Birthweight-discordance and differences in early parenting relate to monozygotic twin differences in behaviour problems and academic achievement at age 7

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...

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Bibliographic Details
Published in:Developmental science 2006-03, Vol.9 (2), p.F22-F31
Main Authors: Asbury, Kathryn, Dunn, Judith F., Plomin, Robert
Format: Article
Language:English
Subjects:
Academic Achievement
Anxiety
Anxiety Disorders
At Risk Persons
Attention Deficit Disorder with Hyperactivity
Behavior disorders
Behavior Problems
Birth Weight
Body Weight
Child
Child Behavior
Child Behavior Disorders - genetics
Child Development
Child, Preschool
Conduct Disorder
Correlation
Depression (Psychology)
Educational Status
Effect Size
Elementary school students
Environment
Family Environment
Female
Humans
Hyperactivity
Longitudinal Studies
Male
Parent Influence
Parenting
Parents & parenting
Peer Group
Peer Relationship
Predictor Variables
Risk Factors
Student Behavior
Students
Twins
Twins, Monozygotic
Young Children
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Summary: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.
ISSN:1363-755X
1467-7687
DOI:10.1111/j.1467-7687.2006.00469.x