Inspection time and cognitive abilities in twins aged 7 to 17 years: Age-related changes, heritability and genetic covariance

被引：25

作者：

Edmonds, Caroline J. ^{[1
]}

Isaacs, Elizabeth B. ^{[1
]}

Visscher, Peter M. ^{[4
]}

Rogers, Mary ^{[1
]}

Lanigan, Julie ^{[1
]}

Singhal, Atul ^{[1
]}

Lucas, Alan ^{[1
]}

Gringras, Paul ^{[3
]}

Denton, Jane ^{[2
]}

Deary, Ian J. ^{[5
]}

机构：

[1] UCL, Inst Child Hlth, MRC Childhood Nutr Res Ctr, London WC1N 1EH, England

[2] Queen Charlottes & Chelsea Hosp, Multiple Birth Fdn, London W12 0HS, England

[3] St Thomas Hosp, Evelina Childrens Hosp, London SE1 7EH, England

[4] Univ Edinburgh, Sch Biol Sci, Inst Evolutionary Biol, Ashworth Labs, Edinburgh EH9 3JF, Midlothian, Scotland

[5] Univ Edinburgh, Dept Psychol, Edinburgh EH8 9JZ, Midlothian, Scotland

来源：

INTELLIGENCE | 2008年 / 36卷 / 03期

基金：

英国医学研究理事会;

关键词：

inspection time; cognition; twins; development; heritability; genetic covariance;

D O I：

10.1016/j.intell.2007.05.004

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

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. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：210 / 225

页数：16

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