The authors encourage those in the field of school psychology to consider the use of learning disabilities assessment practices in relation to specific American Psychological Association and National Association of School Psychologists ethical codes and in regard to the American Educational Research Association, American Psychological Association,…

Examined the standard error for short forms of Wechsler's scales with deviant subjects (N=2000). Demonstrated that the standard error of estimate of a short form for the standardization sample is an excellent approximation to the standard error of a predicted IQ for a new, even markedly deviant, subject. (LLL)

Provides tables of critical values for determining statistically significant discrepancies between Wechsler Verbal/Performance IQ and Wechsler Individual Achievement Test subtests and composite scores based on predicted-achievement method. Recommends that tables be used when statistically significant and diagnostically meaningful Verbal…

Presents age-referenced tables for Wechsler Preschool and Primary Scale of Intelligence-Revised that provide differences required at .05 and .01 levels of significance between any Verbal scale subtests and average of Verbal scale subtests, any Performance scale subtests and average of Performance scale subtests, and any subtest with average of all…

Examines the consequences of regarding Deviation Quotients (DQs) as estimates of Full Scale IQs. Offers a new formula and shows the increase in error to be negligible for short forms with typical validities, which supports linear scaling as an acceptable alternative to linear regression. (LLL)

Reports reliability data for Wechsler Subtest comparisons to supplement the data in the Wechsler Intelligence Scale for Children-Revised and Wechsler Adult Intelligence Scale-Revised manuals. Results indicated that the reliabilities of the differences between Wechsler Subtest scores are low enough to warrant the exercise of caution in interpreting…

Examines the life and career of Thelma Gwinn Thurstone. Discusses her career strategies and contributions to psychological testing, intelligence theory, and instruction. Bases article upon Thurstone's publications and a series of personal interviews. (Author/BH)

Provides tables of Wechsler Individual Achievement Test (WIAT) subtests and composite predicted-achievement standard scores based on Wechsler Intelligence Scale for Children-Third Edition (WISC-III) Verbal and Performance intelligence quotients (IQs). Tables allow examiners to determine quickly ability-achievement discrepancies based on WISC-III…

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…

Discusses intelligence tests in relation to theory of cognitive processing which can serve as model for reconceptualizing cognitive functioning. Analyzes what is measured using Wechsler, Kaufman Assessment Battery for Children, Stanford-Binet IV, and McCarthy scales, and reflects on effectiveness. Suggests that Planning, Attention, Simultaneous,…

Considered methods of evaluating the pattern of subtest scores on the Wechsler Adult Intelligence Scale-Revised. The rationale and method for calculating the size of the significant difference between a subtest and the mean of the subtests scores for an individual are described. (JAC)

Discusses the significance of confidence intervals around IQ scores based on a misleading interpretation of the standard error of measurement terms provided in the Wechsler Adult Intelligence Scale-Revised (WAIS-R) manual. Presents standard error values and a table for determining the abnormality of verbal and performance IQ discrepancies.…

Discusses an alternative approach to intelligence tests as a measure of intelligence. The approach is based on three classes of performance dealing with a person's choice of an internal representation for a problem, strategies for manipulating the representation, and abilities to execute elementary information processing steps required by the…

Because many people still believe that specific, identifiable genes dictate the level of human intelligence and that the number/quality of these genes can be evaluated, presents evidence from human genetics (related to nervous system development) to counter this view. Also disputes erroneous assumptions made in "heritability studies" of human…

Examines assumptions and premises of standardized tests of mental ability and reviews extant theories and research on intellectual functioning of children from culturally different backgrounds. Discusses implications of these issues and perspectives for new directions for intellectual assessment for children from culturally different backgrounds.…