Confidence intervals for the 80, 85, 90, and 95 percent levels of confidence are presented for the Peabody Picture Vocabulary Test-Revised (PPVT-R) using the estimated true score and obtained score based methods. Separate tables are provided for ages 2-1/2 to 18 and ages 19 and above. (Author/VW)

WISC-III scores of 233 students (ages 9 to 13) with mental retardation were examined. Boys had higher Full Scale, Verbal, and Performance IQs than did girls. Boys also had higher scores on six of the 10 subtests. In addition, all of the statistically significant differences were in favor of boys. (Author/CR)

The Cognitive Levels Test, for use with ages 5-21, is designed as a quick cognitive assessment instrument with 4 subdomains: verbal reasoning, abstract reasoning, quantitative reasoning, and memory. This paper describes the test's administration, summation of data, standardization, reliability, and validity. (JDD)

The Stanford Binet Intelligence Scale measures four areas of cognitive abilities (verbal reasoning, abstract/visual reasoning, quantitative reasoning, and short-term memory), providing a continuous scale for appraising cognitive development from age two to adult. This paper describes the test's administration, standardization, reliability, and…

Factor analysis performed on the Wechsler Intelligence Scale for Children-Revised (WISC-R) for 252 subjects (ages 6-16), who were mentally handicapped, slow learners, or learning disabled, identified 3 factors: verbal-conceptual, perceptual-spatial, and distractibility-short-term memory. Findings suggest that the factor example can be used to…