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…

Studied sex differences in general intelligence in 10,475 adults taking cognitive test batteries. Results suggest a negligible difference in general intelligence, a finding consistent with findings from quite different test batteries and subject samples. (SLD)

Given well-known difficulties in justifying the Galtonian conception of intelligence as innate general intellectual capacity, a historical explanation is required of why this problematic notion became so prominent in Britain and in the USA in the late nineteenth and twentieth centuries. Parallels are drawn between it and various features of the…

Because figural reasoning tasks are often assumed to indicate fluid intelligence (gf), we investigated which aspect of figural reasoning tasks make that they tend to mark gf-the figural content itself or the high degree of abstraction in these tasks. To this end, the assessment of figural reasoning abilities by means of concrete figural task…

An examinee-level (or conditional) reliability is proposed for use in both classical test theory (CTT) and item response theory (IRT). The well-known group-level reliability is shown to be the average of conditional reliabilities of examinees in a group or a population. This relationship is similar to the known relationship between the square of…

Recent data from 12 pairs of tests representing eight standardization samples show that American IQ gains have occurred at a rate of 0.308 points per year from 1972 to 2002. Linked with earlier IQ gains, Americans have gained about 22 points over the 70 years between 1932 and 2002. Comparing the new WISC-IV (2002) and the old WISC-III (1989) shows…

Mackintosh and Bennett [Mackintosh, N. J., Bennett, E. S. (2005). What do Raven's Matrices measure? An analysis in terms of sex differences. "Intelligence, 33," 663-674] reported that male students obtained higher scores than females on Raven's items that required for their solution addition/subtraction or distribution of two rules, but…

Spearman's "law of diminishing returns" or SLODR refers to a decrease in "g" saturation as ability level increases. SLODR has been demonstrated in a number of intellectual batteries but several important aspects of the phenomenon are not yet well understood. We investigated the presence of SLODR in the Kaufman Assessment…

Institutions of higher education are required to initiate student outcomes assessment programs. Such programs are more complex in Bible colleges due to concerns related to spiritual and religious development and the lack of appropriate related assessment tools. Further, as there are indications that religious development may result in increased…

A set of 5 reaction time tests of increasing cognitive complexity were administered to 35 secondary school pupils in Zimbabwe and The Netherlands at 4 consecutive school days in order to explore the existence and nature of cross-cultural differences on reaction time tests measuring basic cognitive operations. No cross-cultural differences were…

The present study, based on the work of Dweck (2000) and her description of helpless and mastery-orientated children, was designed to find a new, simple and economic way of assessing helplessness while testing a child's intelligence. Two hundred and thirty-two Austrian grammar-school children, previously classified as either helpless or…

Although the field of gifted education generally recognizes the foundational work of Lewis Terman, rarely does one stop to examine the details of his longitudinal study and their connection to present-day gifted education. This article reexamines the beginnings of Terman's longitudinal study with a focus on elementary-school-aged children.…

Mental retardation (MR) has traditionally been defined as a disorder in intellectual and adaptive functioning beginning in the developmental period. Guided by a federal definition of MR described in the Individuals with Disabilities Education Act, it is the responsibility of each of the United States to describe eligibility guidelines for special…

This research investigates the effectiveness of the Instrumental Enrichment Approach on the enhancement of the reading comprehension skills of learners with English Language Learning Difficulties. It aims at identifying the reading comprehension skills required for preparatory stage English language learners, re-develop and teach sample materials…

In this article, the authors review the Wechsler Intelligence Scale for Children-Fourth Edition Spanish (WISC-IV Spanish), a Spanish translation and adaptation of the WISC-IV. The test was developed to measure the intellectual ability of Spanish-speaking children in the United States ages 6 years, 0 months, through 16 years, 11 months. These…