Comparison of performance of nine groups of mentally retarded subjects (N=236) on the Wechsler Intelligence Scale for Children Scale-Revised (WAIS-R) indicated the WAIS-R produced higher IQs than the WISC-R and that this disparity increased as WISC-R IQ decreased. (Author/DB)

Illustrates kinds of intelligence tests, discussing factors indicating intelligence: genetics, reaction time, latency and amplitude, and variability. Lists the advantages and disadvantages of the intelligence tests mentioned. (CI)

The social quotient from Vineland Social Maturity Scale was found to be moderately associated with IQ as measured by the Stanford Binet, Wechsler Adult Intelligence Scale, Peabody Picture Vocabulary Test, Slosson Intelligence Test, and the Leiter International Test for institutionalized mentally retarded persons. (CL)

A true-false measure concerning the interpretation of intelligence quotients (IQ) is presented. The correct responses to the 10 items, and a brief explanation of each, are also included. The author attempts to reveal many misconceptions about the interpretation of IQ scores. (DWH)

The purpose of this investigation was to develop a short form of the WAIS that would have concurrent validity as well as construct validity. The short form, the "Adaptability" Scale, constructed was significantly related to Full Scale IQ's (construct validity) and to workshop performance (concurrent validity). (Author/CG)

Support presented for the hypothesis that differences in IQ are related to month and season of birth. (RD)

A three-stage model for the evolution of theories of intelligence is proposed and applied to understanding the evolution of correlationally based and experimentally based theories of intelligence. In stage one, alternative conceptions compete. In subsequent stages, alternative conceptions, which combine elements of prior approaches, emerge and…

Examined the assumption that Spearman's law acts unsystematically and approximately uniformly for various subtests of cognitive ability in an IQ test battery when high- and low-ability IQ groups are selected. Data from national standardization samples for Wechsler adult and child IQ tests affirm regularities in Spearman's "Law of Diminishing…

Correlated brain size differences with 37 musculoskeletal variables shown in evolutionary textbooks to change with brain size. Findings from a sample of more than 6,000 U.S. military personnel indicate that racial differences in brain size are securely established and are the most likely biological mediators of race differences in intelligence.…

Investigated whether average Full Scale IQ (FSIQ) differences can be attributed to "g" using the Spanish standardization sample of the Wechsler Adult Intelligence Scale III (WAIS III) (n=703 females and 666 men). Results support the conclusion that WAIS III FSIQ does not directly or exclusively measure "g" across the full range…

Studied the influence of task content and sex on the relationship between intelligence and cortical activation in 26 males and 25 females administered verbal, numerical, and figural versions of an elementary cognitive task. Results suggest comparatively lower cortical activation in more intelligent individuals, but the pattern interacted with sex…

Presents table for determining relative rarity of quotient discrepancies on Wechsler Intelligence Scale for Children-Revised (WISC-R) to be used with children at higher Intelligence Quotient levels. Theoretically derived table has been confirmed through empirical observation of WISC-R standardization sample. Suggests table use should reduce…

The relationship between psychometric intelligence, determined by Raven's Advanced Progressive Matrices, and spatiotemporal patterns of cortical activation, determined by quantifying event-related desynchronization, was studied in 17 college students. Findings support the hypothesis of a more efficient use of the brain in higher IQ individuals.…

Studied whether genetic variability explained some of the variance in coincidence timing and whether common genetic factors accounted for the association with intellectual functioning using 55 pairs of 16-year-old twins. Results suggest that the genetic influence operating on coincidence timing skills was of similar magnitude to that of response…