Responses to items from an intelligence test may be fast or slow. The research issue dealt with in this paper is whether the intelligence involved in fast correct responses differs in nature from the intelligence involved in slow correct responses. There are two questions related to this issue: 1. Are the processes involved different? 2. Are the…

Dynamic testing is an assessment method in which training is incorporated into the procedure with the aim of gauging cognitive potential. Large individual differences are present in children's ability to profit from training in analogical reasoning. The aim of this experiment was to investigate sources of these differences on a dynamic test of…

Results from a study of 387 healthy old people studied at baseline and four years later in Edinburgh (Scotland) suggest that, those with higher baseline ability, in higher social-class groups, with more education, and those who are younger are relatively protected from a decline in verbal intelligence, measured by an adult reading test, with age.…

Results for 3,340 participants taking a battery of cognitive tests and an analysis of the Spanish standardization of the Wechsler Adult Intelligence Scale-III support the differentiation of intelligence across the range of ability, with WAIS-III results more supportive of the differentiation theory. (SLD)

The law of diminishing returns suggested by C. Spearman (1904) presents a paradoxical conclusion that groups with the largest amount of "g" (general factor of intelligence) should have the greatest intertest correlation among intelligence tests, but, in fact, they have the least. Implications for intelligence theory are discussed. (SLD)

Reviews and evaluates the Flynn Effect (Flynn, 1984, 1987), the existence of massive IQ gains in the United States from 1932 to 1978. Although the acceptance of the Flynn Effect has been too quick, it appears that there is more than just methodological artifact to be explained. (SLD)

Studied the calculating ability used by a low IQ savant to identify prime numbers in two experiments comparing him to control subjects, one involving reaction time and the other involving inspection time. Concludes that this individual uses a complex computational algorithm to identify primes and discusses the apparent contradiction of his low IQ.…

Data on specific cognitive abilities for 86 children ages 6 to 12 from an allelic association study found three DNA markers significantly associated with specific cognitive ability scales after the effects of general intelligence were removed. These preliminary results support the hierarchical model predicted by genetic research. (SLD)

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…

D. K. Detterman and M. H. Daniel's recognition (1989) that intertest correlations for intelligence quotient (IQ) might not be uniform across the range of ability (and age) was anticipated by C. E. Spearman (1904). Detterman and Daniel appear to have rediscovered Spearman's suggested law of diminishing returns. (SLD)

Results of 2 studies involving 503 adults and 229 adolescents show that emotional intelligence, as measured by the Multifactor Emotional Intelligence Scale, a new ability test of emotional intelligence, meets 3 classical criteria of a standard intelligence. (SLD)

This paper examines the relationship between span memory [e.g., immediate memory, short-term memory (STM), simple span] and general ability ("g") though a reanalysis of two data sets [Christal, R. E. (1959). "Factor analytic study of visual memory." "Psychological Monographs: General and Applied," 72 (13, Whole No. 466); Kelley, H.P. (1964).…

Administered a battery of 17 working memory tasks and a test for the Berlin Intelligence Structure Model (1982) to 128 young adults in Germany. General working memory capacity was highly related to general intelligence, and findings also suggest that specific working memory resources, as opposed to a general capacity, are the limiting factors for…

Data for the Raven's Advanced Progressive Matrices test from 3 large studies for a total of 818 adults show that although older adults perform like low-ability young adults when the measure of interest is the number correct, there does not seem to be an age-related difference in the type of reasoning used. (SLD)

The relationship between learning ability and memory-monitoring performance was studied for 289 undergraduates in a 5-stage feeling of knowing (FOK) procedure with confidence of recognition (COR) judgments. Results show that fast and slow learners do not differ in magnitude of FOK and COR. (SLD)