期刊
DEVELOPMENTAL SCIENCE
卷 9, 期 2, 页码 F22-F31出版社
WILEY
DOI: 10.1111/j.1467-7687.2006.00469.x
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资金
- MRC [G0500079] Funding Source: UKRI
- Medical Research Council [G0500079, G9817803B] Funding Source: researchfish
This longitudinal monozygotic (MZ) twin differences study explored associations between birthweight and early family environment and teacher-rated behaviour problems and academic achievement at age 7. MZ differences in anxiety, hyperactivity, conduct problems, peer problems and academic achievement correlated significantly with MZ differences in birthweight and early family environment, showing effect sizes of up to 2%. As predicted by earlier research, associations increased at the extremes of discordance, even in a longitudinal, cross-rater design, with effect sizes reaching as high as 12%. As with previous research some of these nonshared environmental (NSE) relationships appeared to operate partly as a function of SES, family chaos and maternal depression. Higher-risk families generally showed stronger negative associations.
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