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Dodonov, Yury S.; Dodonova, Yulia A. – Intelligence, 2012
In the present study, speeded tasks with differing assumed difficulties of the trials are regarded as a special class of simple cognitive tasks. Exploratory latent growth modeling with data-driven shape of a growth curve and nonlinear structured latent curve modeling with predetermined monotonically increasing functions were used to analyze…
Descriptors: Intelligence, Intervals, Reaction Time, Cognitive Ability
Johnson, Wendy; Deary, Ian J. – Intelligence, 2011
The idea that information processing speed is related to cognitive ability has a long history. Much evidence has been amassed in its support, with respect to both individual differences in general intelligence and developmental trajectories. Two so-called elementary cognitive tasks, reaction time and inspection time, have been used to compile this…
Descriptors: Intelligence, Reaction Time, Cognitive Processes, Cognitive Ability
Ivie, Jennifer L.; Embretson, Susan E. – Intelligence, 2010
Spatial ability tasks appear on many intelligence and aptitude tests. Although the construct validity of spatial ability tests has often been studied through traditional correlational methods, such as factor analysis, less is known about the cognitive processes involved in solving test items. This study examines the cognitive processes involved in…
Descriptors: Spatial Ability, Cognitive Processes, Test Items, Construct Validity
Ratcliff, Roger; Schmiedek, Florian; McKoon, Gail – Intelligence, 2008
The worst performance rule for cognitive tasks [Coyle, T.R. (2003). IQ, the worst performance rule, and Spearman's law: A reanalysis and extension. "Intelligence," 31, 567-587] in which reaction time is measured is the result that IQ scores correlate better with longer (i.e., 0.7 and 0.9 quantile) reaction times than shorter (i.e., 0.1 and 0.3…
Descriptors: Reaction Time, Intelligence Quotient, Correlation, Models
Schweizer, Karl – Intelligence, 2007
The impurity of measures is considered as cause of erroneous interpretations of observed relationships. This paper concentrates on impurity with respect to the relationship between working memory and fluid intelligence. The means for the identification of impurity was the fixed-links model, which enabled the decomposition of variance into…
Descriptors: Intelligence, Intelligence Tests, Tests, Memory

Miller, Linda T.; Vernon, Philip A. – Intelligence, 1996
Whether results previously found in adults, demonstrating a relationship between intellectual ability, speed of information processing, and memory capacity could be found in young children was studied with 109 children. Findings suggest that children's intelligence cannot be explained using a model of adult intelligence. (SLD)
Descriptors: Adults, Child Development, Intelligence, Intelligence Tests

Anderson, Britt – Intelligence, 1994
Using a simple neural model comprising between two and four neurons, it is concluded that speed of neuron conduction is not the probable basis of the intelligence quotient (IQ)-reaction time (RT) correlation. This result illustrates that neural modeling can be applied to biological theories of individual differences in intelligence. (SLD)
Descriptors: Biology, Correlation, Individual Differences, Intelligence

Barrett, P.; And Others – Intelligence, 1986
Two samples of adult subjects of reasonably average intelligence were given IQ tests and a series of reaction time tests using 0, 1, 2, and 3 lists of information in a Hick paradigm. (Author/LMO)
Descriptors: Adults, Analysis of Variance, Correlation, Intelligence Quotient
Beauchamp, Chris M.; Stelmack, Robert M. – Intelligence, 2006
The relation between intelligence and speed of auditory discrimination was investigated during an auditory oddball task with backward masking. In target discrimination conditions that varied in the interval between the target and the masking stimuli and in the tonal frequency of the target and masking stimuli, higher ability participants (HA)…
Descriptors: Cognitive Ability, Auditory Discrimination, Intelligence, Auditory Stimuli

Egan, Dennis E. – Intelligence, 1981
Subjects judged whether aerial views would be seen by an observer oriented in various ways. For practiced subjects, time to answer was an approximately linear function of number of abstract spatial dimensions on which aerial view and observer's orientation were consistent. Ability correlated with linearity of response-time. (Author/RD)
Descriptors: Adults, Cognitive Processes, Cognitive Tests, Individual Differences

Vernon, Philip A.; Mori, Monica – Intelligence, 1992
In 2 studies with 85 and 88 undergraduates, respectively, peripheral nerve conduction velocity (NCV) was significantly correlated with IQ score and reaction times, and NCV and reaction time contributed significantly, in combination, to prediction of IQ. Results are interpreted in terms of a neural efficiency model of intelligence. (Author/SLD)
Descriptors: Cognitive Processes, Correlation, Higher Education, Intelligence

Jensen, Arthur R.; Vernon, Philip A. – Intelligence, 1986
Longstreth's critique of Jensen's research on the relationship of IQ to individual differences in visual reaction time (RT), measured in the Hick paradigm, is said to have numerous errors of fact and interpretation, some trivial and some of theoretical importance. (Author/LMO)
Descriptors: Individual Differences, Intelligence Quotient, Meta Analysis, Models

Cerella, John; And Others – Intelligence, 1986
Measures of verbal intelligence and abstract reasoning were taken on a group of 31 college-aged and 32 elderly adults, together with mental-processing rates associated with choice reaction time, primary memory scanning, and lexical decoding. Group means showed that verbal IQ and lexical decoding were intact in the elderly subjects. (Author/LMO)
Descriptors: Cognitive Processes, College Students, Encoding (Psychology), Higher Education

Egan, Vincent; Deary, Ian J. – Intelligence, 1992
To assess whether movement artifacts reported in visual inspection time (IT) tasks were under metacognitive control, 29 young adults in Edinburgh (Scotland) were tested on a dual-task paradigm in which IT was conducted along with a concurrent task. Reports of movement artifacts are not usually examples of metacognitive processing. (SLD)
Descriptors: Algorithms, Foreign Countries, Intelligence Quotient, Metacognition