Individual differences in digit span, susceptibility to proactive interference, and various aptitude/achievement test scores were investigated in two experiments with college students. Results indicated that digit span was strongly correlated with aptitude/achievement scores, but did not indicate that susceptibility to proactive interference…

In two six-month longitudinal studies of intellectually advanced preschool children, letter naming time and background digit span were moderately good predictors of concurrent reading achievement, while no other standard cognitive indices, including mental age, were associated with reading achievement. Both memory span and retrieval were related…

Mildly retarded children were instructed in encoding strategies or rehearsal strategy. Performance was higher for semantic encoding strategies. Seven months later the semantic condition also showed greater improvement after strategies were prompted. Performance on incidental learning tasks was enhanced for 13- but not 10-year olds. (Author/RD)

Two meta-analyses, one with 27,973 subjects in 31 studies and one with 34,262 subjects in 141 studies, found that tests of short-term memory are valid predictors of job and training performance and that racial differences are smaller than is usual on cognitive tests. (SLD)

Meta-analysis of 225 hypothesis tests of measures of memory for order (MFO) and the relationship of MFO and measures of general ability demonstrate a significant relationship between MFO and standardized test scores. Fifty-one independent samples were tested. MFO task quality was a significant predictor of effect size. (SLD)

The genetic relationship between intelligence and components of cognition remains controversial. Conflicting results may be a function of the limited number of methods used in experimental evaluation. The current study is the first to use CANTAB (The Cambridge Neuropsychological Test Automated Battery). This is a battery of validated computerised…

This study is based on three distinct elementary cognitive tasks using chronometric techniques: (1) the S. Sternberg memory scan task, (2) a visual scan task; and (3) the Hick paradigm. Certain parameters of the tasks are compared experimentally and correlationally. Subjects were 48 university students, tested and retested on the tasks in a…

The effectiveness of a measure of the processing capacity of working memory, called the reading span test, is demonstrated in predicting performance and understanding individual differences in reading comprehension. (Author/PN)

Several measures of the speed of information processing were related to ability factors derived from the Cattell-Horn theory of fluid and crystallized intelligence. Correlations among the ability measures, among the information processing measures, and between the two domains were analyzed using confirmatory factor analysis. (Author/PN)

Asian-American, White, and Black Children in grades 2-6 were tested for intelligence, achievement, and short-term memory. Factor analysis yielded two main factors: memory and general intelligence. The three groups differed distinctly at every grade level. Achievement correlated more with memory than with general intelligence. (Author/CP)

The effects of controlling for individual differences in simple reaction time (RT) on the correlations of choice RT and discrimination RT with intelligence quotient were studied for 213 male college students. Simple RT was controlled by subtraction, partial correlation, and multiple correlation. (SLD)

Models of working memory were compared in 2 experiments as means of explaining variance in the comprehension of 95 skilled and 80 learning-disabled readers from grades 4 through 7. Results suggest that learning-disabled children's working memory problems are functionally related to higher order processes and not memory alone. (SLD)

This study investigated the relationship between measures of speed of cognitive information processing and intelligence test scores. Cognitive processing measures were significantly related to IQ scores. Reaction time tests measure cognitive operations basic to intelligence, and individual differences in intelligence are partly due to variability…

The general intelligence factor (g) was investigated using 170 university students across three batteries of ability measures: (1) a short-term memory battery; (2) the Multidimensional Aptitude Battery; and (3) a reaction time battery. Results support the notion of g and suggest short-term memory as an essential aspect of intelligence. (SLD)

The predictive validity and utility of assessment procedures can be increased by adding predictors to the prediction supplied by general ability tests. Of Jensen's early work comes the suggestion of focusing on the cognitive ability short-term memory (STM), especially for low-"g" Black children. Meta-analysis convincingly shows high…