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Is Education Associated with Improvements in General Cognitive Ability, or in Specific Skills?
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Ritchie, Stuart J.; Bates, Timothy C.; Deary, Ian J. – Developmental Psychology, 2015
Previous research has indicated that education influences cognitive development, but it is unclear what, precisely, is being improved. Here, we tested whether education is associated with cognitive test score improvements via domain-general effects on general cognitive ability ("g"), or via domain-specific effects on particular cognitive…
Descriptors: Cognitive Ability, Cognitive Development, Outcomes of Education, Cognitive Tests
Marital Status and Reproduction: Associations with Childhood Intelligence and Adult Social Class in the Aberdeen Children of the 1950s Study
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von Stumm, Sophie; Batty, G. David; Deary, Ian J. – Intelligence, 2011
Childhood intelligence (age 11) and occupational social status at midlife (age 46 to 51) was associated with marital status and reproduction in a sample from the Aberdeen Children of the 1950s cohort study (N = 9614). Male and female divorcees had lower childhood intelligence test scores than their married counterparts, but no meaningful…
Descriptors: Intelligence, Social Class, Social Status, Marital Status
Childhood IQ and In-Service Mortality in Scottish Army Personnel during World War II
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Corley, Janie; Crang, Jeremy A.; Deary, Ian J. – Intelligence, 2009
The Scottish Mental Survey of 1932 (SMS1932) provides a record of intelligence test scores for almost a complete year-of-birth group of children born in 1921. By linking UK Army personnel records, the Scottish National War Memorial data, and the SMS1932 dataset it was possible to examine the effect of childhood intelligence scores on wartime…
Descriptors: Intelligence Quotient, Intelligence Tests, Scores, Children
IQ, Reaction Time and the Differentiation Hypothesis.
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Der, Geoff; Deary, Ian J. – Intelligence, 2003
Explored the relationship of both simple and four-choice reaction time to scores for the Alice Heim 4 (AH4) test to assess whether correlations previously reported adequately represented the strength of the relationship and to test for departures from linearity. Findings for 900 adolescents and adult show the correlation to be a good summary for…
Descriptors: Adolescents, Adults, Correlation, Intelligence Quotient
Does Mother's IQ Explain the Association between Birth Weight and Cognitive Ability in Childhood?
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Deary, Ian J.; Der, Geoff; Shenkin, Susan D. – Intelligence, 2005
There is a significant association between birth weight and cognitive test scores in childhood, even among individuals born at term and with normal birth weight. The association is not explained by the child's social background. Here we examine whether mother's cognitive ability accounts for the birth weight-cognitive ability association. We…
Descriptors: Cognitive Ability, Mothers, Intelligence Quotient, Children
Intelligence and Inspection Time: Achievements, Prospects, and Problems.
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Deary, Ian J.; Stough, Con – American Psychologist, 1996
Introduces the inspection-time (IT) measure in psychology, and argues that its much-replicated correlation with intelligence quotient (IQ) and its potential for theoretical tractability has more potential for the understanding of individual differences in cognitive ability than other indices of human information processing. It summarizes studies…
Descriptors: Academic Aptitude, Behavioral Science Research, Cognitive Ability, Comparative Analysis