

Two methods are presented for comparing distributions, such as achievement test score distributions, for distinctly different groups of persons in such a way that the comparison will not be influenced by the particular metric of the test being used. Both methods use percentile scores. One method, attributed to Flanagan, fits a straight line to the…

Correlations with Binet IQ in the ITPA normative sample were corrected for restricted intelligence range. The corrected correlation for the Psycholinguistic Quotient is as high as that between the WISC and the Binet, a finding that raises a serious question about the construct validity of the ITPA. (Author)

Results show that the mean number of Occupational Aptitude Patterns (OAP's) generated for a sample of mentally retarded and boarderline intelligence students is significantly greater for the Nonreading Aptitude Test Battery (NATB) than for the General Aptitude Test Battery (GATB). (DEP)

Evaluated the extent to which the Graduate Record Examinations General Test measures the same constructs for older test takers that it does for younger examinees. Results suggest that the convergent validity of the test is similar across the age groups, but discriminant validity is somewhat different for older examinees. (Author/RWB)

Compared the Wechsler Intelligence Scale for Children (Revised) and the Woodcock-Johnson Psycho-Educational Battery (W-J) for 142 children with regular and learning-disabled (LD) class placement. The W-J and WISC-R evidenced low to moderate correlations and significant mean differences. W-J/WISC-R correlations for the regular students exceeded…

Normative data for the Advanced Raven's Progressive Matrices are presented based on 300 University of California, Berkeley, students. Correlations with the Wechsler Adult Intelligence Scale and the Terman Concept Mastery Test are explored. The relationship between the Advanced Raven's Progressive Matrices and Spearman's g is explored. (Author)

Administered the Wechsler Intelligence Scale for Children, Wechsler Intelligence Scale for Children-Revised, and Wechsler Preschool Primary Scale of Intelligence in a counterbalanced design to randomly selected elementary school children (N=72). Results indicated that the verbal Intelligence Quotients (IQs) were comparable, but the performance and…

A study evaluated comparatively the Scholastic Reading Inventory (SRI) Interactive Test and Advantage Learning Systems' STAR Reading Computer-Adaptive Standardized Test. Due to the different methods used for collecting and calculating norm-referenced scores in the two tests, scale score measures of reading performance were used for the comparative…

Article relates research done to discover with which characters adolescents form strong identifications; and to learn which characters these youths most admire. (Author)

The importance of the teacher to the success of any individualized teaching method cannot be overemphasized. (Editor)