The comprehension of connectives is crucial for understanding the discourse relations that make up a text. We studied connective comprehension in English to investigate whether adult comprehenders acquire the meaning and intended use of connectives to a similar extent and how connective features and individual differences impact connective…

This study addresses the investment hypothesis of fluid on crystallised abilities onto academic achievement (Gf [right arrow] Gc [right arrow] "Achievement"), which might hold to a greater extent at earlier than at latter educational stages. We compared this prediction with two independent groups of secondary (n = 192, 113 females) and…

Cognitive flexibility (CF) is the ability to shift between concepts or rules. Difficulty with CF is associated with autism (i.e., ASD) as it contributes to repetitive behaviours. However, little is known about CF skills of autistic adolescents with low intelligence. This study uses the Wisconsin Card Sorting Task (WCST) to assess the CF of 36…

We conducted a meta-analysis of 31 studies, spanning 30 years, utilizing the WCST in participants with autism. We calculated Cohen's d effect sizes for four measures of performance: sets completed, perseveration, failure-to-maintain-set, and non-perseverative errors. The average weighted effect size ranged from 0.30 to 0.74 for each measure, all…

Analogical reasoning is an important mechanism for social cognition in typically developing children, and recent evidence suggests that some forms of analogical reasoning may be preserved in autism spectrum disorder. An unanswered question is whether children with autism spectrum disorder can apply analogical reasoning to social information. In…

This study examined performance on transitive inference problems in children with developmental dyscalculia (DD), typically developing controls matched on IQ, working memory and reading skills, and in children with outstanding mathematical abilities. Whereas mainstream approaches currently consider DD as a domain-specific deficit, we hypothesized…

The relationship between general knowledge (GK) and cognitive ability (IQ and abstract reasoning), learning approaches, and personality ("big five" traits and typical intellectual engagement) was investigated in a sample of 101 British undergraduates. As predicted, GK was positively correlated with cognitive ability (more so with IQ than…

This study indicated that the school performance and intelligence quotients of associative responders diverge significantly over time from those of nonassociative responders. This divergence becomes greater with age, suggesting that reliance on associative responding in preference to reasoning may cumulatively interfere with intellectual…

WRITTEN COMPOSITIONS WERE OBTAINED FROM 48 CHILDREN, FOUR FROM EACH AGE GROUP FROM EIGHT THROUGH 11, ASSIGNED TO THREE IQ GROUPS--RETARDED, NORMAL, AND SUPERIOR. USING SEVERAL OF THE FLESCH CRITERIA (WHICH USE NUMBER OF SYLLABLES, AVERAGE SENTENCE LENGTH, AND NUMBER OF DEFINITE WORDS AS INDICES), COMPOSITIONS WERE SCORED FOR DEFINITENESS OF STYLE.…

Systematic observations of thousands of high school students in the California Mentally Gifted Minors/Gifted and Talented Education programs identified five principles underlying the development of high level thinking skills in this population: (1) Exceptional performance on any criterion requires mutually reinforcing antecedents, the effects of…

Two studies examined the relation between current developmental levels, as estimated by IQ, and proximal levels of development, as estimated by the efficiency of learning and transfer in assisted contexts. Subjects were 8- to ll-year-old children. Theoretical and clinical implications are discussed. (HOD)

This study evaluated the diagnostic validity of a task measuring abstract categorization ability in learning disabled (LD) and non-LD children. Data showed that the component of abstract category knowledge that best disciminates LD children from non-LD, is the knowledge of how members of abstract categories differ from each other. (Author/JAZ)

Describes the development of a computer-based learning courseware that presented associative learning between abstract and concrete domains and discusses results of a study of college students that determined whether various audio-visual combinations and differences in IQ levels influenced learning and long-term retention using the courseware.…

Examined patterns of intellectual differences among children (n=300) of different ethnic groups on Wechsler Intelligence Scale for Children-Revised. Results indicated that when overall intelligence quotient was held constant, Black children performed better on verbal tasks, Hispanic children performed better on visual-spatial tasks, and White…

Points out the untestability of a heredity explanation for the differences in IQs of Black children and those of White children. Suggests an environmental explanation, arguing that Black children, simply have not had the opportunity to develop their potential for abstract thinking. (HTH)