In the investigation described here, the relationship between individual differences of intelligence, as measured by the Wechsler Adult Intelligence Scale (WAIS; Wechsler, 1958), and inspection time has been examined. (Author)

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 usefulness of the Peabody Individual Achievement Test General Information subtest as a general screening instrument with non-retarded subjects is shown in a study of concurrent validity between the subtest and the Wechsler Intelligence Scale for Children-Revised. Correlations between the instruments in two intelligence groups are discussed.…

A study of 18 Down Syndrome and 18 other mentally retarded adults found evidence of a significant erosion of Wechsler Intelligence Scale for Children scores from the third to fourth decades of life. The Block Design subtest was especially vulnerable to performance decline with age in the Down Syndrome adults. (Author/JDD)

Examined was the relationship between length of institutionalization and IQ change in 46 school-aged, socially deprived, retarded girls. (Author)

Persons representing the extremes of intelligence cannot be included in the same study unless they are approximately equated on mental age, in which case the relative performances of the extreme groups can provide useful information about the nature of intelligence. (Author/RD)

Mentally retarded individuals have more difficulty dealing with strategic games and puzzles than other tasks. Games have been played since ancient times and throughout the world, with performance indicating wisdom. Games invariably express certain universal intellectual traits. Mancala and Three in a Row games are briefly described. (Author/RD)

Disparities between European countries and the U.S. in terms of incidence and prevalence of mild mental retardation have become apparent. A model of intellectual performance that might explain disparities and predict future levels of occurrence of mild mental retardation is presented. Such explanations are relevant for theory and policy decisions.…

Reviews 50 years of research investigating the relationship between intelligence and various aspects of occupational and vocational adjustment as they relate to both exceptional and nonexceptional individuals. Trends in this research are identified and summarized, and implications for counselors involved in vocational programming are discussed.…

This book is organized in nine parts, as follows. Part I, "Preface," includes an account of how the author went from the rather esoteric research on theoretical problems in serial rote learning to research on the inheritance of mental abilities and its implications for education. Part II, "How Much Can We Boost IQ and Scholastic Achievement?," is…

This research is, in part, a study of a method of differentiating between two different types of retardation (the exogenous or brain injured and the endogenous or non-brain injured). However, this paper is also an example of the evaluation of a research problem, for it incorporates data and information from three different studies, each of which…

Two studies (N=4,261 persons) illustrate an inverse relationship between ability level and correlations among IQ measures. Low IQ subjects showed higher correlations than did high IQ subjects. Intercorrelations of IQ subtests, intercorrelations of cognitive ability measures, and correlations of IQ with measures of cognitive ability displayed the…

This extensively annotated bibliography supplements an article by Zana Stein and Mervyn Susser entitled "Mutability of Intelligence and Epidemiology of Mild Mental Retardation," appearing in "Review of Educational Research," Volume 40, Number 1, February 1970, pages 29-67. Resource materials listed focus on: the fate of…