Provides new confidence intervals for Wechsler Intelligence Scale for Children-Revised (WISC-R) to improve accuracy over existing tables. Includes alternative confidence interval tables for WISC-R quotients at extreme levels where current tables are least accurate. New tables center confidence intervals on estimated true intelligence quotient and…

The simplicity of standard score systems, percentile equivalents, and their relation to the ideal normal distribution are discussed and illustrated. Standard scores are z-scores, the T-scores, College Entrance Examination Board scores, and Army General Classification Test scores. A derivative of the general standard score system is the stanine…

Investigated Kaufman's procedures for determining intersubtest scatter on the Wechsler Intelligence Scale for Children-Revised by means of Sattler's revised tables for determining significant subtest fluctuations. Results indicated that Sattler's revised tables yielded more conservative estimates of subtest scatter than those originally reported…

In a rebuttal to w. Graves, who associated faulty research design and statistical regression with IQ drop of 19 kindergarten Children in a study of J. Jacobs, Jacobs states that he used a statistical correction for the regression effect and that the significant decrease in measured intellectual ability remained. (MC)

The completed WISC-R's (Wechsler Intelligence Scale for Children-Revised) of 76 white urban children with academic problems (6 years, 0 months to 15 years, 9 months) were rescored utilizing the Satz and Mogel criteria for an abbreviated intelligence measure. Extremely high correlations for IQ's (.96 - .98) and subtests (.66 - .95) were found.…

Presents four tables for the statistical interpretation of factor scores on the Wechsler Intelligence Scale for Children-Revised. Provides the percentile equivalents of factor scores; the significance of differences between factor scores; the frequency with which specified discrepancies occur; the significance of differences between a factor score…

Reanalysis of Wakefield and Carlson's data confirmed canonical correlations of .84 and .69, but analysis of redundancies revealed that only 34 percent of the total WISC subtest variance is redundant with the ITPA and 39 percent of the ITPA subtest variance is redundant with the WISC. (Author)

Computed confidence intervals for the Wechsler Adult Intelligence Scale-Revised for the Verbal, Performance, and Full Scale IQ scores. Reports IQ intervals for the 85 percent, 90 percent, 95 percent, and 99 percent levels of confidence for each of the nine standardization sample age groups and the entire sample. (Author)

Three tests of intellectual performance capacity referring to factors V, S, and R, according to Thurstone's system of primary mental abilities were administered to a total number of 34 subjects. Immediately after finishing an individual item, subjects were asked to estimate the perceived difficulty of that item. The ratings were to be given on a…

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)

Samples in research on individual and group differences may be selected based on whole scores which differ from the population mean. Children are diagnosed in clinical practice with a whole score. These procedures produce regression to the population mean which can affect accuracy and adequacy of part score interpretations. (Author/DWH)

Interrater differences in scoring actual WISC protocols were determined for three different IQ levels. In general, differences among the 94 examiners tended to be within an acceptable range as established by the standard error of measurement; variance on two Verbal subtests occasionally exceeded their corresponding standard error of measurement.…

A battery of 10 intelligence tests was administered to 22 subjects under standard conditions. After the testing session the degree of perceived similarity between 5 tests of the battery was to be estimated with regard to: (1) the kind of intellectual activity required by the tests, and (b) difficulty. Estimated qualitative similarity, according to…

A verbal comprehension deviation quotient and a perceptual organization deviation quotient are presented as alternatives to the Verbal and Performance IQs when attempting to measure the Wechsler Intelligence Scale for Children-Revised verbal comprehension and perceptual organization factors. The freedom from distractibility deviation quotient…