Inspection time and cognitive abilities in twins aged 7 to 17 years: Age-related changes, heritability and genetic covariance
We studied the age-related differences in inspection time and multiple cognitive domains in a group of monozygotic (MZ) and dizygotic (DZ) twins aged 7 to 17 years. Data from 111 twin pairs and 19 singleton siblings were included. We found clear age-related trends towards more efficient visual infor...
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| Veröffentlicht in: | Intelligence (Norwood) 2008-05, Vol.36 (3), p.210-225 |
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| creator | Edmonds, Caroline J. Isaacs, Elizabeth B. Visscher, Peter M. Rogers, Mary Lanigan, Julie Singhal, Atul Lucas, Alan Gringras, Paul Denton, Jane Deary, Ian J. |
| description | We studied the age-related differences in inspection time and multiple cognitive domains in a group of monozygotic (MZ) and dizygotic (DZ) twins aged 7 to 17 years. Data from 111 twin pairs and 19 singleton siblings were included. We found clear age-related trends towards more efficient visual information processing in older participants. There were substantial correlations between inspection time and cognitive abilities. The heritability of inspection time was 45%, and ranged from 73% to 85% for cognitive abilities. There were significant non-shared environmental effects on inspection time and Wechsler IQ scores, but no shared environmental effects. The genetic correlation between inspection time and Performance IQ was 0.55 and with Verbal IQ it was 0.28. There was a significant non-shared environmental correlation of 0.24 between inspection time and Verbal IQ. |
| doi_str_mv | 10.1016/j.intell.2007.05.004 |
| format | Article |
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Data from 111 twin pairs and 19 singleton siblings were included. We found clear age-related trends towards more efficient visual information processing in older participants. There were substantial correlations between inspection time and cognitive abilities. The heritability of inspection time was 45%, and ranged from 73% to 85% for cognitive abilities. There were significant non-shared environmental effects on inspection time and Wechsler IQ scores, but no shared environmental effects. The genetic correlation between inspection time and Performance IQ was 0.55 and with Verbal IQ it was 0.28. 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Data from 111 twin pairs and 19 singleton siblings were included. We found clear age-related trends towards more efficient visual information processing in older participants. There were substantial correlations between inspection time and cognitive abilities. The heritability of inspection time was 45%, and ranged from 73% to 85% for cognitive abilities. There were significant non-shared environmental effects on inspection time and Wechsler IQ scores, but no shared environmental effects. The genetic correlation between inspection time and Performance IQ was 0.55 and with Verbal IQ it was 0.28. 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| ispartof | Intelligence (Norwood), 2008-05, Vol.36 (3), p.210-225 |
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| subjects | Adolescent Age Differences Biological and medical sciences Child Child development Cognition Cognition & reasoning Cognitive Ability Cognitive Processes Correlation Correlation analysis Development Developmental psychology Environmental Influences Fundamental and applied biological sciences. Psychology Genetic covariance Genetics Heritability Inspection Inspection time Intelligence Intelligence Quotient Intelligence Tests Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Siblings Twins Verbal learning Visual Perception |
| title | Inspection time and cognitive abilities in twins aged 7 to 17 years: Age-related changes, heritability and genetic covariance |
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