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Information Processing from Infancy to 11 Years: Continuities and Prediction of IQ
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Rose, Susan A.; Feldman, Judith F.; Jankowski, Jeffery J.; Van Rossem, Ronan – Intelligence, 2012
This study provides the first direct evidence of cognitive continuity for multiple specific information processing abilities from infancy and toddlerhood to pre-adolescence, and provides support for the view that infant abilities form the basis of later childhood abilities. Data from a large sample of children (N = 131) were obtained at five…
Descriptors: Evidence, Structural Equation Models, Intelligence Quotient, Infants
Basic Information Processing Abilities at 11 Years Account for Deficits in IQ Associated with Preterm Birth
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Rose, Susan A.; Feldman, Judith F.; Jankowski, Jeffery J.; Van Rossem, Ronan – Intelligence, 2011
Although it is well established that preterms as a group do poorly relative to their full-term peers on tests of global cognitive functioning, the basis for this relative deficiency is less understood. The present paper examines preterm deficits in core cognitive abilities and determines their role in mediating preterm/full-term differences in IQ.…
Descriptors: Body Weight, Structural Equation Models, Intelligence Quotient, Premature Infants
Intergenerational Class Mobility in Britain: A Comparative Look across Three Generations in the Lothian Birth Cohort 1936
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Wendy Johnson; Caroline E. Brett; Ian J. Deary – Intelligence, 2010
The Lothian Birth Cohort 1936 sample is in a uniquely good position to provide relevant data on social class mobility patterns over most of the last century. These participants, with known ultimate social class attainment, took a validated mental test in the Scottish Mental Survey of 1947 and were followed up at approximately age 70. Then, besides…
Descriptors: Intelligence, Social Class, Structural Equation Models, Psychological Testing
The Phenotypic and Genotypic Relation between Working Memory Speed and Capacity
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Polderman, Tinca J. C.; Stins, John F.; Posthuma, Danielle; Gosso, M. Florencia; Verhulst, Frank C.; Boomsma, Dorret I. – Intelligence, 2006
This study examined the phenotypic and genotypic relationship between working memory speed (WMS) and working memory capacity (WMC) in 12-year-old twins and their siblings (N = 409). To asses WMS all children performed a reaction time task with three memory loads from which a basic mental speed measure and the derived slope were used. WMC was…
Descriptors: Short Term Memory, Children, Twins, Siblings
A Twin Study of Gender-Influenced Individual Differences in General Cognitive Ability.
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Knopik, Valerie S.; Defries, John C. – Intelligence, 1998
To study whether individual differences in general cognitive ability differ in males and females, full-scale IQ data from 426 child twin pairs were fitted to a structural equation model of sex limitation. Individual differences in general cognitive ability appear to be substantially due to common genetic influences in males and females. (SLD)
Descriptors: Biological Influences, Cognitive Ability, Genetics, Individual Differences
Sources of Continuity in Infant Predictors of Later IQ.
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Cardon, Lon R.; Fulker, David W. – Intelligence, 1991
Sources of continuity among nine measures of infant cognitive processing and later childhood intelligence quotient were examined through developmental structural equation models applied to a sample of 208 twin pairs measured from 7 to 36 months. Skills assessed appear related to general cognitive ability in a relatively unstable manner. (SLD)
Descriptors: Child Development, Cognitive Ability, Cognitive Processes, Cognitive Tests